Cadillac Cadillac 1973 Shop Manual Download Page 99

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Summary of Contents for Cadillac 1973

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Page 2: ... warnings against the use o f specific service methods that can damage the vehicle or render it unsafe are stated in this service manual It is also important t o understand these warnings are not exhaustive Cadillac could not possibly know evaluate and advise the service trade of all conceivable ways i n which service might be done or of the possible hazardous consequences of each way Consequently...

Page 3: ...ons and specifications contained in this manual are based on the latest product information available at the time of publication approval The right is reserved to make changes at any time without notice Service Department CADILLAC MOTOR CAR DIVISION General Motors Corporation Detroit Michigan 48232 Printed in U S A 9 72 General Motors Corporation 1972 Part No 109 9635 SECTION NO P 1 mi Cruise Cont...

Page 4: ...t of my ability and in all my dealings with Cadillac owners to be cour teous honest and ethical and to do everything within my power to further the owner s satisfaction and promote his good will to Caaillac and to my dealer The Cadillac Certified Craftsman s League is a program sponsored by Cadillac Motor Car Division for the benefit of authorized dealer s service departments Participation in the ...

Page 5: ...edures An illustrated list of special tools a torque requirement chart and specifications are provided at the end of each section Service information pertaining only to those features that are exclusive to the Eldorado is provided at the back of the individual sections in the manual For Eldorado service procedures and recommendations not listed refer to the forward part of the appropriate section ...

Page 6: ... COWL BAR IN THE LOWER LEFT HAND CORNER OF THE WINDSHIELD VEHICLE IDt NTIf ICATION NUMRtR DERIVATIVE LOCATED O N LEFT SlDE OF TRANSMISSION CASE EXCEPT 6L A C COMPRESSOR SERIAL NUMBER LABEL LOCATED O N REAR PORTION OF COMPRESSOR HOUSING TURBO HYDKA MATlC TRANSMIS SION UNlT NUMBER PLATE LOCAT ED ON LEFT S DE OF COlvVERTER hOUSlNG VEH C E IDElvTIFICATION NUMBER DERIVATIVE LOCATED ON VERTICAL SUPPORT ...

Page 7: ...tion numbers on various units are shown in Fig 0 1 The identification number on the unit should always appear on product report forms sent to the Central Office such as PIR s Claim Tags Pre I Delivery Reports and when required on Warranty I Claims The 13 digit Vehicle Identification Number is necessary when reporting product information on any vehicle t Body Name Plate A body name plate Fig 0 2 is...

Page 8: ...d must contact only those parts of the frame indicated Overall Height Inches 55 5 54 6 54 1 54 6 54 1 53 9 54 3 57 8 57 7 Sedan Fleetwood Seventy Five Limousine Commercial Chassis 6290 NOTE Certain cars are equipped at these loca tions with special brackets used for rail shipment If such a situation is encountered be sure to engage bracket fully rather than at the edges 151 5 151 5 157 5 WEIGHT 49...

Page 9: ...ND LUBRICATION 0 5 5FRONT WHEELS FRONT BOTTOM CORNER OF DOOR ON CLEARANCE 7 90 Fig 0 4 Lifting Locations Except Eldorado and Commercial Chassis Fig 0 5 Front Hoist Saddle Position Eldorado Fig 0 6 Rear Hoist Saddle Position Eldorado W ...

Page 10: ...tion hoist adapter tabs in raised position to If a drive on hoist is used be sure the center line obtain maximum possible height between frame and relationship as stated above is also applied Fig 0 7 hoist When supporting the Eldorado with a floor jack or Be sure to position tabs in exact locations jack stands the supports should be placed at the sus shown in the shaded areas of Fig 0 7 and make t...

Page 11: ...tes 17and 34 2 Engine a Engine Oil Recommendations The original factory fill oil will perform satisfactorily during the normal change interval specified on the Engine Oil Change Interval and Viscosity Chart Page 0 21 because this oil meets the specifications for service SE The same chart should also be consulted for factory recommendations if additional oil should be necessary prior to the normal ...

Page 12: ...y be necessary if the car is constantlv driven in dustv areas A visual ins ection of the element is recommended periodically to make cer tain that it is properly seated and that there is no indica tion of dust leakage If dirt or damage is indicated at time of visual inspection the element should be changed To replace element proceed as follows I Remove cover from carburetor air cleaner 2 Remove el...

Page 13: ...rectly installed Operational function should be checked as described in Section 6 Note 79 b Choke Choke mechanism should be checked for free opera tion after four months or 6 000 miles whichever comes first and at 12 month 12 000 mile intervals thereafter A binding condition may have developed from gum for mation on the choke shaft or from damage Choke shafts can usually be cleaned without disasse...

Page 14: ...iving in dusty conditions Extensive idling Trailer towing Short trip operation at freezing temperatures engine not thoroughly warmed up Cleaning of the crankcase ventilating breather is important in order to provide proper crankcase breathing The breather is located on the left rocker arm cover The filtering material in the unit must be cleaned with solvent at every oil filter change Do oil the fi...

Page 15: ...sealing surface Check travel of service brake pedal and the parking brake pedal every 4 months never to exceed 6 000 miles Excessive brake pedal travel is an indication of the air in the fluid or some other brake system malfunction Service brake pedal travel should not exceed 1 314 inch during normal brake pedal application of approxi mately 30 pounds force 2 on Eldorado The parking brake pedal sh...

Page 16: ...ssion bottom pan should be drained gade lithium soap grease every 100 000 miles and fresh fluid added to obtain the proper level on the dipstick For cars subjected to heavy city driving or in commercial use where the engine is regularly idled for prolonged periods or for trailer towing the bottom pan should be drained every 50 000 miles 1 Remove dipstick from filler tube and insert a length of hos...

Page 17: ... shaft seals and at the pan gasket and check lubricant level only if leakage is evident The factory recommended fluid for the final drive assembly is either SAE 80 or SAE 90 GL5 multi purpose type gear lubricant conforming to MIL L 2105 B specifications For vehicles normally operated in Canada SAE 80 GL 5 gear lubricant is recommended When removing the filler plug take extreme care not to allow an...

Page 18: ...ries a Car Speed Sensitive Most vibration complaints will be found to be car speed sensitive i e the frequency of the excitation depends only on the speed of the vehicle To determine if a given problem is car speed sensitive 1 Drive the car in Drive Left and record the car speed and the engine RPM at which the problem occurs 2 Shift the car into Drive Right and again record the car speed and the e...

Page 19: ...idered as car speed sensitive only NOTE Vibration appraisal on the hoist should be performed on car speed sensitive problems only Analysis of torque sensitive problems on stands will very often lead to erroneous conclusions due to the fact that no appreciable torque is transmitted when the vehicle s tires are not touching the pavement CAUTION This procedure should never be attempted on the drive f...

Page 20: ...be performed and any irregularities corrected before proceeding f Power plant bending as excited by 4th Order Engine 1 Loosen the top four bolts which attach the trans mission to the engine and reappraise the problem If this is the actual cause of the complaint the problem should now occur at a much lower engine speed than it did originally or be completely eliminated Retorque bolts before proceed...

Page 21: ...n neutral and pour engine oil into carbure tor After about a pint has been added pour oil fast enough to stall engine 4 Be sure parking brake is in released position and car is on level surface 5 Drain gasoline from fuel tank 6 Disconnect all fuel lines blow out and re connect 7 Remove carburetor clean thoroughly and store in plastic bag 8 Remove fuel pump clean and store with car buretor Remove f...

Page 22: ...erating conditions Check brake fluid level Check power steering fluid level Check battery electrolyte level Check transmission fluid level Check axle fluid level Check windshield washer fluid level Check coolant level in overflow reservoir Lubricate accelerator linkage Lubricate door hinges Lubricate transmission shift linkage Lubricate fuel filler door hinge Wipe off any accumulation of dirt or c...

Page 23: ... folding seat back Doors must be closed on power door lock equipped cars Check rearview mirrors and sun visors to insure that friction joints are properly ad justed so mirrors and sun visors stay in the selected position Check door latches for positive closing latching and locking Check to make sure hood closes firmly by lifting on the hood after each closing Check also for broken damaged or missi...

Page 24: ...peller shaft wheels brake drums and disc brake components Inspect cooling system wash radiator cap and filler neck and pressure test cap and system Tighten hose clamps as necessary Clean exterior of radiator core and A C condenser Clean repack and adjust wheel bearings Check final drive boots and output shaft seals Eldorado only Replace air cleaner element Clean and oil clock Replace positive cran...

Page 25: ...AE Viscosity Number Imperial Measure 3 114 Quarts 4 114 Quarts 4 114 Quarts 5 Quarts 18 114Quarts 18 Quarts 20 314 Quarts 4 Pounds 5 114Pounds 8 314 Ounces 11 1 4 Ounces 4 112 Pints 3 113 Pints 23 Gallons Approx 10 Quarts 6 314 Pints 10 314 Quarts 9 112 Pints All Series Unless Otherwise Noted Engine Oil All Except Eldorado Eldorado Only When Filter is Changed All Except Eldorado Eldorado Only Cool...

Page 26: ...luid Part Number 5464831 or brake fluids conforming to SAE 5 1703 Specifications SAE 70 R3 may also be used SAE 80 or SAE 90 GL 5 gear lubricant conforming to MIL L 2105 B specifications For vehicles normally operated in Canada use SAE 80 GL 5 gear lubricant Special rear axle lubricant Part Number 1050189 or its equivalent Special power steering fluid Part Number 1050017 or its equivalent Special ...

Page 27: ...rigeration System Automatic Temperature Control System Vacuum Circuit Diagram Electrical Circuit Diagram SERVICE INFORMATION FRONT A C ALL SERIES Removal and Installation Procedures Component Overhaul Procedures Compressor ATC Programmer Standard Service Procedures Handling Refrigerant and Refrigerant Components Maintenance and Inspection Checking Refrigerant Charge Purging Evacuating and Charging...

Page 28: ... AUTO position with changes in discharge temperatures and blower speeds 3 The DEF lever setting provides fixed high blower air from the defroster outlets and a bleed out the heater outlet Otherwise it operates similar to HI in that the air temperature varies depending on the position of the programmer and blower speed remains at futed high To diagnose an air conditioner problem in the HEATER TURN ...

Page 29: ...No A C compressor operation out change in discharge air temperature This would indicate the programmer is operating without moving the temperature air door Check the air mix door link to programmer connection c If neither the program events nor the discharge air temperature change a faulty vacuum or electrical signal to the programmer or a programmer malfunction is indicated d Failure of a specifi...

Page 30: ...eating A poor sensor connection adds resistance to the sensor string driving the system hotter An open amplifier power feed eliminates the output signal and drives the programmer to maximum heating a A disconnected transducer lead drives the pro grammer to maximum heating 9 A disconnected vacuum hose supplying the vacuum checking relay actuating nipple will lock the relay in an intermediate positi...

Page 31: ...back out terminal in the 3 way connector located under the instrument panel on the R H side of car near the programmer If the programmer did not move when the control was put to Vent the problem lies in one of the following areas 1 Disconnected or defective temperature dial 2 Disconnect or open in ground circuit black wire between control head and programmer 3 No electrical power to programmer yel...

Page 32: ...ke the wires attached to those areas Listen for buzzing or clicking of the transducer If the problem cannot be pinpointed by transducer buzzing remove the programmer cover reinstall the vacuum and electrical connectors and attach a good voltmeter to the transducer output terminal grey wire Repeat the rapping and wire shaking and observe the voltmeter for violent erratic voltage fluctuations Replac...

Page 33: ...NG AND HEATING 1 7 1 BATTERY 1 t h I r FUSIBLE LINK AUTO RELAY SOLENOID r r CaAPRESSOR AMBIENT SWITCH OPEN BELOW 32 SWITCH CLOSED AT RUN ONLY PROGRAMMER AMBIENT L J IN CAR SENSOR SENSOR Fig 1 4 Blower Control Circuit ...

Page 34: ...ished when a ground path is completed for either the Lo relay coil or the Auto relay coil Relay coil grounds are completed by a the heater turn on switch which provides delay for heater water warm up in winter operation b the in car switch which provides immediate turn on in summer operation or c manual override in the Vent and Def settings Blower speed control is accomplished by actuating only th...

Page 35: ...IN AUTO SETTING I 1 Open resistor on programmer blower circuit board 1 I NO HEATER TURN ON IN COLD WEATHER EXCEPT IN VENT AND DEF I 1 Electrical disconnect at heater turn on switch located at front of R H cylinder head 2 Defective heater turn on switch will not close Check by grounding switch feed wire 3 If problem persists refer to electrical circuit diagrams for wiring discontinuity NOTE If prob...

Page 36: ... condition UPPER AND LOWER MODE DOOR ACTUATION PROBLEMS I The most likely malfunctions would be no air conditioner operation and split mode operation Vacuum is required to get air conditioner mode Check the hose connections at the mode door upper and lower vacuum actuators Split modes may occur because of malfunctions in either the upper or lower door circuit or because of leaks in other auxiliary...

Page 37: ... will bias the programmer to max heat 5 Electrical disconnect at the three way electrical connector inside the car to the right of the programmer 6 Backed out terminal or disconnect at the control head electrical connector 7 Defective compressor ambient switch 8 Open in wiring harness Refer to electrical circuit diagram Fig 1 4 AUXILIARY VACUUM CIRCUIT TEST PROCEDURE Remove car vacuum harness plug...

Page 38: ...er outlet Wait approximately one minute Thermometer should read 40 to 50 unless temperature or humidity of test area are excessively high 4 If the discharge temperature is significantly higher than SO disconnect ambient sensor electrical connector Check to assure that the air mix door link arm is pivoted fully to the Max A C position 5 If the discharge air temperature drops to 50 or below as a res...

Page 39: ... RPM with control lever in HI and temperature dial at 65 Blower motor should be disconnected when required in chart Run test at least twice Allow system to warm up and equalize before repeating If condition doesn t recur system has excess moisture causing ice to form in valve Discharge evacuate for 112 hour recharge Change dehydrator if necessary ...

Page 40: ...nate leak and recharge NOTE Disconnect compressor at connector on right rocker cover during recharging Install new thermal fuse 2 Thernial Fuse Was Blown During Previous Charging Check to assure adequate refrigerant charge and install new thermal fuse 3 Defective Expansion Valve failed closed Replace expansion valve recharge and install new thermal fuse 4 Defective Superheat Switch Before removing...

Page 41: ...trol is properly adjusted moving manual automatic switch back and forth will not move vacuum motor 7 Read manual control This indicates the resistance of the sensors and the temperature dial combined and should be 100 to 150 OHMS at 70 to 75 room temp 8 If reading is not 100 to 150 OHMS perform the temperature dial calibration test to check out the temp dial If temp dial checks ok the in car or am...

Page 42: ...ld should make vacuum drop to 0 in hg Reconnect hoses i Feedback Potentiometer Adjustment I Using screwdriver slip feedback pot shaft counter clockwise to stop gear does move Programmer shol ld move to full heat 2 Place manual automatic Switch in manual posi tion Rotate manual control to max heat 3 Move manual control to 180 Do not over travel 4 Slip feedback pot shaft slowly clockwise looking for...

Page 43: ...nd Limousine and optional on all other series cars The front system is the same for all series with the following few exceptions Specific refrigerant hoses for the Eldorado and 75 Series Specific heater water hoses for the Eldorado and 75 Series Specific condenser and receiver for the Eldorado 75 Series cars are equipped with a rear heating and an conditioning temperature control system which oper...

Page 44: ...diator is the actual cooling The blower and evaporator shown in Fig 1 8 is unit of the system The blower draws air from the air located in the engine compartment on the right side of inlet and forces it through the evaporator core where it the cowl This assembly consists of a plastic housing a is cooled and dehumidified Condensate is allowed to squirrel cage type blower the evaporator core and two...

Page 45: ...y cold In intermedi te positions some of the air passes through the heater core and some bypasses it so that the resulting air stream is mixed to the desired temperature The air stream is next directed by two mode doors so that it either flows out an opening in tile rear surface time camsing air to he discharged either from A C outlets or from the heater distrihr tor however when the control head ...

Page 46: ...1 20 AIR CONDITIONING AND HEATING Fig 1 8 Air Inlet Blower and Evaporator RECIRC AIR OPENING DASH PANEL IN BODY AIR PLENUM Fig 1 9 Heater Assembly t ...

Page 47: ...e direction can be and also directs two heavy streams of air under the front controlled independently by the knobs on the outlet seat to heat the rear compartment A moderate w of cool air to the floor is provided by two small plastic outlets located on the sides of the g Defroster Nozzle A C distributor These outlets can be rotated to obtain a A unitized defroster nozzle shown in Fig 1 12 more ind...

Page 48: ...EATING Fig 1 12 Defroster Nozzle FRONT DISCHARGE VALVE PLATE CLUTCH PLATE AND HUB ASSEMBLY OIL PICK UP TUBE OIL SUMP REAR THRUST THRUST CLUTCH COIL AND CYLINDER RACE BEARING HOUSING ASSEMBLY HALF Fig 1 13 Compressor Cross Section ...

Page 49: ... clutch coil springs in the clutch plate and hub assembly move the clutch plate away from the pulley and the clutch plate and compressor shaft cease to rotate b Low Refrigerant Flow Detection System A thermal fuse and superheat switch designed to protect the air conditioning compressor against damage when the refrigerant charge is partially or totally lost or other malfunctions causing low refrige...

Page 50: ...6 for cross section of valve f Evaporator This assembly shown in Fig 1 8 is described in part f RETAINER RING in the air delivery section One con ponent the oil bleed line was not covered in that section The oil bleed line is a small diameter aluminum tube routed from the inlet tank of the evaporator core to a fitting on the outlet side of the swtion throttling valve This line serves to protect th...

Page 51: ...pward through the core Heat from the warm air stream passing through the core is transferred to the refrigerant vaporizing the liquid Under high load conditions all the liquid is vaporized in the evaporator and only vapor flows through the suction throttling valve and the suction line to the compressor The heat laden vapor is drawn into the compressor and the cycle is repeated Temperature Control ...

Page 52: ...COMPRESSOR SIGHT GLASS CONDE DEHYDRATOR RECEIVER ...

Page 53: ...out the main outer tube this air stream causes a suction at the end of the inner tube so that air flows out it also The aspirator is equipped with a shield to prevent its outlet end from being blocked d Programmer The programmer which contains the bulk of the temperature control componsnts is located in the passenger compartment on the right hand end of the heater case See Fig 1 9 and 1 24 It is s...

Page 54: ...ve located in the center of the assembly is a nine port rotary valve which makes connections between the various ports or vents them as required to move air doors operate the heater water valve etc Refer to vacuum circuit on page 1 58 for additional information The feedback potentiometer is located just above the vacuum valve Its function is to snub movement of the vacuum motor so that a small sig...

Page 55: ...ver the Auto Relay in the remainder of the positions The two relays are identical and inter changeable g Heater Turn On Switch This switch is a bimetal snap actton swlrcn located in the front of the right hand cyljnder head Fig 1 27 It senses engine water temperature it is closed above approximately 120 F and is open below that temperature h Heater Water Valve This valve is located in the engine c...

Page 56: ...mmer delay is necessary to prevent sudden fogging of the wind Vacuum Relay shield that can happen when the car is started under Vacuum Motor certain conditions Do not remove this plug The resistance of the two sensors varies with their Another porous vacuum delay plug is located in the temperature Their resistance plus that of the tempera end of the orange vacuum hose that attaches to the ture dia...

Page 57: ...Fig 1 25 Operation of Vacuum Checking Relay ...

Page 58: ...ay with the in car sensor being maintained at 75 with a 75 temp dial setting The resistance of the ambient sensor at 80 is 32 ohms the in car sensor resistance at 75 is 68 ohms and the temp dial resistance at the 75 setting is 36 ohms These t h e e resistances total 136 ohms Referring to Fig 1 29 this resistance will position the programmer to produce M blower speed an inter mediate discharge air ...

Page 59: ... sensor string resistance whch r G l t s in high a m p l i z output current which results in transducer output vacuum which positions the vacuum motor in the c s o r cold area of operation Conversely cold sensors operate at h resistance which r e s u l t s in amplifier output which causes a h transducer vacuum which positions the vacuum motor in the w s m or hot area of operation It is worth notin...

Page 60: ...vacuum motor movement stops top of the plunger is also pulled downward This opens If the resistance of a sensor decreases or the temp the port at seat A so that control vacuum is high dial is moved to a lower setting the voltage at the base approaching raw vacuum level When current flows of Q1 will decrease More current will now flow through Q3 Q2 and Q1 The increased current flow through Q1 cause...

Page 61: ...do not include vacuum circuitry connected with the transducer and vacuum motor which functions independently and was explained in a previous section and shown in Fig 1 28 The auxiliary vacuum circuits are best understood not by examining them all at one time in a complete circuit but by tracing through each functional sub circuit as will be done beginning on page 1 52 Complete Vacuum Circuit Diagr...

Page 62: ... blower ture of the air is modulated to maintai n the temperature speed through the evaporator and heater assembly and on the dial the ability of the system to maintain this discharged into the passenger compartment from the temperature in warm weather is restricted however heater outlet when the ignition switch is in the Run since the compressor is disengaged at this setting position if turn on r...

Page 63: ...A C OUTLET AIR MIX DOOR POSITION IS FIXED AS SHOWN MAX COLD A C DISTRIBUTOR Fig 1 33 Air Flow At Vent VENT Unheated uncooled outside air is delivered water valve is closed There is no delay for engine water from the air conditioner outlets at a fixed low blower warm up speed The compressor is inoperative and the heater ...

Page 64: ...HEATING AIR INLET DOOR RECIRCULATED AIR ELDORADO ONLY Fig 1 34 Air Flow At Autov Warm Weather LO Operation at this setting is identical to that provided at Auto see page 1 39 except that the blower operates at a fixed low speed ...

Page 65: ...e dial temperature is approached Discharge air temperature will be varied automati cally between approximately 45 and 150 If the discharge air temperature is above approximately 90 the air will be delivered from the heater outlet Fig 1 35 below approximately 75 it will be delivered from air conditioner outlets Between these temperatures air is provided from both the heater and air conditioner outl...

Page 66: ...MODE DOORS s l I I IN HOT WEATHER Fig 1 36 Air Flow At Hi HI Operation at this setting is identical to that maximum cooling is required This setting is provided provided at Auto except that the blower operates at a for quickest possible cool down under extremely hot fvred maximum speed and recirculated air is used when ambient conditions ...

Page 67: ...l BI LEVEL Operation at this setting is the same as conditioner outlets This provides a pleasant draft free at Auto except bi level air delivery is provided mode of operation in mild weather it also permits approximately half the air is delivered from the heater defrosting of the side windows by the air streams fron outlet and the other half is discharged from the air the end air conditioner outle...

Page 68: ... SMALL AMOUNT OF AIR TO FLOOR Fig 1 38 Air Flow At Def DEF At this setting all the air is delivered to the turn on is immediate even with a cold engine windshield and the blower operates at a fixed high How the system operates at the various lever settings speed Temperature regulation is maintained Blower is depicted in organized fashion in the chart in Fig 1 39 ...

Page 69: ...EFROSTER DOOR POSITION SEALED DOOR WILL ASSUME BLEED POSITION AFTER 45 SECOND DELAY AND WILL DELIVER BLEED AIR TO W S IF IN HEATER OR BI LEVEL MODE FULL OPEN TO w s CONTROL HEAD TURNS TEMPERATURE DOOR POSITION VARIES RESPONSIVE TO SENSORS FORCED TO MAX A C VARIES RESPONSIVE TO WHICH CASE A COMPRESSOR DOESN T OPERATE OPERATES ABOVE APPROX 32 BLOWER ON SYSTEM RESPONSE MODE DOORS POSITION FORCED TO H...

Page 70: ...eather the relay could not be actuated until engine water is warm Blower current When the ignition switch is closed current flows flows through the Power Circuit to the Lo Relay through the Relay Coil Circuit to the Lo Relay and through all four resistors in the programmer to the to ground through either the engine temperature switch blower motor which operates at low speed Movement of or the in c...

Page 71: ...n at Vent Relay coil reaches ground regardless of whether the Fig 1 41 engine switch or the in car switch are closed This gives immediate blower turn on Since blower current must Current flow is the same as at Off except that two pass through all four resistors the blower operates at pads on the control head circuit board switch are fixed low speed connected by the wiper so that current through th...

Page 72: ...ITIONING AND HEATING FUSIBLE LINK IGNITION FUSEBLOCK SWITCH CLOSED AT RUN ONLY r r I I I I I I I CONTROL HEAD I L J I PROGRAMMER i8 L J Fig 1 42 Blower Operation At Lo Blower Operation at Lo Fig 1 42 Same as at Off ...

Page 73: ...lower Operation At Auto Blower Operation at Auto grounding connection on the control head circuit board Fig 1 43 switch so that the blower will delay in cold weather Blower current flows through the power circuit to the Current flows through the relay coil circuit to the center point of the wiper on the programmer and auto relay and to ground through either the engine through one two or three resi...

Page 74: ...ads on the control head directly to the blower motor There is no resistance in the circuit so Current flow through the relay coil circuit is the that the blower operates at a fixed high speed with no same as at Auto Blower current however does not programmer control over its operation go through the programmer but is routed through two ...

Page 75: ...B I I 1 I I I y RELAY I Y I 1 I y I 1 1 C O I L I I I 11 I I I CIRCUIT I I I L _ I L 1L d J I I I A C I I Y Y I 1 I 1 1 5 A I I 3 L I I IGNITION FUYBLOCK SWITCH CLOSED AT r I I I I I 1 CONTROL HEAD I I L J I I I t I PROGRAMMER lO L l Fig 1 45 Blower Operation At Bi Level Blower Operation at Bi Level Fig 1 45 Same as at Auto ...

Page 76: ...peration At Def Blower Operation at Def even with a cold engine Blower current flows through Fig 1 46 the power circuit to two inter connected pads on the control head and to the blower The blower operates at a The Auto Relay Coil is grounded through two pads fixed high speed on the control head so that there is immediate turn on ...

Page 77: ...AIR CONDITIONING AND HEATING 1 51 Fig 1 47 Compressor Electrical Circuit ...

Page 78: ...on port 6 is connected to port 5 which is connected by the chartreuse hose to port 5 on the control head vacuum valve This port is vented at Off Bi Level and Def so that the door must remain in the heater posi tion at those settings even though the programmer is positioned to produce A C mode At LO Auto and Hi however port 5 is connected to port 1 as is shown in the sketch This port is connected b...

Page 79: ...r which positions the lower The lower mode door actuator is connected by a tan mode door in the A C position At Off and Def hose to port 3 on the control head Port connections in port 3 on the control head is vented forcing the door to the control valve at Lo Auto and Hi are as heater mode At Bi Level port 3 is connected to port shown in the sketch At the programmer port 5 is 1 on the control head...

Page 80: ...ibility of defroster bleed at all settings except Off The programmer exerts an indirect influence in this function if it in conjunction with the control head valve provides vacuum to put the mode doors in the A C positions these doors intercept all air headed toward the defroster door and there is no defroster bleed air even though the defroster door is cracked open Note that port 4 which feeds va...

Page 81: ... 51 Defroster Vacuum Circuit Defroster Vacuum Circuit Fig 1 5 1 nipple is connected by the dark blue hose to port 6 on the control head This port is vented at all settings The defroster door is moved full open whel dcuum except Def where it is connected to port 1 as shown is applied to the center nipple of the actuator This The programmer has no control in this circuit ...

Page 82: ...checked vacuum at port 1 at the Hi setting also at Bi Level and The recirc air actuator is connected by the orange Def as shown Thus if the programmer is at Max hose to port 4 on the programmer This port is vented at A C and the control is at Hi recirc air operation will all programmer positions except Max A C resulting in be obtained On Eldorado models the red hose is con outside air At Max A C p...

Page 83: ...ter Valve Vacuum Circuit Heater Water Valve Vacuum Circuit travel There it is connected as shown to port 5 which Fig 1 53 is connected by the chartreuse hose to port 5 on the control head At Vent Lo Auto and Hi port The water is port the 5 is connected to checked vacuum at port 1 closing the programmer which is vented opening the valve at all valve programmer positions except at the Max A C end of...

Page 84: ...VAC RECIRC I HEATER WATER V A L E VAC CLOSED VENT OPEN VALVE CONNECTIONS RECIRC AIR FOR VARIOUS H W V CLOSED A C MODE OUTSIDE AIR H W V CLOSED A C MODE CUTSIDE AIR H W V OPEN A C MODE OUTSIDE AIR H W V OPEN BI LEVEL MODE OUTSIDE AIR H W V OPEN HEATER MODE NOTE VENTED TO ATMOSPHERE Fig 1 54 Complete Vacuum Circuit ...

Page 85: ...d cap connectors 5 Cover compressor openings with Test Plate 5 9625 to prevent dirt from entering compressor 6 Disconnect electrical connector from clutch coil terminals 7 Disconnect superheat switch 8 Loosen bolts securing power steering pump to mounting brackets pivot pump toward engine and remove drive belts from compressor 9 Remove two screws nut and washers securing compressor rear mounting b...

Page 86: ...described in Note 44 2 Remove two screws securing upper radiator mount bracket at each side of radiator cradle and re move two screws one each side securing wheelhouse brace to bracket Remove bracket 3 Disconnect high pressure vapor line 4 Remove clip securing liquid line to condenser frame 5 Disconnect liquid line from condenser outlet pipe 6 Remove four nuts two each side securing con denser mou...

Page 87: ...b lnstallation 1 Position air inlet near cowl and connect vacuum hose to recirc door actuator Install sealer any place that gasket has separated 2 Position evaporator case near cowl and secure to air inlet with three screws 3 Secure evaporator case to cowl with four screws and two nuts 4 Connect high pressure line to X valve using a new O ring 5 Connect low pressure line to P O A valve using a new...

Page 88: ... brace on front of blower evaporator assembly case 6 Disconnect expansion valve from evaporator inlet pipe fitting and remove expansion valve 7 Remove clamp from expansion valve b Installation 1 Install clamp on expansion valve 2 Using a new O ring connect expansion valve to evaporator inlet pipe fitting 3 Install screw securing expansion valve clamp to brace on front of blower evaporator assembly...

Page 89: ...te heater core in position in heater case 2 Secure bottom of core with clip and two screws 3 Secure top of core with clip and screw 4 Install rubber seal over water nipples 5 Install heater case as described in Note 18 20 Water Control Valve NOTE The thermal vacuum valve is installed on 6F rear units only and is serviced with the water control valve as an assembly i r l a Removal Fig 1 26 1 Clamp ...

Page 90: ... superheat switch retainer ring using snap ring pliers 5 5403 2 Lubricate housing of superheat switch with 525 viscosity oil and insert switch carefully into switch cavity until switch bottoms 3 Using Snap Ring Pliers 5 5403 install superheat switch retainer ring with high point of the curved sides next to the switch housing Fig 1 15 Be sure the re tainer ring is properly seated in the snap ring g...

Page 91: ...e and hub assembly Fig 1 57 4 Remove square drive key from shaft 5 Kemove huh retainer ring using Snap Ring Pliers 5 5403 21 and then remove huh spacer Fig 1 58 b Installation I Install square drive key on shaft allowing it to project approximately 3 16 inch out of keyway 2 Wipe frictional surface of clutch plate and pulley clean THIN WALL C L u l c n nu SPECIAL SOCK LUTCH SSEMBLY Fig 1 56 Removin...

Page 92: ... 1 60 28 Compressor Pulley and Bearing f SNAP RING PLIERS Fig 1 61 Removing Pulley Retainer Ring 3 Pry out absorbent sleeve retainer and remove absorbent sleeve from compressor neck 4 Place Puller Pilot 5 9395 over end of com pressor shaft CALITION It is intportant that Puller Pilot 5 9395 be used to prevcnt internal d a m to compressor when removing pulley Under no circumstances should Puller be ...

Page 93: ...rom compressor neck face 8 lnstall clutch plate and huh assembly as de scr oed in Note 27b 29 Compressor Pulley Bearing Replacement I Reniove clutch plate and hub assembly as described in Note 27a 2 Remove pulley and hearing assembly as de scribed in Note 28a 3 Remove pulley bearing retainer ring with a small screwdriver or pointed tool Fig 1 64 4 Place pulley and bearing assembly on inverted Supp...

Page 94: ... Align locating extrusions on coil housing w t h holes in front head casting 3 Install coil housing retainer ring with flat side of ring facing coil using Snap Ring Pliers 5 6435 26 4 Install pulley and bearing assembly as described in Note 28b 5 Install clutch plate and hub assembly as de scribed in Note 27b 31 Compressor Shaft Seal Assembly a Removal 1 Remove clutch plate and hub assemblv as de ...

Page 95: ... on new seal assembly with tangs of Seal Remover and Installer 1 9392 and install new seal assembly over flats on shaft Turn tool counter clockwise to release it from seal tabs and remove tool 4 If ceramic seat is being installed coat seal face of new seal seat with clean refrigeration oil and install new seal seat using Seal Seat Remover and lnstaller 5 23128 The seal seat is installed with the t...

Page 96: ...ernal mechanism assembly 10 Suction reed valve front fear 11 Discharge valve assembly front rear 12 Gasket service kit containing all gaskets seals O rings etc 13 Shaft seal kit 14 Nuts head to shell and shaft 15 Retainer rings 16 Cylinder locator pins 17 Valve and head locator pins 18 Service type discharge cross over tube kit All service parts are protected by a preservation process and packaged...

Page 97: ... Remove and discard rear head to shell O ring Suction Reed Fig 1 76 Removing Rear Suction Reed 11 Carefully remove rear discharge valve plate assembly Use two small screwdrivers under reed retainers and pry up on assembly Fig 1 75 Do not position screwdrivers between reeds and reed seats 12 Examine valve reeds and seats Replace entire assembly if any reeds or seats are damaged 13 Using two small s...

Page 98: ...iston bores in the front cylinder half in like manner so that pistons can be replaced in their original locations 3 Separate cylinder halves using a wood block and mallet Fig 1 79 Make certain that discharge cross over tube does not contact axial plate when separating cyl inder halves Suppol t Block J 95 Fig 1 79 Separating Cylinder Halfs CAUTION Under no circumstances should shaft be struck at ei...

Page 99: ...nder NOTE This is necessary only on original factory equipment as cnds of the tube arc swedgcd Into cylinder halves The discharge cross over tuhe in internal mech anism assemhlies that have been previously serviced l ave an O ring and hushing at each end of the tuhe and can he easily removed hy hand 16 Examine piston bores ndneedle hearings in front and rear cylinder halves Replace front and rear ...

Page 100: ...eot Retainer Ring Pressure Relief Valv Clutch Coil Retainer Rint lutch Coil and Housing Assembly Outer Oil Pump Gear Reor Dirchclrge Valve Plate Assembly Reor Suction Reed Crossover Cover pacer 1 I I I I I I Piston Ring Shaft Discharge Crossover Tube 0 Ring r0 t Suction Reed iFront Discharge Valve Plate Arrembly ...

Page 101: ...at step 15 between these same ports and record measurements 18 Select a numbered shoe disc corresponding to minimum feeler gage reading recorded in the three checks Place shoe discs in Parts Tray in compartment Fig 1 85 lnstalling Shoe Disc o t i 7 8 5 Rocrx and 8roring Fig 1 86 lnstalling Piston corresponding to piston I and rear ball pocket position NOTE Shoe discs are provided in 0005 inch one ...

Page 102: ...rear hubs of cylinder 22 Remove nuts from top plate of Compressing Fix ture and remove top plate 23 Separate cylinder halves while unit is in fixture It may he necesstlry to use a wood block and mallet 24 Remove rear cylinder half and carefully remove one piston at a time from axial plate and front cylinder half Do not lose tlie relationsllip of the front ball and shoe disc and rear hall Transfer ...

Page 103: ...s Align cover with ends of cylinder faces by gently tapping end of cover with a plastic hammer O R ng t D rcharga Crossover Tube Burhtng Fig 1 90 Service Type Crossover Tube Fig 1 91 Installing 0 Ringon Crossover Tube 37 Compressor Internal Mechanism Installation 1 Place internal mechanism on Internal Assembly Support Block 5 9521 with rear end of shaft in block hole 2 lnstall new O ring and bushi...

Page 104: ... 19 Position outer oil pump gear over inner gear with previously applied identification mark up and when standing facing oil sump position outer gear so that it meshes with inner gear at the 9 o clock position and iover Tube Fig 1 92 Installing Front Suction Reed 8 Generously lubricate angled groove at lower edge of front head casting with 525 viscosity refrigeration oil and install new O ring in ...

Page 105: ...ounting holes should be in alignment with the compressor sump Make certain that suction scrcen does not drop out of place wlle llowering rear head into position NOTE If rear head asscmbly will not slide down over dowels in internal mechanism twist front head assembly back and forth very slightly hy hand until rear head drops over dowel pins 25 Install nuts on threaded shell studs and tighten evenl...

Page 106: ...and internal leaks are corrected If no leak was indicated proceed with step 14 14 Disconnect charging station from test plate 15 Remove test plate from compressor PROGRAMMER OVERHAUL 39 Programmer Disassembly a Transducer Removal 1 Remove programmer as described in Note 12a 2 Remove programmer cover 3 Disconnect transducer electrical leads at transducer 4 Remove vacuum hoses from transducer vacuum...

Page 107: ...posi tion blower contact assembly to vacuum motor Use care to be sure that two balls do not fall out Engage stud of contact in slot of gear 2 Align marks on feedback pot and blower contact gear and position vacuum motor to programmer housing Check for third ball in casting pivot hole 3 With vacuum motor mechanism in position on output shaft arm tighten retaining screw on output shaft bracket 4 Sec...

Page 108: ...install short yellow hose between vacuum motor and checking relay 7 Install programmer cover 8 Install programmer as described in Note 12b k Amplifier Removal 1 Remove programmer as described in Note 12a 2 Remove programmer coyer 3 Remove two screw studs securing programmer vacuum valve to programmer housing and swing valve out of way with hoses still attached 4 Remove two hoses from transducer 5 ...

Page 109: ...ration Do not leave the system open any longer than is necessary 5 Any time the system has been opened and sealed again it must be properly evacuated as described in Note 44c CAUTION Use only refrigerantfrom a reputable dealer as contaminated refrigerant will not only lower the efficiency of the system but will damage the unit Use only refrigerant I2 as refrig erant for the Cadillac system since a...

Page 110: ...installation 2 Always use two wrenches when tightening fit tings to prevent twisting the hoses or soft aluminum tubing Lubricate all fittings with refrigeration oil to allow the joint to be tightened without twisting the pipe 3 Cap ends of lines that have been disconnected for any reason to prevent entrance of moisture or dirt 4 Gage set and lines should be kept clean and free from moisture 5 Do n...

Page 111: ...lt Tension Check tension of belts as described in Section 6 Note 9 f Compressor Clutch Observe clutch to make certain it is engaging and disengaging while moving the selector lever between VENT and LO with the engine idling 43 Checking Refrigerant Charge Bubbles in the sight glass dc not always indicate that the system is lou on refrigerant If the system is at a control point bubbles may app ar in...

Page 112: ...e to gage fitting on suction throttling valve Fig 1 102 container such as an empty refrigerant oil bottle 4 Loosely install Gage Adapter 5 5420 on high c EvacuatingSystem side pressure fitting Whenever the air conditioning system is opened for 5 Tighten gage adapter and allow system to dis any reason it should not be put into operation again charge at a rapid rate into the container until it has b...

Page 113: ...5 114 pounds on Fleetwood Seventy Five Fleetwood Seventy Five refrigerant will have to be added in two steps as required charge is gre i than capacity of Charging Station cylinder 5 Fully open valves 2 and 4 to allow refrigerant to flow into system NOTE If refrigerant does not flow freely into system it is probably due to valve cores in high pressure line and STV fittings not being depressed far e...

Page 114: ... indicated below Oil should be poured directly into the replacement component If an evaporator is installed pour oil into inlet pipe with pipe held vertically so oil will drain into core If any other components such as valves or hoses are replaced no additional oil is necessary 3 Compressor and Components CAUTION If system has been operated and there is evidence of a major loss of oil system has p...

Page 115: ...e Test The following procedures pertain to all models except Fleetwood Seventy Five Performance Tests for the Fleetwood Seventy Five Air Conditioning Systems are explained in Note 50 t W 100 110 AIR TEMP IN FRONT O F CONDENSER O F a Performing Test 1 Connect gage set high and low pressure lines Fig 1 101 2 Hook up tachometer 3 Disconnect vacuum hose to vacuum motor and plug hose or connect tester ...

Page 116: ...lower should operate at fixcd Lo speed c A C compressor should not oper ltc 1 I Sct lever at OFF and temperature dial at 65 I Air discharge should be from heater outlet h Blower should operate at fixed Lo speed c AIC compressor shot ldnot opcratc 48 Component Adjustments Be sure to allow sufficient time for the i lr engine to warm up and for the system to turn on before attempting calihrat on Do n...

Page 117: ...ot Adjustment 1 Remove the plastic cover from the programmer while it is still mounted in the car 2 Connect the Tester 5 23678 into the wiring harness and the programmer 3 Place the control head selector lever in the AUTO position 4 Place the MANUAL AUTOMATIC switch on the tester in the MANUAL position 5 Place t h e TEMPERATURE DIAL CALI BRATOR switch of the tester in the OFF position 6 Rotate the...

Page 118: ...have tee connections incorporated to provide feed to and Fig 1 1 08 the rear system The rear compartment system utilizes a series flow reheat type evaporator heater and blower assembly located on the axle kickup shelf in the trunk compart ment This assembly draws car interior air from the rear compartment through the package shelf cools and reheats it as required and discharges it into the passen ...

Page 119: ...DITIONING AND HEATING 1 93 DEHYDRATOR THROTTLING M O D E D O O R VACUUM POWER UNITS NDlTlONER OUTLET AIR CONDITIONER OUTLET BLOWER MOT BLOWER RESISTOR STER SWITCH POWER SERVO Fig 1 108 Locationof 6F A C Units ...

Page 120: ...lower assemblies on either side of the case and then expelled into the car Control Panel 6F Rear The control panel Fig 1 109 located in the right rear quarter panel trim consists of a temperature dial and an ON OFF switch The temperature dial is gradu ated in 5 degree divisions from 65 F to 85 F This dial is used to select the desired temperature The ON OFF switch controls vacuum feed to the rear ...

Page 121: ... the amplifier The output of the ampli fier is high and is being fed to the transducer where it is converted to a weak vacuum output causing the power servo to be in the maximum air conditioning position When the switch is placed in the ON position vacuum is fed to the master switch completing the elec trical circuit to the blower motor and compressor and to the servo vacuum valve In the maximum a...

Page 122: ...atures acting on the sensors their resistance values will be high causing a weak signal to the amplifier The output of the amplifier is low and Increasing Vacuum 4 1 4 13 42O is being fid to the transducer where it is converted to a strong vacuum output causing the power servo to move toward the maximum heat position Decreasing Vacuum 2 3 4 9O 36 In the heat mode the vacuum circuitry is such that ...

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Page 125: ...tact any metal 10 Place another thermometer in right front air conditioning outlet grille Thermometer bulb must not contact any metal 11 Open all doors and windows 12 Use Humidicator 5 6076 to obtain simultaneous temperature and relative humidity readings of air entering air intake gill6 as follows a Shake thermometer down to settle red and blue columns in bottom of tubes b Throughly moisten wick ...

Page 126: ...Automatic Climate Control system when the system turns ON but operates only in maximum heat or maximum air conditioner at high blower speed If the system is operating incorrectly but does have some degree of self modulation first check NOTE For positive results the Automatic Climate Control system should be tested in an area where the ambient temperature is between 70 F and 80 F If the ambient tem...

Page 127: ... circuit board j If system fails to work properly after replacing amplifier circuit board check car wiring 4 Regulated Vacuum Test a Connect a vacuum gage to transducer vacuum input hose Gage should read above 14 inch Hg If not locate and correct vacuum failure b Reconnect vacuum input hose and connect vacuum gage to transducer output fitting using xlength of vacuum hose c Make certain that temper...

Page 128: ... servo unit h If system failed to turn on proceed to step 2 2 Source Test a Turn off engine if still operating and connect Automatic emperaiureControl Tester 5 22368 01 as described in NO 51 b Turn system ON and set temperature dial to 71 setting c With transmission in PARK position start engine d Place rocker switch on Automatic Temperature Control Tester 5 22368 01in MANUAL position e Turn volta...

Page 129: ...emperature dial should indicate 7S F f If temperature dial does not indicate proper setting adjust temperature dial as indicated in Note 53b 8 operational Test 697 ONLY a This procedure is to be used when testing the rear system on the Fleetwood Seventy Five The tester should be connected to the system as described in Note 55 for rear system Both systems should be turned ON the front system should...

Page 130: ...tor 3 Install control panel as described in Note 53b 4 Adjust temperature dial as described in Note 48b c Control Switch Removal 1 Remove control panel as described in Note 53a 2 Disconnect black and yellow hoses from control switch 3 Remove two screws and remove switch d Control Switch lnstallation 1 Position switch to control panel and secure with two screws 2 Connect black and yellow hoses to p...

Page 131: ...s and install clamps on hoses 3 Remove clamps pinching off hoses 4 Install vacuum hoses on thermal vacuum valve NOTE Yellow striped hose connects to vacuum nipple closest to water outlet fitting 5 Connect red striped vacuum hose to water con trol valve vacuum power unit 6 Install trim panel inside luggage compartment 7 Replace any coolant lost 60 Blower Resistor 6F Rear a Removal 1 Remove trim pan...

Page 132: ...OMMEl GROMMET COMPART PAN SECTION P P CROSSMEMBER COMPARTMENT I VlEW E SECTION S S LAMP COMPARTMENT PAN wv SECTION R R VlEW G TO REAR AMBIENT SENSOR JUMPER HARNESS TO RH MOD TO LH MODE SELECTOR Fig 1 116 Rear Heater Evaporator and Blower Assembly ...

Page 133: ...t II 66 Transducer 6F Rear a Removal 1 Remove trim panel inside luggage compartment 2 Disconnect vacuum hoses from fittings on trans ducer 3 Disconnect transducer electrical connector 4 Remove t w o screws securing transducer mounting bracket to power servo and remove trans ducer b Installation 1 Position transducer to power servo and secure with two screws 2 Connect transducer electrical connecto...

Page 134: ...bly 4 Disconnect suction throttling valve from evapor ator outlet pipe 5 Disconnect equalizer line from suction throttling valve 6 Remove ambient air inlet fittings from case 7 Remove four screws on top of case securing evaporator core to case and remove evaporator core from case 8 Remove expansion valve from evaporator core as described in Note 71a b Installation 1 Install expansion valve to evap...

Page 135: ...AIR CONDITIONING AND HEATING 1 109 I Fig 1 117 Refrigerant and Water Lines ...

Page 136: ...n the Off position vacuum is applied to the diverter door vacuum actuator The diverter door is then positioned to seal off air flow through the heater assembly and divert air into the car through the diverter door opening under the instrument panel at the right side of the car Since the blower motor operates when ever the ignition is on this provides positive air flow into the car when the heater ...

Page 137: ...CONTROL HEATER ASSEMBLY I DEFROSTER DOOR VACUUM ACTUATOR Fig 1 118 Location of Heater Components Fig 1 119 Heater Air Flow OFF CONTROL IN THE OFF SETTING MINIMUM HEAT CONTROL IN THE ON SETTING TEMPERATURE LEVER ALL THE WAY TO THE LEFT AIR MIX CONTROL IN THE b SETTING TEMPERATURE LEVER AT MID TRAVEL MAXIMUM HEAT CONTROL IN THE ON SETTING TEMPERATURE LEVER ALL THE WAY TO THE RIGHT I1 ...

Page 138: ...al circuit is illustrated in Fig 1 121 the current flows from the batterv through the ACC terminal of the ignition switch and through a 15 ampere fuse to the master ON OFF switch located on Fig 1 120 Heater Control Panel the control panel When the master switch is closed current flows to the blower control switch through The blower resistor to the blower motor and to ground GROMMET INSTRUMENT PANE...

Page 139: ...rical connector at blower resistor 76 Heater Blower Motor a Removal 1 Disconnect electrical connector at lead to motor Fig 1 122 2 Remove five screws securing blower to case and remove blower b lnstallation 1 Place bead of sealer around opening where blower will contact case 2 Guide blower motor against cowl and place on locating dowel 3 Install six screws securing blower to case 4 Connect electri...

Page 140: ...ve into position on cowl 2 Position retainers at ends of core and secure with 2 Working under hood install two screws and two two screws nuts securing heater case to cowl 3 Install heater case as described in Note 77b 3 Install heater hoses to heater core nipples Secure with clamps 4 Refill cooling system 5 Install bowden cable to temperature door and secure cable to case with one screw 6 Install ...

Page 141: ...TIONING AND HEATING 1 115 FLOW CONTROL RESTRICTOR VlEW B RADIATOR CR ADLE SEE FIGURE1 I SEE FIGURE 1 WHEELHOUSE FIGURE 1 698 SERIES ONLY VlEW A FIGURE 4 FIGURE 5 FIGURE 6 Fig 1 124 Heater Vacuum Hoses and Cables ...

Page 142: ...M N 0 P Q Key R S T U V W X Y Z AA BB CC DD EE FF CG ToolNo 1 9392 1 9396 J 9480 1 9401 1 9403 J 8433 J 9395 1 9625 1 9399 1 9393 1 9397 1 5139 1 6435 J 5403 1 23500 1 23678 ToolNo 1 9402 1 9432 1 6084 1 21530 J 5421 1 6076 1 21512 1 22368 01 1 5420 1 9521 1 8001 3 I 8001 2 1 8001 1 1 23600 1 8092 1 9398 1 9481 Name Parts Tray Needle Bearing Installer Leak Detector Torch Temperature Dial Adjuster ...

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Page 219: ...move lower shock fasteners raise car somemore until springs are fully extended and can be removed CAUTION you may have to remove the rear brake line from the center of the axle to prevent it from being overextended My biggest problem was getting the car jacked up high enough file D Manuals Cadillac 1973 1973 20Cadillac 20Service 20Manual rear 20springs txt 7 1 2007 2 23 26 PM ...

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Cadillac Cadillac 1973, Shop Manual

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