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the bevel pinion and seat securely against the pump drive
pinion. Install bearing cone set spacer on to the bevel pin-
ion.

Install the bearing cup retaining ring into the groove in the
carrier bore.

Place the carrier assembly onto bench with the pump side
facing up. Install one bearing cup of bearing set (1) and
seat against the retaining ring.

Turn the carrier over so that the pump side faces down.
Install the bearing cup spacer with the shoulder inside of
the retaining ring. Install the remaining bearing cup and
seat firmly against the bearing cup spacer and retaining
ring.

Place the carrier over the bevel pinion so that the pump
side bearing cup seats on the bearing cone.

Press the remaining bearing cone securely onto the bevel
pinion, seating into the bearing cup.

Lubricate and install O-Ring (5) onto the bevel pinion
against the bearing cone. Install seal spacer (9) over the
bevel pinion with internal tapered edge toward the bear-
ing cone and O-Ring.

Install the oil seal retaining ring (7) into the carrier bore
groove. Apply non-hardening sealant to the outside sur-
face of the oil seal (8) and install the oil seal firmly against
the retaining ring (7).

Install the bearing lockwasher (4) and locknut (2) onto the
bevel pinion. Tighten the locknut to 150 lb•ft (203 N•m)
torque and bend tang of lockwasher (4) into slot of lock-
nut.

Spacer, Bearing Cup

Retaining Ring

Bearing Cup

Bearing Cup

Carrier

Seal Sleeve

O-Ring

Bearing Cone

Bearing Cone

Set Spacer, Bearing Cone

Pinion, Pump Drive

Bevel Pinion

Apply LocTite
601 Here

BEVEL PINION CARRIER INSTALLATION

Apply gear tooth marking compound to bevel pinion and
install carrier assembly into winch case using the original
shim set. Replace gasket as required. Tighten capscrews
to 75 lb•ft (102 N•m) torque.

Rotate bevel pinion in same direction as PTO shaft rota-
tion and check bevel pinion/gear tooth contact pattern.

See typical contact patterns, next page.

Remove carrier assembly to add or remove shims to
obtain the correct tooth contact pattern illustrated below.

Refer to Clutch Shaft Service for bevel gear backlash
adjustment procedure.

Upon final installation of carrier assembly, apply non-
hardening thread sealant to capscrews and tighten to 75
lb•ft (102 N•m) torque.

Refill winch to proper level with recommended lubricant.

30

Summary of Contents for CARCO 50B

Page 1: ...ECTRONIC CONTROL SERVICE MANUAL LIT2055 R4 5 2010 Printed in U S A PACRWINCH DIVISION P O BOX 547 BROKEN ARROW OK U S A 74013 PHONE 918 251 8511 FAX 918 259 1575 www paccarwinch com 2010 PACCAR Winch...

Page 2: ......

Page 3: ...odel and serial number This complete service manual is available for viewing and or downloading as a PDF file on our internet website http www paccarwinch com literaturelist asp TABLE OF CONTENTS GENE...

Page 4: ...raps of cable bright red to serve as a visual warning RECOMMENDED OPERATING PRACTICES 1 Leather gloves should be used when handling winch cable 2 Operate the winch to match line speeds to job condi ti...

Page 5: ...ventive Maintenance section of this manual The CARCO Power Shift Winch is a single drum unit which mounts on the rear of a crawler tractor It is driven by engine power through the tractor PTO Power Ta...

Page 6: ...gested in this manual will opti mize component service life The intervals may be grad ually increased or decreased with experience of a partic ular lubricant and evaluation of your application 1 Oil L...

Page 7: ...shield may be installed on earlier serial number winches Refer to CARCO Service Bulletin 97 NOTE If the suction strainer shield or shield seal rings are removed for any reason reinstall them by follow...

Page 8: ...in NPT adapter will be required Start tractor and operate engine at approximately 800 1000 RPM Place Power Shift lever in the Brake Off posi tion and observe BRAKE RELEASE oil pressure Loosen cable ad...

Page 9: ...ty damage injury or death Do not shift Freespool lever and attempt to engage cable drum while the cable drum or gear train is rotat ing Winch gear train damage may result CAUTION Basic Oil Requirement...

Page 10: ...45 35 70 50 23 31 50 35 80 110 80 150 110 110 55 75 150 115 210 160 14 20 13 20 12 18 11 18 265 200 Torque LB FT Grade 5 Grade 8 380 280 7 8 9 14 420 325 600 450 3 4 10 16 680 1 1 8 7 12 790 590 1290...

Page 11: ...r unwanted winch actuation The joystick produces a signal by a magnetically induced voltage as the control lever is moved near the sensing devices on the circuit board beneath the lever The small indu...

Page 12: ...is incorporated into the wiring har ness and may be found near the winch end of the har ness The main hydraulic test port is located on the RH side of the winch case next to the wiring harness con ne...

Page 13: ...WIRING HARNESS 70A for D6R Series II 11...

Page 14: ...12 WIRING HARNESS 50B for D5N D6N...

Page 15: ...OW OPT WHITE ORANGE GRAY OPT TAN 1 RED 2 BLACK 3 ORANGE 4 PURPLE 5 BLUE 6 YELLOW 5V GND DECODE ENABLE Y AXIS X AXIS CONNECTOR 2 1 PIN NO RED GREEN TO FILTER LIGHT LED BLACK RED BLACK ORANGE 24 VDC 24...

Page 16: ...ed when the circuit is unloaded The pressure maintenance system operates continuous ly to maintain a stand by supply of oil pressure for the control system The pressure maintenance system con sists of...

Page 17: ...s pump oil to flow through the lube circuit and return to the winch sump The oil stored in the accumu lator is trapped by the check valve 9 and the accumu lator holding cartridge 13 This oil is availa...

Page 18: ...full 24 volts DC to the solenoid valves The main pressure sole noid valve 10 and the accumulator holding valve 13 receives 24 volts DC through the blue wire within the winch case The full flow of the...

Page 19: ...uence of 24 volt DC signals to energize the prop er solenoids of the control valve within the winch case The main pressure solenoid valve 10 is energized to bring the control system oil pressure from...

Page 20: ...4 volt DC signals to energize the proper solenoids of the control valve within the winch case The main pressure solenoid valve 10 is energized to bring the control system oil pressure from stand by pr...

Page 21: ...is sent to the control mod ule to initiate a sequence of 24 volt DC signals to energize the proper solenoids of the control valve within the winch case The main pressure solenoid valve 10 is energized...

Page 22: ...oper ating Voltage readings at the diagnostic connector on the wiring harness Key switch on Pin 11 is ground Refer to diagnostic plug drawing on previous page for pin number BRAKE ON Neutral 24Volts...

Page 23: ...corrective action for A2 Also disas semble clutch assembly to check for worn parts Determine the root cause of failure C Tractor torque converter stalls out when attempting to REEL IN or REEL OUT 1 B...

Page 24: ...ay be tested with an Ohm meter across the terminals A reading of no more than 25 Ohms at 70 F 21 C is required The resistance should decrease with increased temperature 5 Drain oil remove small side i...

Page 25: ...fective Install a gauge at the pressure tap on the front of the winch and record the pressure The pressure should increase to approximately 370 PSI 2550 kPa then fall slowly back to approx imately 315...

Page 26: ...pressure solenoid valve item 10 Refer to corrective action D4b G Winch runs noisy 1 Improper bevel gear pinion back lash 2 Defective gear train bearing s and or gear s 1 Establish clutch shaft end pl...

Page 27: ...DC Replace solenoid s or correct electronic control system as required Check the resistance of the coil s If the resistance across the terminals of the coil s with the wires removed is less than 25 Oh...

Page 28: ...round seeking circuit The light will be on if the wire has chaffed and shorted to ground or if the switch is stuck in the bypass position Replace the sending switch as required N Brake will not releas...

Page 29: ...itch ON then slowly cycle the joystick lever into full REEL IN and REEL OUT positions a minimum of five 5 times The tractor electrical system MUST be ON during this procedure Two 2 1 in 7 UNC threaded...

Page 30: ...50 Fe 43 75 Mechanical properties tensile strength 65 000 84 000 psi 448 000 579 000 kPa yield strength 45 000 65 000 psi 310 000 448 000 kPa elongation 15 25 Flux cored wire Composition Ni 50 00 Fe...

Page 31: ...cks under the pump drive pinion 10 as close to the bevel pinion gear as possible Press the bevel pinion 16 free of the bearing cone and pump drive pinion Support the carrier in a vice and remove the o...

Page 32: ...rdening sealant to the outside sur face of the oil seal 8 and install the oil seal firmly against the retaining ring 7 Install the bearing lockwasher 4 and locknut 2 onto the bevel pinion Tighten the...

Page 33: ...pplied 350 psi 2413 kPa load to the pump Again record the flow for 15 seconds The minimum acceptable pump flow is 2 gpm US 7 6 lpm at 650 700 RPM PTO speed and 350 psi 2413 kPa Two quarts per 15 secon...

Page 34: ...ation the most common install the pressure adapter into A port B For clockwise cw bevel pinion rotation install the pressure adapter into B port NOTE Determine direction of bevel pinion rotation when...

Page 35: ...tion discs slip freely between the brake steel discs The bevel gears and center portion of the clutch shaft are supported by two large ball bearings while the ends of the shaft are supported by two ta...

Page 36: ...nts in the order in which they were removed Remove the rotary seal shafts 24 and bearing retainers 22 from each end of the clutch shaft With a gear puller remove the pinion gear 28 and bear ing cone 5...

Page 37: ...tains item 1 2 15 Plug contains item 1 1 16 O Ring 8 17 O Ring 2 18 O Ring 2 19 O Ring 4 20 Retaining Ring 2 21 Retaining Ring 2 22 Bearing Retainer 2 23 Back up Ring 4 24 Rotatry Seal Shaft 2 ITEM DE...

Page 38: ...er 30 R1 thru R4 4 Needle Bearing Inner Race 6 M1 M2 2 Bevel Gear Shim Pack Thickness Z B1 B2 M1 M2 S1 S2 S3 S4 R1 R2 R3 R4 The basic shim pack supplied through Service Parts is 120 in 3 05 mm thick R...

Page 39: ...e back up ring 23 next to the o ring Install the brake hub spacer 36 onto the clutch shaft next to the clutch housing The spacer should hold the o ring and back up ring into the clutch housing Install...

Page 40: ...one Apply Loc tite 271 or equivalent to the threads and pilot shoulder of the shaft and tighten to 40 lb ft 54 N m torque Tighten the current design to 130 lb ft 175 N m torque INSTALLATION Place the...

Page 41: ...ervice for installation instructions and procedure for obtaining cor rect tooth contact pattern With correct bevel gear tooth contact pattern established move clutch shaft assembly to the right brake...

Page 42: ...locked by the spring applied brake REMOVAL Right hand or left hand clutch removal may be accom plished with a winch mounted to the tractor However if both clutch assemblies are to be inspected for re...

Page 43: ...ve O Rings and back up rings from the piston Replace O Rings and or back up rings upon reassembly Remove the check valve seat 9 and steel ball 2 from the back side of clutch housing 11 Inspect for wea...

Page 44: ...teeth or lugs on outer diameter until a total of five friction discs and four steel discs are installed Slotted Housing Install the discs by starting with a steel separator disc 13 lugs on outside di...

Page 45: ...r normal conditions no periodic brake adjustment is required STANDARD BRAKE The brake may be used on an intermittent basis to lower a load However partially releasing the brake and lower ing the load...

Page 46: ...riction material is worn unevenly Inspect the steel discs 16 for scoring and warping Replace steel discs if they are not flat beyond 015 in 4 mm heat discolored or show signs of friction material tran...

Page 47: ...brake should be fully released at approximately 230 250 psi 1590 1720 kPa Continue to increase pressure to 350 psi 2410 kPa Close the hand pump valve and let stand for five minutes If there is any lo...

Page 48: ...13 X 2 G8 Z 1 18 SPRING 1 5 THRUST BEARING 2 19 CAPSCREW 1 4 NC X 2 SOC HEAD 3 6 ADJUSTER 1 20 CYLINDER ROD 1 7 CAPSCREW 1 2 13 X 3 4 G8 Z 1 21 CYLINDER 1 8 BUSHING 1 22 O RING 1 9 PINION 1 23 SPRING...

Page 49: ...adjuster counter clockwise CCW and remove it from the bearing carrier Remove and discard the O ring from the carrier Remove the capscrews from the large diameter second reduction shaft bearing carrie...

Page 50: ...ction gear and clutch collar assembly over the bush ing aligning the second reduction pinion teeth with the splined collar teeth The clutch collar MUST be installed with the chamfered edge toward the...

Page 51: ...ll the bearing carrier to the winch case Apply thread sealant to the capscrews and torque evenly to 75 lb ft 102 N m Using a pry bar or a screwdriver approximately 18 in 460 mm in length turn the thre...

Page 52: ...rew into the end of the countershaft pin 6 to serve as a handle Support the cluster gear 3 and remove the countershaft pin Thoroughly clean all parts and inspect for damage and wear The bearing roller...

Page 53: ...the inner case wall then fully install the countershaft pin Rotate the countershaft pin so that the slotted end is properly positioned to permit clutch shaft bearing carrier installation Install the...

Page 54: ...NG CARRIER COVER 1 15 BEARING CARRIER DRUM 1 16 SHIM SET 2 pair each 005 007 020 in 2 FERRULE 3 4 IN 19 mm WIRE ROPE 1 FERRULE 7 8 IN 22 mm WIRE ROPE 1 FERRULE 1 IN 25 mm WIRE ROPE 1 18 NO GASKET Use...

Page 55: ...ter bear ing carrier cover 14 and remove the cover Remove the 2nd reduction drum drive gear and shaft assembly 12 13 from the winch Remove the shift rail and freespool shift collar and yoke assembly f...

Page 56: ...the retaining ring 8 in the cable drum bore With a large screwdriver pry drum from side to side to check for end play of 005 010 in 13 25 mm Add or remove shims 16 as required while keeping the cable...

Page 57: ...ling the joystick control lever into full REEL IN then REEL OUT positions as a minimum of 5 times 2 Remove the filter and valve access cover from the RH side of the winch case 3 Remove the filter elem...

Page 58: ...EAD 1 3 UNION 1 4 ELBOW 1 15 20 5 PLUG HEX HD 5 5 5 7 6 ELBOW 2 5 5 7 7 CAP 1 8 PRESSURE SWITCH 1 5 5 7 9 STUD 1 10 NUT 2 11 RELIEF VALVE 1 25 35 12 SOLENOID VALVE C1 C2 F S 3 50 70 13 SOLENOID VALVE...

Page 59: ...ressure switch signaling the main pressure solenoid and is not adjustable 2 Place the control lever into the BRAKE OFF position and record the pressure When a winch function is selected the main press...

Page 60: ...tor stores oil at system pressure The pri mary function of the accumulator is to cushion pressure surges in the hydraulic system and aid in brake release and clutch application The accumulator also st...

Page 61: ...e tightened to 120 lb ft 163 N m torque 5 Lubricate tube and piston seals with winch lubricant Install an automotive type piston ring compressor around the piston making certain the step cut piston ri...

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