Westerbeke 12B TWO Operator'S Manual Download Page 1

Page: 1 / 82

Summary of Contents for 12B TWO

Page 1: ...OPERATOR S MANUAL WESTERBEKE 12B TWO MARINE DIESEL ENGINE Publication 37185 Edition One January 1988 v WESJ ERBEKE WESTERBEKE CORPORATION AVON INDUSTRIAL PARK AVON MA 02322 TEL 617 588 7700...

Page 2: ...and make sure the exhaust manifolds are securely attached and no warping exists Be sure the unit and its surroundings are well ventilated Use Extreme Care When Handling Engine Fuel A constant danger o...

Page 3: ...cturers with their own software and Westerbeke must depend on such software for the design 01 Westerbeke s own product software Such software however may be outdated and no longer accurate Routine cha...

Page 4: ...he factory in writing with Model information including the engine s serial number and commission date from WESlER8EKE CORPORA liON AVON INDUSTRIAL PARK AVON A 02322 fiI TI WESTERBEKE 7 _ CUSTOMER IDEN...

Page 5: ...FUEL SYSTEM 30 ELECTRICAL SySTEM 33 DC WIRING DIAGRAM 36467 SHOWING THE CAPTAINS PANEL WIRING 34 35 DC WIRING DIAGRAM 36844 SHOWING THE ADMIRALS PANEL WIRING 36 37 COOLING SySTEM 39 LUBRICATION SYSTEM...

Page 6: ...asoline in the fuel lines will damage components in the fuel lift pump assembly fuel injection pump and injectors The diesel engine does differ from the gasoline engine however in its handling and fir...

Page 7: ...O Exhaust Elbow Heat Exchanger Zinc Anode Gear Shift Lever Fuel Lift Pump Oil Pressure Swi Fresh Water Fill Cap Lube Oil Dipstick Fuel Injection Pump Fresh Water Lever Shut off Lever Oil Pressure Send...

Page 8: ...leed 0 Sea Water Pump DC Charging Alternator Lube Oil Drain Starter with Sol Westerbeke Diesel Engines DC Battery Ground Connection 6 Amp DC Circuit Breaker _Pretle t Solenoid gOO Exhaust Elbow eat Ex...

Page 9: ...oled vertical in line 12 hp at 3600 rpm maximum Mechanical centrifugal weight type Overhead Swirl chamber type 2 56 x 2 68 inches 65 x 68 mm 27 52 cubic inches 0 45 liters 1 2 Clockwise when viewed fr...

Page 10: ...lter Westerbeke Diesel Engines Open flow totally self bleeding No 2 diesel oil cetana rating of 45 or higher Nippondenso Bosch M type 25 OS BTDC Static Throttle type 2275 2 psi 160 kg cm 2 12 Volt DC...

Page 11: ...86 kglcm2 API specification CC or CD 12 Volt 35 A H negative ground recommended 45 A H cold areas 90 125 Ampere Hours 12 Volt sheathed type glow plug 12 Volt 1 2KW solenoid actuated shift 60 Amps at...

Page 12: ...and transmission are NOT filled with lubricating oil for ship ment Before leaving the factory however each engine with transmission is thoroughly tested with oil in it This testing among other things...

Page 13: ...ituations it may be necessary to lift the engine in positions other than the horizontal position Cer lain situations exist by which the engine must be lowered endwise through a small hatchway which ca...

Page 14: ...finally pushes against the engine s bolts and bed In fiberglass hulls we recommend that similar wooden stringers as in wooden hulls be formed fitted and then glassed securely to the hull This allows t...

Page 15: ...o reach its full rated RPM at full throttle while under a normal load and while it is moving the boat fOlWard through the water See pages 53 and 56 Alignment of the Engine The engine must be exactly a...

Page 16: ...eller coupling in each offour positions A while rotaled 900 be tween each position This test will also check whetherthe propeller s half coupling is in exact alignment on its shaft Then keeping the pr...

Page 17: ...ve the vessel water line An anti Siphon break should be installed when needed at the top of this loop The top of the loop should be placed high enough above the vessel s water line so as to remain abo...

Page 18: ...the other end of the tube with a 1 4 inch NPT National Pipe Tap pipe fitting Measure back pressure at the exhaust elbow when the en gine is running at 3600 rpm Dimension A cannot exceed 39 inches of...

Page 19: ...of the exhaust connected to the manifold which lay before the water injected exhaust system MUST be properly insulated to retain the exhaust heat within the exhaust pipe IWARNINGI Although diesel eng...

Page 20: ...visual type sea water strainer which will trap debris before it reaches the sea water pump and the heat ex changer and then be delivered to the pump Hoses routed from the thru hull fitting to the str...

Page 21: ...uel filter is installed on the engine between the mechanical fuel lift pump and the injection pump this filter has a replaceable filter element The fuel tank s fuel pickup tube should be clear and uno...

Page 22: ...protection Battery acid may splash on the skin or into the eyes inadvertent ly when removing electrolyte caps Check level and spec ic gravtty 01 battery electrolyte to ensure maximum engine starting e...

Page 23: ...level in the manifold Maintain this level 10 the base of the filler neck Once the engine reaches its operating temperature 170 1900 F ensure that there is coolant flow to the domestic water heaters wh...

Page 24: ...he result is a rapid start with less wear on the starter This system is common to Westerbeke Diesels The start circuitry is designed so that the PREHEAT button must be depressed for the time specified...

Page 25: ...y Switch provides power only to the instrument panel cluster Refer to the STOP PING PROCEDURE section of this manual page 28 2 PREHEAT The PREHEAT button activates the alternator s regulator the engin...

Page 26: ...ressure in pounds per square inch OIL PSI and a DC control circuit voltage gauge which measures the system s voltage VOLTS All gauges are illuminated when the key switch is turned ON and remain illumi...

Page 27: ...lectrical har ness The installer is also responsible for installing the buzzer in a dry location so that it will be audible to the operator should it sound while the engine is running The buzzer will...

Page 28: ...ntation for proper engine operation Ensure sea water discharge with exhaust discharge Should the engine not start when the START button is depressed for 10 to 12 seconds release both buttons and wait...

Page 29: ...for proper oil pressure and battery charging voltage Never attempt to engage the starter while the engine is running NOTE Some unstable running may occur in a cold engine but this condition should sm...

Page 30: ...tory upon the specific request order of the purchaser Engine Break In Procedures Although your engine has experienced a minimum of one hour of test operations to ensure accurate as sembly and proper o...

Page 31: ...s of excessive coolant loss the system must be refilled as outlined under the PREPARATION FOR STARTING section of this manual page 21 4 Check for oil and fuel leaks particularly if signs of such leaks...

Page 32: ...warranty HOSE FITTING INSTALLATION INSTRUCTIOHS 1 aotT SEDI ENII AIER IR P SECUR l TO A ACCESSIBLE SIRUtlURE SO PDSIlIONEO 111M R RECHTICLE TU cueH D AIMAH tAM BE PUUD UWO R IT 2 IF FUEL IS TO BE PIPE...

Page 33: ...sue the owner operator should keep this in mind Replacing the Fuel Filter Elements While it is unlikely that the operator will be forced to ser vice the system at sea the possibility does exist There...

Page 34: ...mpered with Idle speed and timing adjustment are the only adjustments the servicing dealer can perform on the injection pump Other types of adjustments or repairs must be performed by a qualified inje...

Page 35: ...5 Ampere hours minimum CAUTION When quick charging the battery with an external charger be sure to disconnect the battery cables from the battery Leaving the charging circutt connected while quick cha...

Page 36: ...p EcJ I c I l leur P E E T SCcU I It y BLU R L 7 PRESSlJRE I e ITCH r r _ RL V t __ I TT1 uS D 50Ht OOE_ tr 1 I I I 0 2l I I P ESSURE I JIL SENDER CllICUoT 1 OP O BREAKE 0 00 0 C i u f TARTE P U BLOC...

Page 37: ...A Io P GOES OUT RELEASE T E PR r I AT oIITCI1 THIS PROOUC 15 Pl IOTECTEO By A MANUAL SET CIRCUIT BREAK P lOChT t Nt THE START A EXCES lVE CURR l DAAIN WILL CAUSE BREhKE 10 TRoll AND T E ENGINE WILL SH...

Page 38: ...p til I _ 2 Y RED __ _1_ i IZ __ L _ l 1 USE D ON SOME MODELS 1 I I i a I 1 I 111 j7i1 FUEL SOLENOID i I OIL l USEDINSOME I I i PRESSURE I I MODELS i I I SENDER i I STARTER GROUND TO ENGINE BLOCK BAT...

Page 39: ...T DRAIN WilL CAUSE THE BREAKER TO TRIP AND THE ENGINE Will SHUT DOWN THE BUILDER OWNER MUST BE SURE THAT THE INSTRUMENT PANEL WIRING AND ENGINE ARE INSTALLED TO PREVENT CONTACT BETWEEN ELECTRICAL DEVI...

Page 40: ...Voltage Test 1 Using a voltmeter connect the voltmeter s red wire clip to the B output terminal on the alternator Refer to the schematic shown above 2 Connect the other wire clip to a ground on the e...

Page 41: ...ses through the thermostat into the exhaust manifold to the heat exchanger where it is cooled and then is returned to the engine block through the suction side of the fresh water circulating pump When...

Page 42: ...be easily monitored and where coolant can be easily added if needed see the figure below A stainless steel mounting bracket is supplied with each ktt along with a 3D inch length of clear plastic hose...

Page 43: ...engine and observe the coolant s expansion flow into the plastic recovery tank 6 Check for leaks between the pressure cap filler neck and then plastic recovery tank Stop the engine and allow it to coo...

Page 44: ...r replaced as required Spare anodes should be car ried on board Sea Water Pump The sea water pump is a sell priming belt driven rotary pump with a non ferrous housing and a neoprene impeller The impel...

Page 45: ...than 3 8 inch and no more than 1 2 inch 10 mm 12 mm as the belt is depressed with the thumb at the midpoint between the two pulleys on the longest span of the belt See the figure below A spare drive...

Page 46: ...need to order cooling system parts for your engine NOTE When the remote expansion tank 24177 is used the plastic coolant recovery tank should be removed and discarded and its connection point on the e...

Page 47: ...ion to the en gine so that the connecting hoses from the heater to the engine can run in a reasonably direct line without any loops which might trap air The connection made to the thermostat housing s...

Page 48: ...aluminum remote expansion tank must be installed in the circuit to become the highest point The remote expansion tank s part number is 24177 Install the remote expan sion tank in a convenient locatio...

Page 49: ...41 F 5 C 68 F 20 C 41 F 5 C or lower Viscostty SAE 30 or 1OW 3 SAE 20 or 1OW 3 SAE 10W 30 NOTE Do not use an engine lubricating oil wtth an SAE number greater than 30 in the engine Oil Pressure The e...

Page 50: ...ld be helpful in removing the old oil filter Place some paper towels and a plastic bag around the filter when unscrewing it to catch any all left in the filter Oil or any other fluid on the engine red...

Page 51: ...After refilling the oil run the engine for a few moments while checking the engine s oil pressure Ensure there is no leakage around the new oil filter or from the oil drain system and then stop the e...

Page 52: ...r if the transmission is proper ly stored DIPSTICK FIll PORT Lubrication The HBW 50 transmission is an immersion lubricated type Fill the transmission up to or near the top of the machined notch cut o...

Page 53: ...tch Do not overfill the transmission DO NOT screw the dipstick into this hole to check the transmission fluid level Screw the dipstick into this hole only after an accurate reading of the fluid s leve...

Page 54: ...es will wear prematurely and the transmission will eventually fail Minimum Travel Inner nole uSed 1 18 N 118 30mm 30mm i I 0 G D J 0 Ij CC TItto 7f J G5 ii j t I I I I Shllt Cable AttaChment Iram Rear...

Page 55: ...REVERSE to lock the propeller shaft Service If any seal on the transmission shows signs of leaking have the transmission looked at by a qualified Wester beke Dealer This problem especially concerning...

Page 56: ...ng of lubricating oil This fluid acts as a preservative providing reliable protection against corrosion for at least one year if the transmission is properly stored Lubrication The BW 3 transmission i...

Page 57: ...e pres sure can ruin the dipstick Make sure that the dipstick is properly inserted into the oil port before and while the engine is operating Alignment Misalignment between the transmission s coupling...

Page 58: ...ening of this cover s capscrews voids the transmission s warranty Sailing Operation The BW 3 transmission should be left in its NEUTRAL position while sailing Leaving the transmission in NEUTRAL while...

Page 59: ...r alternator excitation Probable Cause 1 Battery OFF 2 20 Amp circuit breaker is tripped 3 Loose battery cable connection 1 Faulty solenoid connections or switch 2 Faulty connection or tripped 10 Amp...

Page 60: ...linkage disconnected 58 verification Remedy 1 Check connection S at the starter solenoid for 12 volts with the switch depressed 2 Check SWitch with an ohmmeter 3 Twelve volts is present at the S term...

Page 61: ...for 12 volt and to see if it is pumping 3 Pump water ou1 of the bottom of the fuel tank s and change the fuel filters and bleed the fuel system 4 Check exhaust system for some type of blockage such a...

Page 62: ...eck for loose bells chafed or broken wires loose brackets and fittings damaged hoses loose clamps and other equipment not properly secured This check should include the propeller shaft coupling to the...

Page 63: ...ation 1 Replace the fuellilter elements in Ihe electric fuel lift pump and in the optional water sediment separator 2 Change the transmission s transmission fluid IT your engine is equipped with a HBW...

Page 64: ...OOD 455 psi 32 kg cm2 369 7 psi 26 kglcm2 Maximum difference between cylinders 35 5 psi 2 5 kg cm 2 3 Check the battery charging alternator for proper operation 4 Check the tightness of bolts nuts and...

Page 65: ...ence numbering shown Valve Clearance Adjustment NOTE Retorque the cylinder head bolts before adjusting the engine s valves 1 Remove the rocker arm cover 2 Position the No 1 piston at Top Dead Center T...

Page 66: ...o 2 piston at TOC of its compression stroke Now adjust the No 2 piston s intake and exhaust valves NOTE Adjust all valves to 0 0098 inches 0 25 mm with the engine cold ADJUST VALVES TO 8 8898 INCHES 8...

Page 67: ...holder and reattach the hight pressure fuel line to the delivery holder Attach it so that the end that would connect to the fuel injector is pointing away from the engine Fuel will flow from this lin...

Page 68: ...s by 0 004 inch 0 01 mm changes the injection timing by approximately one degree To advance the timing decrease the shim thick ness as required To retard the timing increase the shim thickness as requ...

Page 69: ...e hauled out of the water when not in use unless they have been dry for a considerable period of time Fresh Water Cooling System A 50 50 solution of antifreeze and fresh water is recommended for use i...

Page 70: ...r pump to draw fresh water through the system When the bucket is empty stop the engine and refill the bucket with an antifreeze solution slightly stronger than needed for winter freeze protection In y...

Page 71: ...er more compatible environment Recommissioning The recommissioning of your Westerbeke engine after a seasonal lay up generally follows the same proce dures as those presented in the PREPARATIONS FOR S...

Page 72: ...o flush the antifreeze fresh water solution from the sea water coolant sys tem When the engine is put Into operation the system will self flush in a short period of time with no ad verse affects 5 Sta...

Page 73: ...rade 5 capscrew 1 4 UNC 1 4 UNF 5 16 UNC 5 16 UNF 3 8 UNC 3 8 UNF 7 16 UNC 7 16 UNF 1 2 UNC 1 2 UNF Pitch 1 25 1 25 1 5 1 25 ISO 1 5 1 75 1 5 1 5 2 1 5 2 1 25 1 25 1 5 1 25 ISO 1 5 1 75 1 25 1 25 1 5...

Page 74: ...2 3 5 Flywheel bolt 47 0 50 6 6 5 7 0 Crankshaft pulley nut M24 108 5 144 7 15 20 Oil drain plug 36 2 43 4 5 0 6 0 Oil filter 7 9 9 4 1 1 1 3 or tighten firmly by hand Nozzle holder 36 2 43 4 5 0 6 0...

Page 75: ...ermined should be carried on board in ad dition to those listed above especially if the vessel is to be taken on long ocean voyages These parts are listed below 1 Fuel Injectors 2 Glow Plugs 3 Cooling...

Page 76: ...28 BW 3 TRANSMiSSiON 54 c Captains Panel 23 CAPTAINS PANEL DC WIRING DIAGRAM 38467 34 and 35 Change Engine Oil to include filter 48 Charging Voltage Test 38 CHECKS INSTALLATION 10 CirCUIT Fresh Water...

Page 77: ...nsing Installation Checks 18 Diesel Engine Understanding the 4 Diesel Fuel 30 DISCLAIMER PRODUCT SOFTWARE 1 Domestic Hot Water 45 Drain Oil Installation Checks 17 E Electrical System Installation Chec...

Page 78: ...7 H HARDWARE TIGHTENING TORQUES TABLE OF STANDARD 71 HBW 50 TRANSMISSION 50 Head Bolts Torquing Cylinder 63 Hot Water Domestic 45 INDEX 74 Injection Pump Fuel 32 Injection Pump Timing Adjustment 65 I...

Page 79: ...Panel Admirals 24 Panel Captains 23 PANELS DESCRIPTION OF INSTRUMENT _ 23 Parts Ordering 4 Parts Spare 73 PREPARATION FOR STARTING 21 Pressure Oil 47 Pressure Sensing Devices to Oil Galleries Connect...

Page 80: ...n 52 SOFTWARE DISCLAIMER PRODUCT 1 Spare Parts 73 Spares Lay up and Recommissioning 69 Specification Battery 33 SPECIFICATIONS GENERAL 7 Starter Motor Lay up and Recommissioning 68 STANDARD HARDWARE T...

Page 81: ...tions Starting 29 Understanding the Diesel Engine 4 v Valve Clearance Adjustment 63 Ventilation Installation Checks _ 20 Voltage Test Charging 38 W Water Circuit Fresh 39 Water Circuit Sea 42 Water Ci...

Page 82: ...YOUR NOTES...

Search results

Summary of Contents for 12B TWO

Reviews:

Related manuals for 12B TWO

Brands by name

Popular brands

Westerbeke 12B TWO, Operator'S Manual

Search results

Summary of Contents for 12B TWO

Reviews:

Related manuals for 12B TWO

Brands by name

Popular brands