Volvo Penta D25A MS Operator's Manual
Volvo Penta D25A MS Operator's Manual

Volvo Penta D25A MS Operator's Manual

Volvo penta d25a ms/mt; d30a ms/mt diesel engine
Table of Contents

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OPERATOR'S MANUAL
D25A MS/MT
D30A MS/MT
Plus d'informations sur : www.dbmoteurs.fr

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Summary of Contents for Volvo Penta D25A MS

  • Page 1 OPERATOR’S MANUAL D25A MS/MT D30A MS/MT Plus d'informations sur : www.dbmoteurs.fr...
  • Page 2 CALIFORNIA Proposition 65 Warning Diesel engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects, and other reproductive harm. Plus d'informations sur : www.dbmoteurs.fr...
  • Page 3: Foreword

    Foreword Thank you for purchasing this Volvo Penta diesel engine. This manual contains operation instructions and maintenance and inspection information. In or- der to ensure safety and bring out the maximum performance of the engine, do not operate the engine until you have read and fully understood the contents of this manual. Do not hesitate to consult your Volvo Penta dealer.
  • Page 4: Table Of Contents

    Contents Foreword ..............3 Stopping ..............28 Manual Stop Lever ..........28 Safety Information ........... 6 Safety regulations during engine operation ..... 7 After stopping ............29 Safety directions for maintenance and service ..8 General ..............29 Warning labels D25A / D30A MS ......10 Anti-freezing measures ........
  • Page 5 Return the engine to service ........ 67 Storage of Engine in operating condition ....68 Troubleshooting ............. 69 Technical Data ............70 D25A MS ............. 70 D25A MT ............. 71 D30A MS ............. 72 D30A MT ............. 73 Fuel specification ..........74 Lubrication oil specification ........
  • Page 6: Safety Information

    Make sure you are in possession of the right operator’s manual before reading on. If this is not the case, please get in touch with your Volvo Penta dealer. If operations are performed incorrectly it could result in personal injury or damage to property or the engi- ne.
  • Page 7: Safety Regulations During Engine Operation

    Get shifting. There is a risk of the passengers falling down in touch with your Volvo Penta dealer for help in ob- or falling overboard. A rotating propeller can cause se- taining the best solution for your vessel.
  • Page 8: Safety Directions For Maintenance And Service

    More detailed service literature is avail- ger can cause severe personal injury. able from your Volvo Penta dealer. Never perform a There is also a risk of foreign objects being drawn in task unless you are absolutely sure how it is to be and causing mechanical damage.
  • Page 9: Cooling System

    Safety information Always cover any electric component if it is located Hot surfaces and fluids under the fuel filter. Otherwise it might be damaged by At operating temperature, the engine and its compo- fuel spills. nents are hot. A hot engine always involves risk for burn injuries.
  • Page 10: Warning Labels D25A / D30A Ms

    Safety information Warning labels D25A / D30A MS The engine carries ‘Warning Labels’ at places where you are required to pay special attention. Please read them carefully and make sure you understand the content of each label and the meaning of their position. Make sure the labels are legible.
  • Page 11: Warning Labels D25A / D30A Mt

    Safety information Warning labels D25A / D30A MT The engine carries ‘Warning Labels’ at places where you are required to pay special attention. Please read them carefully and make sure you understand the content of each label and the meaning of their position. Make sure the labels are legible.
  • Page 12: Introduction

    Introduction This operator’s manual has been produced to give you the greatest benefit of your Volvo Penta marine engine. It contains the information necessary to handle and maintain your engine in a safe and correct manner. We would like you to read this operator’s manual thoroughly and learn how to handle the engine, controls and other equip- ment in a safe manner before starting to operate the engine.
  • Page 13: Certified Engines

    Warranty and Service Book. Note that AB Volvo Penta’s responsibility is limited to what is specified in the Warranty and Service Book. Read it carefully as soon as possible after delivery. It contains important information concerning the warranty card, servi- ce, maintenance and what the owner is responsible to be aware of, check and perform.
  • Page 14: Presentation

    Presentation D25A/D30A MS The D25A and D30A are in-line, direct injection, 6-cylinder, 4-stroke marine diesel engines. They are equipped with turbocharger and fitted with either a heat exchanger for thermostat-regulated freshwater cooling or connec- tions for keel cooling. An optimal combination of combustion chambers, fuel injection system, effective turbocharger and charge air cooling, provide excellent fuel consumption over the whole range of engine speeds where the engine is economi- cal in operation.
  • Page 15: D25A/D30A Mt

    Presentation D25A/D30A MT The D25A and D30A are in-line, direct injection, 6-cylinder, 4-stroke marine diesel engines. They are equipped with turbocharger and fitted with either a heat exchanger for thermostat-regulated freshwater cooling or connec- tions for keel cooling. An optimal combination of combustion chambers, fuel injection system, effective turbocharger and charge air cooling, provide excellent fuel consumption over the whole range of engine speeds where the engine is economi- cal in operation.
  • Page 16: New Engine Initial Service

    New Engine Initial service General Before starting a new or reconditioned engine for the first time, give it an initial inspection. This to guarantee your own safety as well as the maximum service life of the engine. External Inspection Electrical Wiring 1.
  • Page 17: Starting

    Starting Before starting WARNING! Before starting the engine make sure that neither people, nor tools, are in contact with moving parts of the engine. Notify the people in the vicinity of the engine when starting it. WARNING! Make sure that you know how to stop the engine before you start it (in case of emergency). If you are starting the engine for the first time, have someone stand-by at the emergency stop lever to stop the engine in case abnormal noise occurs during start up.
  • Page 18: Standard Control System

    Standard control system This chapter describes the standard Volvo Penta instruments that are available for your engine. Note that that tachometer, oil gauge, temperature gauge, charge gauge, starting switch, etc., that are shown here as panel mounted, in some cases may be mounted separately.
  • Page 19: Warning Displays

    Standard Control System Warning displays If the acoustic alarm sounds, one of the warning dis- play lamps will immediately start to flash to indicate the cause of the alarm. 1. Coolant temperature too high. 2. Lubricant pressure too low. 3. Generator not charging After an alarm Press the “Alarm test”...
  • Page 20: Starting Procedure

    Standard Control System Starting procedure 1. Disengage the reverse gear and make sure the turning gear is not engaged. Put the control lever into neutral and idle on all control positions WARNING! If the vessel is equipped with controls that allow starting the engine in gear, it is essential to check all control positions to make sure a gear is not engaged.
  • Page 21: Operation

    Standard Control System Operation Learn how to handle the engine, controls and other equipment in a safe and correct manner before taking it into operation. Check the instruments Check the instruments and warning display directly after start and regularly during operation. Oil pressure During operation, the oil pressure gauge should show a rea- ding of 0,50 - 0,64 MPa (71 - 93 psi).
  • Page 22: Alarms And Fault Indication

    Standard Control System Alarms and fault indication If the acoustic alarm sounds, one of the warning dis- play lamps will immediately start to flash to indicate the cause of the alarm: High coolant temperature (1), low oil pressure (2) and no charge voltage (3). IMPORTANT! Stop the engine immediately after an alarm for low oil pressure.
  • Page 23: Operation

    Operation General Learn how to handle the engine, controls and other equipment in a safe and correct manner before starting the engine WARNING! Stay clear of all rotating and moving WARNING! At operating temperature, the engine parts during operation. and its components are hot. A hot engine always involves risk for burn injuries.
  • Page 24: Applying Load

    Operation Applying Load Manoeuvring When the engine has reached operation temperature, The marine gear must be engaged at low idling speed. bring the engine to operating speed and apply the load There must be a brief pause after engaging gear befo- gradually.
  • Page 25: Manual Speed Control

    Operation Manual speed control Manual speed adjustment of the engine can be done using the manual speed control knob. 1. Disconnect the control cable connected to the remote speed adjustment. 2. Turn the Lock counterclockwise to unlock the ma- nual speed adjustment knob. 3.
  • Page 26 Operation 4. Fine-tuning of the engine speed can be done by turning the control knob: Turn the knob clockwise to decrease engine speed. Turn it counterclockwise to increase engine speed. 5. Bring the manual speed control knob in the neutral position when ready with the manual speed adjustment.
  • Page 27: Start Using Auxiliary Batteries

    Operation Start using auxiliary batteries WARNING! Ventilate well. Batteries generate oxyhydrogen gas, which is extremely flammable and explosive. A short circuit, naked flame or spark can cause a powerful explosion. Never reverse the polarity of the battery. Risk of sparks and explosion. 1.
  • Page 28: Stopping

    Stopping Let the engine run at low idling speed (in neutral) for at least 5 to 6 minutes before turning it off. This will keep the engine temperature in balance and prevent it from boiling. IMPORTANT! The procedure described above IMPORTANT! If the engine stops abnormally, is especially important if the engine has been try to locate the problem and make the...
  • Page 29: After Stopping

    After stopping General * Check the engine and engine room for leaks. * Close the fuel cock and seawater cock. IMPORTANT! Do not forget to open the cocks before starting the engine again. * Read off the hour counter and carry out preventive maintenance according to the maintenance schedule. * Turn off the main switch if the engine is not to be used for a long period.
  • Page 30: Maintenance

    Volvo Penta recommends that accurate maintenance records are kept. With accurate maintenance records your Volvo Penta Dealer can help in fine tuning the recommended service intervals to meet the specific operating situ- ation. This should result in a lower engine operation cost.
  • Page 31: Maintnenance Schedule D25A/D30A Ms

    MAINTENANCE SCHEDULE D25A/D30A MS Daily before first start * General inspection engine and engine room * Check and make sure all valves are in the right position * Check lubrication oil level * Check marine gear oil level * Check lubrication oil filter differential pressure indicator * Check air-filter differential pressure indicator * Check coolant level * Check fuel oil level...
  • Page 32 Maintenance schedule Every 250 operating hours or every 12 months * Change lubrication oil. Longer interval requires oil analysis * Change full flow and by-pass lubrication oil filters * Check/adjust V-belts * Check sea water filter * Check/wash air pre-cleaner (turbo) Every 500 operating hours or every 12 months * Change governor lubrication oil filter Every 1000 operating hours or every 12 months...
  • Page 33 Maintenance schedule Every 4000 to 6000 operating hours or every 24 months * Full service inspection Every 12 months * Check rubber engine mounts * Check rubber hoses and flex connections * Check engine room ventilation fans Every 10000 operating hours * Check torsional vibration damper temp check * Check rubber of flexible coupling for deformation and cracks * Replace ball-joints in fuel pump control linkage...
  • Page 34: Maintnenance Schedule D25A/D30A Mt

    Maintenance schedule MAINTENANCE SCHEDULE D25A/D30A MT Daily before first start * General inspection engine and engine room. * Check and make sure all valves are in the right position * Check lubrication oil level * Check marine gear oil level * Check lubrication oil filter differential pressure indicator * Check air-filter differential pressure indicator * Check coolant level...
  • Page 35 Maintenance schedule Every 250 operating hours or every 12 months * Change lubrication oil. Longer interval requires oil analysis * Change full flow and by-pass lubrication oil filters * Check/adjust V-belts * Check sea water filter * Check/wash air pre-cleaner (turbo) Every 500 operating hours or every 12 months * Change governor lubrication oil filter Every 1000 operating hours or every 12 months...
  • Page 36 Maintenance schedule Every 4000 to 6000 operating hours or every 24 months * Full service inspection Every 12 months * Check rubber engine mounts * Check rubber hoses and flex connections * Check engine room ventilation fans Every 10000 operating hours * Check torsional vibration damper temp check * Check rubber of flexible coupling for deformation and cracks * Replace ball-joints in fuel pump control linkage...
  • Page 37: Overhaul Information

    Maintenance schedule Overhaul information Top overhaul Dependent of your application, working conditions and service level a “top overhaul” might be required in case of: Gas leakage through valves Too much valve clearance Low compression pressure Top overhaul includes: Remove cylinder heads and check liners and com- Change fresh water pump seals bustion chambers of pistons Change sea water pump seals...
  • Page 38 Maintenance schedule major overhaul Disassemble engine, clean, check and change major parts. Major parts: Inlet and exhaust valve seats Cylinder liners Inlet and exhaust valves Main bearing cap bolts and washers Valve rotators Piston rings Valve cotters Connecting rod bearings Rocker arm adjusting screws Vibration damper Valve push rods...
  • Page 39: Recommendation Of Daily Operation Records

    Maintenance: General Recommendation of Daily Operation Records Daily recording is a preventive maintenance program and when comparing values with engine history it will help you recognize conditions, signs or indications of approaching trouble. Daily operation records also make trouble shooting easier and will lessen the down time (to save time and money for servicing). Items to be recorded The following items are recommended to be recorded once a day:...
  • Page 40: Engine

    Maintenance: Engine Engine Valve Clearance IMPORTANT! Check and adjust the valve clearance when the engine is cold and not running. NOTE! Protective plugs should be fitted on the injectors. Cleanliness should be observed when working on the fuel system When adjusting the valves the engine should be cold. The engine must under no circumstances be running, sin- ce the valves can knock against the pistons and cause serious damage.
  • Page 41: Firing Order

    Maintenance: Engine Valve clearance inspection 1. Check the valve clearance with feeler gauges in- serted between the rocker arm and yoke cap. Valve Clearance: Inlet valve ........0.6 mm [ 0.024 in.] Exhaust valve ......0.8 mm [ 0.031 in.] 2.
  • Page 42: Vibration Damper Inspection

    Maintenance: Engine Vibration Damper Inspection NOTE! When installing a damper protective cover to the engine, do not use a cover enclosing the damper. Visually check for fluid leaks, flaws, distortion, or dis- coloration or flaking of painted surfaces. Also check for swelling (by measuring with a scale), and fluid le- aks past staked portions.
  • Page 43: How To Use The Turning Gear

    Maintenance: Engine How to use the Turning Gear 1. Loosen the two bolts securing the shaft lock plate and remove the plate from the shaft (groove). 2. Push in the shaft all the way to the TURN posi- tion. 3. Put a socket to the hexagonal end of the shaft and turn the shaft with a ratchet handle for tur- ning.
  • Page 44: Fuel System

    Maintenance: Fuel System Fuel system Fuel system bleeding Prime the fuel filters and fuel injection pump in the following sequence: Bleeding the fuel filter 1. Put the fuel filter switching cock in the left filter bleed position and loosen the left air vent plug. 2.
  • Page 45 Maintenance: Fuel System Bleeding the fuel injection pump 1. Loosen the air vent cock on the fuel injection pump about 1.5 turns. 2. Move the priming pump cap up and down to start the flow of fuel through the system. 3.
  • Page 46: Fuel Filter Change

    Maintenance: Fuel System Fuel filter change Switchable fuel filters can be changed while the engine is running as the flow of fuel can be cut off to one filter at a time. WARNING! Working on or approaching a running engine is a safety hazard. Beware of rotating parts and hot surfaces.
  • Page 47: Fuel Tank Drain

    Maintenance: Fuel System Fuel injector nozzle change IMPORTANT! Cover all open fuel injection pipes, fuel intake openings and the fuel injectior nozzle to keep dirt out Remove the fuel injector 1. Remove the rocker cover. 2. Remove the clamp from the fuel injection pipe. 3.
  • Page 48: Fuel Injection Pressure

    Maintenance: Fuel System Install the nozzle 1. Install the nozzle according to the pin on the nozzle. 2. Tighten the retaining nut by applying the specified torque 177 to 196 Nm (18 to 20kpm) [130 to 145 lbf.ft]. (Apply oil to the nut.) IMPORTANT! Do not use Moly Disulfide.
  • Page 49 Maintenance: Fuel System Fuel injection nozzle spray pattern Check spray conditions when checking fuel injection pressure. Good spray conditions are as follows: · Fuel is injected from all nozzle holes. · The fuel is sprayed in a conical shape. · No big particles but fine ones.
  • Page 50: Injection Timing Inspection

    Maintenance: Fuel System Injection timing inspection The injection timing is indicated on the caution plate attached to the No. 1 rocker cover. Check it before inspection. Bring the piston for No. 1 cylinder to top dead center on compression stroke as follows: 1.
  • Page 51: Fuel Control

    Maintenance: Fuel System Fuel control Fuel control link joints inspection Check the ball joints for play. If there is more than 0.1 mm [0.004in.] play, replace the ball joints with new ones. WARNING! In case of a control link having ball joints that is an integral part of the link, change the link as an assembly.
  • Page 52: Twin Fuel Pre-Filter/Water Separator

    Maintenance: Fuel System Twin fuel pre-filter/water separator WARNING! Working on or approaching a running engine is a safety hazard. Beware of rotating parts and hot surfaces. The dual filter is equipped with a pressure gauge (1) indicating when it is time to change the filter insert. The filter inserts must be changed according to the maintenance schedule recommendations or earlier if the pressure gauge indicates a vacuum of 6–10 inHg...
  • Page 53 Maintenance: Fuel System Close the fuel cocks on the tank or cut off the flow of fuel with the knob (1) for the filter insert to change if running. WARNING! Working on or approaching a running engine is a safety hazard. Beware of rotating parts and hot surfaces.
  • Page 54: Lubrication System

    Maintenance: Lubrication system Lubrication system Lubrication oil level check The oil level must be within the marked range on the dipstick and must be checked daily. IMPORTANT! The level must never be allowed to drop beneath the minimum or rise above the maximum mark on the dipstick.
  • Page 55 Maintenance: Lubrication system Filling oil in new or reconditioned engine If your engine is new or reconditioned you should besides the actual filling of new lubrication oil also do the following: 1. Remove the rocker cover. Lubricate the valve mechanism and fill the camshaft oil bath from the cylinder head.
  • Page 56: Lubrication Oil Change

    Maintenance: Lubrication system Lubrication oil change Always observe the recommended oil change inter- val. IMPORTANT! Only use recommended grades of oil (see chapter technical data). 1. Warm up the engine (this makes it easier to suck the oil up from the sump). Then stop the engine. WARNING! Hot oil and hot surfaces may cause burns.
  • Page 57: Oil Filter Change

    Maintenance: Lubrication system Oil filter change The oil filters can be changed while the engine is run- ning as the oil flow can be directed through one filter at a time. 1. Remove the cover from the filter switch valve by disconnecting the two bolts.
  • Page 58: Lubrication Oil By-Pass Filter Change

    Maintenance: Lubrication system Lubrication oil by-pass filter change 1. Stop the engine 2. Unscrew the oil filter using a special filter wrench. Note! Place a container beneath the filter when remo- ving to avoid oil spill. Warning! Hot oil can cause burns. 3.
  • Page 59: Freshwater System

    Maintenance: Freshwater system Freshwater system The Freshwater system is the internal cooling system. It is a closed system and must be filled with a coolant that protects the engine from internal corrosion and freezing. Anti-corrosive additives become less efficient with age and the coolant must therefore be changed in accordance with the recommendations in the maintenance sche- dule.
  • Page 60: Coolant Filling

    Maintenance: Freshwater system Coolant filling Topping up Fill the freshwater system with coolant to the correct level through the filler opening in the expansion tank, for correct level, refer to section “coolant level check”. Fill slowly so that evacuated air is able to pass the fil- ler opening.
  • Page 61: Freshwater System Flushing

    Maintenance: Freshwater system Freshwater system flushing The system should be flushed before changing coo- lant to avoid inferior cooling performance due to de- posits in the cooling system. 1. Drain the coolant as described earlier. 2. Insert a hose into the filler opening in the heat ex- changer and flush with fresh water.
  • Page 62: Seawater System

    Maintenance: Seawater system Seawater system The seawater system is the engine’s external cooling system. It cools the internal cooling system in an engine mounted or externally mounted heat exchanger. The system is protected against galvanic corrosion by zinc ano- des located in the heat exchanger. WARNING! The seawater cocks and/or the cocks of the external cooling system must be closed before commencing work on the seawater system.
  • Page 63: Seawater Pump Impeller Check/Hange

    Seawater pump impeller check/ hange IMPORTANT! Always keep a spare impeller and gasket in store. 1. Drain the external cooling water as described in the chapter draining the seawater system. 2. Remove the pump end cover and the impeller. 3. Inspect the impeller. Change the impeller if there are any visible cracks or other defects.
  • Page 64: Air Inlet And Exhaust Systems

    Maintenance: Air Inlet and Exhaust system Air Inlet and Exhaust Systems Turbocharger Inspection WARNING! Check the turbocharger only when the engine is cool and the compressor wheel is not running. Check shaft play, take a hold of the compressor wheel nut and turn the wheel to feel rattle and listen for abnormal noise.
  • Page 65: Wash The Air Filter

    Maintenance: Air Inlet and Exhaust system Wash the air filter Remove dust from air filter on the suction side of the turbocharger silencer . Be sure to keep the air filter clean to ensure optimum engine performance. 1. Remove the air filter from the silencer, and hand- wash with a mild detergent.
  • Page 66: Electrical System

    Maintenance: Electrical system Electrical system Protective Devices Inspection Make sure that the instruments and the alarm func- tions of the engine control system work properly. Check the electrical wiring Check for loose or damaged electrical cables. Dama- ged Gables must be replaced. Starter motor inspection 1.
  • Page 67: Inhibiting

    Before taking the engine out of service for long periods, it should be checked by a Volvo Penta dealer for possible needed overhaul or repaire of the engine and other equip- ment.
  • Page 68: Storage Of Engine In Operating Condition

    Inhibiting Storage of Engine in Operating Condition Service the engine once a month in the following manner: 1. Crank the engine two times, for 10 seconds each time, with the starter at intervals of 30 seconds, with the fuel supply shut off. 2.
  • Page 69: Troubleshooting

    A number of symptoms and possible causes for engine disturbances are described in the table below. If faults or hitches arise that you cannot solve alone, you must always get in touch with your Volvo Penta dealer. NOTE! Dust and foreign particles are the most common cause of excessive wear of parts. When disassembling a component, take measures to prevent dust and foreign particles from entering it.
  • Page 70: Technical Data

    Technical Data D25A MS General Type designation D25A-MS Number of cylinders ..........Displacement ............24,51 liters (1496 in Nominal idling speed ..........not available Low idling speed ............ 625 ±25 rpm High idling speed ........... not available[rating 1] not available[rating 2] Valve clearance* ...........
  • Page 71: D25A Mt

    Technical Data D25A MT General Type designation D25A-MT Number of cylinders ..........Displacement ............24,51 liters (1496 in Nominal idling speed ..........not available Low idling speed ............ 625 ±25 rpm High idling speed ........... not available[rating 1] not available[rating 2] Valve clearance* ...........
  • Page 72: D30A Ms

    Technical Data D30A MS General Type designation D30A-MS Number of cylinders ..........Displacement ............29,96 liters (1828 in Nominal idling speed ..........not available Low idling speed ............ 625 ±25 rpm High idling speed ........... not available[rating 1] not available[rating 2] Valve clearance* ...........
  • Page 73: D30A Mt

    Technical Data D30A MT General Type designation D30A-MT Number of cylinders ..........Displacement ............29,96 liters (1828 in Nominal idling speed ..........not available Low idling speed ............ 625 ±25 rpm High idling speed ........... not available[rating 1] not available[rating 2] Valve clearance* ...........
  • Page 74: Fuel Specification

    Standard Control System Fuel specification Fuel must comply with national and international standards at the least, e.g.: JIS KK 2204......Type1, Type2, Type3 ASTM, D975 ........No.1-D, No.2-D BS2869 ........Class-A1, Class-A2 DIN51601 ..........Diesel-Fuel ISO8217 ..........DMX-Class Note! It is necessary to use a fuel that has a pour point suitable for ambient temperature during the operation of the engine.
  • Page 75: Lubrication Oil Specification

    Technical Data Lubrication oil specification Recommended types of engine oil Use lubrication oil that meets Class CF standard (recommended engine oil). Class CE and CF-4 engine oils are designed for diesel fuel with a sulfur content of less than 0,5% and less than 0,2%, respectively. Since the sulfur content of most Class-A diesel fuel exceeds 0,5%, do not use class CE or CF-4 engine oil when using class-A diesel fuel Important! Use of improper or inferior oil can cause excessive wear of bearings and moving parts,...
  • Page 76: Coolant Specification

    The mixture of Volvo Penta Coolant and water should contain 40-55% Volvo Penta Coolant. If the coolant con- tains less than 40% Volvo Penta Coolant, the cooling galleries in the engine or radiator may be blocked by con- tamination. If the coolant contains more than 60% Volvo Penta Coolant the cooling ability of the coolant mixture is impaired, this may cause the engine to overheat.
  • Page 77: Tightening Torque Tables

    Tightening Torque Tables Important Bolts and Nuts D25 Thread Torque Description Diam.xPitch lbf.ft Notes (M-Thread) Cylinder Head 22 x 2,5 (a) (b) (c) Cylinder head nozzle gland (studs) 14 x 2,0 69-78 51-58 Rocker case 12 x 1,25 Rocker shaft 14 x 2,0 Rocker arm lock nuts 12 x 1,25...
  • Page 78 Technical Data Sea water pump cam (screw) 10 x 1,25 15,7-21,6 1,6-2,2 11,6-15,9 Sea water pump casing 8 x 1,25 7,4-9,8 0,75-1,0 5,42-7,23 Sea water pump cover 8 x 1,25 7,4-9,8 0,75-1,0 5,42-7,23 Sea water pump drive gear (nut) 24 x 2,0 191-201 19,5-20,5 141-148...
  • Page 79 Technical Data Important Bolts and Nuts D30 Thread Torque Description Diam.xPitch lbf.ft Notes (M-Thread) Cylinder Head 22 x 2,5 (a)(b)(c) Cylinder head nozzle gland (studs) 14 x 2,0 69-78 51-58 Rocker case 12 x 1,25 Rocker shaft 14 x 2,0 Rocker arm lock nuts 12 x 1,25 Bridge lock nuts...
  • Page 80 Technical Data Sea water pump cam (screw) 10 x 1,25 15,7-21,6 1,6-2,2 11,6-15,9 Sea water pump casing 8 x 1,25 7,4-9,8 0,75-1,0 5,42-7,23 Sea water pump cover 8 x 1,25 7,4-9,8 0,75-1,0 5,42-7,23 Sea water pump drive gear (nut) 24 x 2,0 191-201 19,5-20,5 141-148...
  • Page 81: Standard Bolts And Nuts

    Technical Data Standard Bolts and Nuts Fine threads Thread Strength classification diameter x pitch 10.9 mm [in.] lbf.ft lbf.ft M10 x 1,25 [0.39 x 0.049] M12 x 1,25 [0.47 x 0.049] 11,0 M14 x 1,5 [0.55 x 0.059] 17,9 M16 x 1,5 [0.63 x 0.059] 14,8 26,7 M18 x 1,5 [0.71 x 0.059]...
  • Page 82: Standard Union Nuts

    Technical Data Standard union nuts Cap nut size Strength classification Nominal diameter x pitch diameter mm [in.] lbf.ft M14 x 1,5 [0.55 x 0.059] M16 x 1,5 [0.63 x 0.059] M20 x 1,5 [0.79 x 0.059] M22 x 1,5 [0.87 x 0.059] M27 x 1,5 [1.06 x 0.059] M30 x 1,5 [1.18 x 0.059] M30 x 1,5 [1.18 x 0.059]...
  • Page 83: Identification Numbers D25A / D30A

    Technical Data Identification numbers D25A / D30A Type plates with identification numbers can be found on the engine and the transmission or generator. This infor- mation must always be used as a reference when ordering service and spare parts. Engine ............................Product designation ........................
  • Page 84: Sea Trial Data

    Sea trial data Date ................. Name ............... Vessel ..............Engine no..............Miscellaneuos Engine speed ..............................rpm Vessel speed ..............................knots Ambient/eng. room temp..........................Sea water temp..............................Eng. cooling water out ............................Cooler in ................................Cooler out ................................. Eng.
  • Page 85 Notes ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................Plus d'informations sur : www.dbmoteurs.fr...
  • Page 86 Notes ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................Plus d'informations sur : www.dbmoteurs.fr...
  • Page 87 Plus d'informations sur : www.dbmoteurs.fr...

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