Yanmar MP series Manual de servicio

TROUBLESHOOTING INTRODUCTION This section of the Service Manual includes troubleshooting procedures and troubleshooting charts used in the diagnosis o

TROUBLESHOOTING FUEL SYSTEM TROUBLESHOOTING CHART Use this troubleshooting chart to assist in the diagnosis of the fuel system prior to removing the f

TROUBLESHOOTING MP Pump Service Manual YAMMAR. Correction Fill with fuel. Disassemble and clean, or replace element. Find and repair source of debris

TROUBLESHOOTING VANMAR. MP Pump service Manual Correction Locate air leak using clear fuel line and repair. Disassemble and clean, or replace element.

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FUEL INJECTION PUMP 4. lnspect the pump housing (Figure 5-19, (1,2)). 5. lnspect the drive gear (Figure 5-20, (I)), rotor If the pump housing is worn,

FUEL INJECTION PUMP Hydraulic Head 1. Mark the positions of the fuel inlet (Figure 5-22, (1)) and return fittings (Figure 5-22, (2)) and remove. Figur

FUEL INJECTION PUMP IMPORTANT Do not use magnetized tools, as this may cause fuel pump components to become magnetized and attract metal debris. 5. Re

FUEL INJECTION PUMP Remove the charge pump fuel outlet strainer plug (Figure 5-29, (1)) and gasket (Figure 5-29, (2)). Do not remove the strainer. Rem

FUEL INJECTION PUMP 14. Remove the spring retainer (Figure 5-36, (I)), control sleeve (Figure 5-36, (2)) and plunger (Figure 5-36, (3)). 1. Spring ~et

- FUEL INJECTION PUMP Distribution Shaft. Camshaft and 3. Remove the roller lifter alignment pin Roller Lifter Removal 1. Remove the distribution shaf

FUEL INJECTION PUMP Remove the camshaft bearing retainer bolts and retainer (Figure 5-42, (1)). (MP4 Model Pump) Align the camshaft keyway (Figure 5-4

FUEL INJECTION PUMP 9. Remove the distribution shaft assembly (Figure 5-46). FUEL PUMP REASSEMBLY 0001210 Figure 5-46 Distribution Shaft and Camshaft

FUEL INJECTION PUMP 3. With the distribution shaft gear touching the 4. Install the camshaft bearing retainer and bolts pump body, insert the camshaf

FUEL INJECTION PUMP Gear Alignment Note: Verify model of fuel injection pump before proceeding 1. Rotate the camshaft to the correct angle (aligning

FUEL INJECTION PUMP Roller Lifter 1. lnstall the link lifter (Figure 5-51, (1)) and O-ring. 2. Install the roller lifter (Figure 5-51, (2)) with the g

FUEL INJECTION PUMP - -- -- - 3. Install the spring retainer (Figure 5-55, (1)). 00001217 1. Spring Retainer 2. Control Sleeve 3. Plunger Figure 5-5

FUEL INJECTION PUMP 7. Measure the rack (Figure 5-60, (4)) movement, 9. Install the rack return spring (Figure 5-61, (1)). the range of rack motion s

FUEL INJECTION PUMP 0001213 1. Spring Retainer 2. Spring Compressor Tool 3. Hydraulic Head Figure 5-631 11. Install the distribution shaft coupler (

FUEL INJECTION PUMP Plunger (Bottom Clearance) Measurement The MP fuel pump injection timing is set by adjusting the plunger height. This is accomplis

FUEL INJECTION PUMP Hydraulic Head and Valve(s) Reassembly 1. Set the camshaft to the correct angle as used during the gear alignment. 2. Lubricate t

FUEL INJECTION PUMP 8. lnstall the accumulator piston (Figure 5-73, (6)) and check that it moves freely. lnstall the spring (Figure 5-73, (5)), seal (

FUEL INJECTION PUMP 12. Install a new O-ring (Figure 5-76, (2)) on the Charge Pump thermo-element (Figure 5-76, (1)) and tighten Note: If charge pump

FUEL INJECTION PUMP 4. Install the charge pump (Figure 5-80, (1)) and 2. Attach a stop to the camshaft. Tighten the tighten the four mount screws (Fi

FUEL INJECTION PUMP 4. Turn the link lifter plate counterclockwise to the 6 o'clock position and install the governor assembly and link into the

FUEL INJECTION PUMP 10. Tighten the link lifter retainer bolt 12. Install a new O-ring (Figure 5-89, (1)) to the (Figure 5-87, (1)) to 6- 7 ft-lb (8 -

FUEL INJECTION PUMP 16. Install a new governor housing cover gasket I (Figure 5-91). 0001307a Figure 5-91 17. Install the governor housing cover to th

Section 6 ADJUSTMENT Page Introduction ... 6-3 Setup and Inspection ...

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ADJUSTMENT INTRODUCTION This section of the Service Manual describes the adjustment procedures necessary to setup and adjust the fuel injection pump a

ADJUSTMENT ADJUSTMENT The adjustment of fuel delivery requires correct specifications. Before performing any of the adjustments in this section, obtai

Torque Fuel Delivery Torque fuel delivery adjustment requires adjustment of the fuel limiter torque spring (Figure 6-7, (3)) or angleich, when applica

ADJUSTMENT 5. Recheck the rated fuel delivery. (3) 000 1324 1. Governor Rear 3. Governor Tension Cover Lever 2. Reverse Angleich 4. Reverse Angleich

ADJUSTMENT Note: There are a few turbo charged engines that incorporate a boost compensator on the governor assembly. Additional calibration data, pr

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Section 7 FUEL INJECTION NOZZLE Page Introduction ... 7-2 Specifica

FUEL INJECTION NOZZLE INTRODUCTION This section of the Service Manual describes the operation and procedures necessary to disassemble and reassemble t

FUEL INJECTION NOZZLE NOZZLE BODY IDENTIFICATION NUMBER The type of nozzle can be determined from the identification number (Figure 7-1, (1)) inscribe

FUEL INJECTION NOZZLE SPECIAL TORQUE CHART Component I Tightening Torque Lubricating Oil Application I (Thread Portion and Seat Surface) I I SPECIAL S

FUEL INJECTION NOZZLE FUEL INJECTION NOZZLE Operation High pressure fuel from the fuel injection pump flows through the high pressure pipe into the oi

FUEL INJECTION NOZZLE Disassembly Note: Keep all parts in order by cylinder during disassembly and reinstall all small parts to their mating part as

FUEL INJECTION NOZZLE I Cleaning Note: Before inspecting or assembling, all components must be washed with clean diesel fuel or standard cleaning sol

FUEL INJECTION NOZZLE Reassembly The fuel injection nozzle is assembled in the reverse order of disassembly. 1. Insert the adjusting shims, spring an

FUEL INJECTION NOZZLE 3. Replace the nozzle assembly after all checks above if: Leakage is evident. Spray angle is incorrect. Atomization of fuel is i

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Section 8 TROUBLESHOOTING Page Introduction ..................... 8-2 Troubleshooting