Komatsu 3D82AE, 3D84E, 3D88E Series Engine Manual

Table of Contents

1. General …………………………………………………………………………………………. 1
2. Inspection and Adjustment……………………………………………………………… 22
3. TROUBLESHOOTING…………………………………………………………………… 53
4. Disassembly, Inspection and Reassembly of Engines………………………… 59
5. LUBRICATION SYSTEM ……………………………………………………………… 108
6. COOLING SYSTEM………………………………………………………………………112
7. FUEL INJECTION PUMP/GOVERNOR……………………………………………114
8. TURBOCHAGER: Disassembly, inspection and reassembly…………………118
9. STARTING MOTOR…………………………………………………………………….. 140
10. ALTERNATOR…………………………………………………………………………… 176
11. ELECTRIC WIRING …………………………………………………………………… 180
12. SERVICE STANDARDS …………………………………………………………….. 185
13. TIGHTENING TORQUE for BOLTS and NUTS ……………………………… 196

Bleeding the fuel system
Bleed the fuel system according to the following procedures. When there is air in the fuel system, the fuel injection pump will not be able to function.
1) Check the fuel oil level in the fuel tank. Refuel if insufficient.
2) Open the cock of the water separator.
3) Loosen the air bleeding bolt on the water separator by turning 2~3 times to the counter-clockwise using screw driver or spanner.
4) When the fuel coming out is clear and not mixed with any bubble, tighten the air bleeding bolt.
5) Feed the fuel with the fuel priming pump or electro-magnetic fuel feed pump.
In case of the engine using the electro-magnetic fuel feed pump.
Turn the starter switch to the ON position and hold it in the position for 10~15 seconds to operate the fuel feed pump.
•In case of the engine installed the fuel filter mounting with the fuel priming pump.
The priming pump is on the top of the fuel filter mounting. Move the priming pump up and down