Fuel Injection Pump; Battery; Air Removal Of Fuel System; Fuel Supply Pump - Doosan PU158TI Operation & Maintenance Manual

Generator diesel engine, power unit diesel engine
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2.2.28. Fuel injection pump

Check the housing crack, damage etc. and replace it if abnormal.
Check if the idle operation and speed regulating lever's sealing is removed.
The adjustment and testing of fuel injection pump should necessarily be done at the test bench.

2.2.29. Battery

Inspect for any leakage of electrolytic solution owing to battery crack, and replace the battery in
case of poor condition.
Inspect for amount of electrolytic solution, and replenish if insufficient.
Measure the gravity of electrolytic solution, if less than specified value (1.12 ~ 1.28), replenish.

2.2.30. Air removal of fuel system

The suction room of fuel injection pump has the function of air removal continuously during the
operation through a relief valve.
Iin case that the suction room lacks fuel at all, for instance, in case of new installation of injection
pump, after loosening the air removing screws of cartridge filter respectively, remove the air by
operating the manual pump of fuel supply pump until bubble will disappear.

2.2.31. Fuel supply pump

Every time of engine oil replacement, the fuel strainer installed at the fuel supply pump should be
removed and cleaned.
2.2.32. Supercharger
The supercharger needs not arty special equipment
Every time of engine replacement, a leakage or clogging of oil pipes should be inspected. Air cleaner
should be maintained carefully for nut or foreign material not to get in. Periodic inspection should be
applied on the compressed air and exhaust gas pipes, For leaking air will bring the overheat engine, an
immediate repair must be done.
During the operation that is surrounded by the dust and oil mixed air, frequent cleaning must be done
on the impellers. Tear down the impeller casing (attention: be careful not to bend) and must clean with
non-acid solvent solution. If necessary, use plastic scraper If impeller is severely polluted, dip the
impeller into solution and may be better to clean it with stiff brush.
Then one thing to beware is to dip only impeller part and so do not support by impeller but bearing
housing.
Technical Information
1,100
1,200
UPPER LEVEL
1,300
LOWER LEVEL
- 38 -
EFM1007I

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