Operation and Maintenance Manual of WP13C Series Diesel Engines
Weichai Power Pursuit of Excellence
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2. Major works during diesel engine check and maintenance
Table 4 Work during diesel engine maintenance
Work item
Initial check
Routine
check
WD1
WD2
WD3
WD4
Change the diesel engine oil
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Water pump leaking?
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Replace the oil filter
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Every time when change the oil
Check and adjust the valve
clearance
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Replace the fuel filter
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Clean the coarse strainer of
fuel pump filter
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Check the coolant capacity
and add if insufficient
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Fasten the coolant pipe clamps
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Fasten the air inlet pipes and
hoses
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Clean the filter element of air
filter
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Check and fasten the V-belt
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Check the fuel injection pump
in the special workshop
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Adjust the idle speed
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Note:
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Mark for items requiring maintenance
3. Daily maintenance of diesel engine
3.1 During diesel engine running, pay attention to the oil temperature, oil pressure and outlet water
temperature, and check for leakages (oil, water, gas). In case of any abnormality, find out the causes
immediately and troubleshoot timely.
3.2 After shutdown of diesel engine, check the capacity of fuel, coolant and oil, and add to the specified
level if insufficient.
3.3 Drain the water in primary fuel filter.
3.4 Check the tension of drive belt and adjust as necessary.
3.5 If the environment temperature may be below 0 and no antifreeze is used,
℃
drain the coolant empty
to protect the diesel engine parts against frost cracking.
4. Maintenance during long-term shutdown of diesel engine
4.1 Oil seal method
Add anticorrosive agent in the lubricating oil of lubricating system. Carry out preparations before starting
for diesel engine normal running. Stop the engine after running for 5~10min, add oil seal oil for fuel system
by using a clean container, remove the original fuel inlet pipe of diesel engine, insert it into the container,
and eliminate the air in the fuel system. Start the diesel engine, run it for 15min at 2/3 of rated speed, and
then stop it to let the starting motor drive the diesel engine for running. Use the high pressure spray gun
filled with intake/exhaust pipe oil seal oil to spray the oil seal oil toward the inlet of supercharger until the
