Service Manual

Weichai America Corp.
Revision: August 2019 53
Fig. 10-7 Exploded view of engine oil cooler
10.7.2 Steps to Disassemble Engine Oil Cooler
Loose the connecting bolts and take down the cooler, as shown in Figure 10-7.
10.7.3 Steps to Assemble Engine Oil Cooler
①Check the cooler before assembling, make sure there is no manufacturing defect and damage.
②Clean up the fitting surface between engine oil cooler and filter seat.
③Install engine oil cooler and the connecting thread sleeve, tighten it.
10.7.4 Inspection and Maintenance of Engine Oil Cooler
Check the engine oil cooler for crack damage, replace it if necessary.
Check whether the oil cooler bypass valve has sluggish phenomenon, replace it if necessary.
10.8 Disassembly and Assembly of Main Oil Gallery Pressure Limiting Valve
10.8.1 Exploded View of Main Oil Gallery Pressure Limiting Valve
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