Weichai America Corp.
77
9.2
Oil pump assembly and disassembly
9.2.1
Exploded view of oil pump
9.2.2
Steps to disassemble oil pump
Remove the two hexagon bolts and self-locking nut, take down engine oil pump, as shown in Fig.
9.2.3
Steps to assemble oil pump
1)
Check the pump before assembling, make sure there is no manufacturing defect and damage.
2)
Clean up the fitting surface between oil pump and engine block.
3)
Install engine oil pump.
4)
Install and tighten the two toothed hexagon bolts and self-locking nut.
9.2.4
Inspection and maintenance of oil pump
1)
Check the engine oil pump for crack damage, check whether its inner cavity is smooth, replace it
if necessary.
2)
Check whether engine oil pump shaft can rotate smoothly, replace it if necessary.
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