Weichai America Corp.
88
5.
Disassemble the oil pump.
6.
Disassemble the main oil gallery relief valve.
7.
Disassemble the oil filter
8.
Loosen the hollow bolts used for water intaking of air compressor on oil cooler cover and
hexagon bolts used for fastening dipstick subassembly and disassemble the oil cooler cover, as
shown in Figure 9-7.
9.
Disassemble the oil cooler.
10.
Disassemble the oil cooler bypass valve.
9.1.3 Assembling Steps of Lubrication System
The assembly should be conducted in the reverse order of disassembly.
9.2
Disassembly and Assembly of Oil Sump
9.2.1 Explosive View of Oil Sump
Fig. 9-3 Exploded view of Oil Sump
No.
name
No.
name
No.
name
1
Gland
3
Hexagon bolt
5
Seal washer
2
Oil sump holding block
4
Oil sump
6
Magnetic screw plug
assembly
9.2.2 Pre-assembly Preparation
11.
Equipment condition: sleeve wrench, copper hammer
12.
Preparation: remove the screw plug, drain the oil.
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