Weichai America Corp.
50
4.4
Push rod and tappet assembly and disassembly
4.4.1
Exploded view of tappet and push rod
Pos.
Name
Pos.
Name
Pos.
Name
1
Camshaft
2
Tappet
3
Push rod
4.4.2
Steps to disassemble tappet and push rod
1)
After removing rockers and rocker shafts, pull the pushrods out vertically.
2)
After removing camshaft, directly take out valve tappet, place them orderly;
4.4.3
Steps to assemble tappet and push rod
1)
Check valve tappets and push rod, replace them if necessary. Before installing the tappet, it
must be cleaned with compressed air. Check to ensure that the oil channel is smooth.
2)
Apply clean lubricating oil evenly onto the engine block tappet-fitting hole and valve tappet
fitting surface.
3)
Install the valve tappet into the engine block tappet-fitting hole. The tappet should rotate freely
in the hole. Install the camshaft, refer to camshaft assembly (11.9.3) for details.
4)
Loosely fit the rocker seat onto the cylinder cover. Check to ensure that the pushrod is clean
and the welding area is intact;
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