Weichai America Corp.
Revision: August 2019 40
Fig. 9-4 Exploded view of tappet and pushrod
9.4.2 Tappet and Pushrod Disassembly Procedure
1.
After removing rockers and rocker shafts, pull the pushrods out vertically.
2.
After removing camshaft, directly take out valve tappet, place them orderly;
9.4.3 Tappet and Pushrod Assembly Procedure
1.
Check valve tappets and pushrod, 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;
5.
Apply clean lubricating oil on the pushrod and ensure that the round head is applied with
sufficient oil.
6.
Install the pushrod by putting the pushrod into the valve tappet through the cylinder cover.
9.4.4 Tappet and Pushrod Inspection and Maintenance
1.
Clean the valve tappet and pushrod.
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