Service Manual

Weichai America Corp.
Revision: August 2019 68
11.7 Assembly and disassembly of crankshaft bearing shell
11.7.1 Exploded view of crankshaft bearing shell
Fig. 11- 11 Exploded view of crankshaft bearing shell
11.7.2 Steps to disassemble crankshaft bearing shell
Push the shells out with hand, and mark the removed shells (should be corresponded with holes on
engine block and crankcase).
11.7.3 Steps to assemble crankshaft bearing shell
① Clean up main bearing shells and the fitting holes.
② If no shell is replaced, then install the two shells into engine block (upper) and crankcase
(lower) respectively (pay attention to the mark, shells should be installed into corresponding
holes on engine block and crankcase), do not mix upper and lower shells, the one with oil
groove is upper one. The shell lips should be aligned and applied with engine oil.
11.7.4 Inspection and maintenance of crankshaft bearing shell
① Clean the bearing shells and check their wear condition
② Check and ensure there is no peeling, locating lip damage and transverse crack on the shell.
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