Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Connecting Rod Bearing


Crankshaft main bearings are not interchangeable and should be marked at removal to ensure correct assembly. Upper and lower bearing halves are not interchangeable. Lower main bearing halves of Nos. 1 and 3 are interchangeable. Bearings are available in standard size and undersizes of .001, .002, .003, .010 and .012 inch.