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)

Or, hide this message: temporarily or permanently

Crankshaft Main Bearing










Main Bearing Cap Torque and Tightening Sequence





Main Bearing-to-Journal Oil Clearance





Crankshaft Bore Code Location
Letters or Bars have been stamped on the end of the block as a code for the size of each of the 4 main journal bores.





Main Journal Code Locations (Numbers or Bars)
Numbers or bars have been stamped on the crankshaft No. 1 web as a code for the main journal sizes.





Main Bearing Selection Chart