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

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General

NOTE: Different makes of piston must not be fitted in the same engine.





GENERAL:
Speed @ 5000 RPM: 15 m/s
Radius: 257 mm (10.12 inch)
Diameter of Dish: 75 mm (2.95 inch)
Dish Height (A): 3.05 mm (0.120 inch)





PISTON DIAMETER:
This is measured at right angles to the piston boss, 13 mm (0.52 inch) from the bottom of the skirt.





CLASSIFICATION OF PISTONS AND CYLINDER BORES:
The piston classification code is stamped on the piston crown. The codes for servicing are:
^ AB
^ B
^ C

The cylinder classification code is stamped on the block adjacent to each cylinder. Cylinders are either class A or class B, both of which may occur in the same block.