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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Piston Ring, Engine

Piston Compression Ring End Gap (Production-Top) (Measured in Cylinder Bore) 0.009 - 0.0149 Inch (in)
Piston Compression Ring End Gap (Production-2nd) (Measured in Cylinder Bore) 0.0173 - 0.0251 Inch (in)
Piston Oil Ring End Gap (Production) (Measured in Cylinder Bore) 0.0070 - 0.0271 Inch (in)
Piston Compression Ring End Gap (Service-Top) (Measured in Cylinder Bore) (Maximum) 0.012 - 0.018 Inch (in)
Piston Compression Ring End Gap (Service-2nd) (Measured in Cylinder Bore) (Maximum) 0.020 - 0.028 Inch (in)
Piston Oil Ring End Gap-Service Limit (Measured in Cylinder Bore) (Maximum) 0.010 - 0.030 Inch (in)
Piston Compression Ring Groove Clearance (Production-Top) 0.00157 - 0.003346 Inch (in)
Piston Compression Ring Groove Clearance (Production-2nd) 0.00157 - 0.003149 Inch (in)
Piston Oil Ring Groove Clearance (Production) 0.0004 - 0.00866 Inch (in)
Piston Compression Ring Groove Clearance (Service-Top) (Maximum) 0.00157 - 0.003346 Inch (in)
Piston Ring Groove Clearance (Service-2nd) (Maximum) 0.00157 - 0.003149 Inch (in)
Piston Oil Ring Groove Clearance (Service Limit) (Maximum) 0.0004 - 0.00866 Inch (in)