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

Piston Ring

Ring Width
Compression (Top) 1.460-1.490 mm (0.0575-0.0587 In.)
Compression (Bottom) 1.460-1.490 mm (0.0575-0.0587 In.)
Oil Ring Side Seal - Snug Fit
Service Limit Side Clearance 0.15 mm Max. (0.0006 In. Max)
Ring Gap
Compression (Top) (in Gauge) 0.25-0.50 mm (0.01-0.02 In.)
Compression (Bottom) (in Gauge) 0.25-0.50 mm (0.01-0.02 In.)
Oil Ring (Steel Rail) (in Gauge) 0.25-1.25 mm (0.010-0.049 In.)
Side Clearance
1st Ring 0.040-0.095 mm (0.0016-0.0037 In.)
2nd Ring 0.040-0.095 mm (0.0016-0.0037 In.)