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

Piston Ring Width:
Compression:
Top 1.46 - 1.490 mm (0.058 - 0.059 inch)
Bottom 1.46 - 1.490 mm (0.058 - 0.059 inch)
Piston Ring Side Clearance:
Compression:
Top 0.034 - 0.076 mm (0.0013 - 0.0030 inch)
Bottom 0.034 - 0.076 mm (0.0013 - 0.0030 inch)
Oil Ring Snug Fit
Service Limit 0.15 mm (0.006 inch) Maximum
Ring Gap:
Compression:
Top 0.20 - 0.35 mm (0.008 - 0.014 inch)
Bottom 0.33 - 0.48 mm (0.013 - 0.019 inch)
Oil (Steel Rail) 0.25 - 0.76 mm (0.010 - 0.030 inch)