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

Rebuild Specifications

Rotor Backlash 0.01
Note: Maximum inner to outer rotor tip clearance.
Rotor To Body Clearance 0.014
Rotor End Play 0.001-0.004
Note: Measured between pump cover mounting surface and end of gear, using straight edge and feeler gauge.
Rotor Thickness(Height) Inner 0.825
Outer 0.825
Rotor Diameter 2.469
Note: (Minimum)
Cover Flatness Variation 0.0015
Note: Maximum
Relief Valve Spring Free Length 2.031
Spring Pressure 16-17 at 1.343