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
If it fails: lemon-manuals.org.ua

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Oil Pump, Engine

Rotor Backlash 0.010
Note: Maximum inner & outer rotor tip clearance.
Rotor To Body Clearance 0.001-0.003
Note: Maximum clearance between inner and outer rotors and body.
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 Diameter 2.469
Note: (Minimum)
Cover Flatness Variation 0.003
Relief Valve Spring Free Length 1.95
Spring Pressure Lbs. @ Inches 20 at 1.34