Oil Pump, Engine

1982 Dodge and Ram 400 L4-135 2.2L SOHCSECTION 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
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.