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Oil Pump: Inspection

  1. Inspect oil pump housing for cracks or damage. Inspect oil screen for clogging or damage. Inspect oil screen "O" ring. Ensure relief valve slides smoothly in bore. Inspect pressure relief spring for damaged coils.
  2. Inspect oil pump gears for wear or damage. Using a feeler gauge, measure radial and side clearance. See Figure and Figure . If clearance exceeds specification, replace outer rotor or case. See OIL PUMP SPECIFICATIONS TABLE  .
OIL PUMP SPECIFICATIONS

Application Radial Clearance In. (mm) Side Clearance In. (mm)
All Models .0122 (.309) .0059 (.150)
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