Oil Pump: Testing and Inspection

CAUTION: Make necessary correction or parts replacement if wear, damage or any other abnormal conditions are found through inspection.

Relief Valve
^ Check to see that the relief valve slides freely.
^ The oil pump must be replaced if the relief valve does not slide freely.
^ Replace the spring and/or the oil pump assembly if the spring is damaged or badly worn.

Body And Gears
The pump assembly must be replaced if one or more of the conditions below is discovered during inspection.
^ Badly worn or damaged driven gear guide.
^ Badly worn driving gear drive face.
^ Badly scratched or scored body sliding face or driven gear.
^ Badly worn or damaged gear teeth.





^ Measure the clearance between the body and the driven near with a feeler clause.





^ Measure the clearance between the drive gear and driven gear with a feeler gauge.





^ Measure the side clearance with a precision straight edge and a feeler gauge.





^ Oil strainer.
^ Check the oil strainer for cracking and scoring.
^ If cracking and scoring are found, the oil strainer must be replaced.