37. Oil Pump Clean and Inspect

OIL PUMP CLEANING AND INSPECTION

Tools Required: SA91101NE Feeler Gauge Set






1. Inspect the body clearance:
A. Using a SA91101NE or equivalent, measure the clearance between the driven rotor and the pump body.

Specification
The standard driven rotor to pump body side clearance is 0.150-0.277 mm (0.006-0.0011 in).
The service limit driven rotor to pump body side clearance is a maximum of 0.277 mm (0.011 in).

B. If the clearance is greater than the service limit, replace the oil pump assembly.






2. Inspect the tip clearance:
A. Using a SA91101NE or equivalent, measure the clearance between both rotor tips.

Specification
The service limit rotor tip clearance is a maximum of 0.150 mm (0.006 in).

B. If the clearance is greater than the service limit, replace the oil pump assembly.






3. Inspect the end-to-end clearance:
A. Using a SA91101NE , Plastigae, or equivalent, measure the clearance between the side of the drive and the driven rotors and the oil pump cover plate.

Specification
The standard rotor to cover side clearance is 0.040-0.125 mm (0.0016-0.0049 in).
The service limit rotor to cover side clearance maximum is 0.08 mm (0.003 in).

B. If the clearance is greater than the service limit, replace the oil pump assembly.