Disassembly and Assembly

DISASSEMBLY





1. REMOVE PRESSURE REGULATOR VALVE
a. Using snap ring pliers, remove the snap ring.
b. Remove the retainer, spring and pressure regulator valve piston.

INSPECTION





1. INSPECT PRESSURE REGULATOR VALVE
Coat the valve piston with engine oil and check that it falls smoothly into the valve hole by its own weight. If necessary, replace the valve.





2. INSPECT ROTOR BODY CLEARANCE
Using a feeler gauge, measure the clearance between the driven rotor and pump body.

Standard clearance: 0.10 - 0.16 mm (0.0039 - 0.0063 inch)
Maximum clearance: 0.20 mm (0.0079 inch)

If the clearance is greater than maximum, replace the oil pump rotor set and/or pump body.





3. INSPECT ROTOR TIP CLEARANCE
Using a feeler gauge, measure the clearance between both rotor tips.

Standard clearance: 0.03 - 0.14 mm (0.0012 - 0.0055 inch)
Maximum clearance: 0.20 mm (0.0079 inch)

If the clearance is greater than maximum, replace the oil pump rotor set.





4. INSPECT ROTOR SIDE CLEARANCE
Using a feeler gauge and flat block, measure the side clearance as shown.

Standard clearance: 2.91 - 2.97 mm (0.1145 - 0.1169 inch)
Minimum clearance: 2.90 mm (0.1142 inch)

If the clearance is greater than maximum, replace the oil pump rotor set and/or pump body.

REPLACEMENT





1. REPLACE OIL PUMP OIL SEAL
a. Using a screwdriver, pry out the oil seal.





b. Using Special Service Tool (SST) and a hammer, tap in a new oil seal until its surface is flush with the oil pump cover edge.
SST 09309-37010
c. Apply MP grease to the oil seal lip.
2. REPLACE CRANKSHAFT FRONT OIL SEAL

REASSEMBLY

1. INSTALL PRESSURE REGULATOR VALVE
a. Insert the pressure regulator valve piston, spring and retainer.
b. Using snap ring pliers, install the snap ring.