Oil Pump

DISASSEMBLY / INSPECTION / ASSEMBLY
1. Disassemble in the order shown in the illustration, referring to Disassembly Note.
2. Assemble in the reverse order of disassembly, referring to Assembly Procedure.

Disassembly Note





Oil Pump Cover (2)
1. Loosen the mounting bolts evenly in the order shown.
2. Remove the oil pump cover from the oil pump housing.

Inspection





Oil Pump Housing, Outer Rotor, Inner Rotor (7, 4, 3)
1. Measure the clearance between the end of the oil pump housing and the outer rotor and inner rotor at four places along their circumferences. Clearance standard is 0.02 - 0.04 mm (0.0008 - 0.0015 inch) and the maximum is 0.05 mm (0.0019 inch).
2. If not as specified, replace the pump assembly.





3. Measure the clearance between the oil pump boss and the inner rotor. Oil clearance standard is 0.02 - 0.15 mm (0.0008 - 0.0059 inch) and the maximum is 0.15 mm (0.0059 inch).
4. If not within the specification, replace the oil pump assembly.





Assembly Procedure
1. Apply ATF to the new oil seal and install it to the oil pump by using the Special Service Tool (SST).





2. Apply ATF to the new D-ring and install it to the oil pump housing.
3. Apply ATF to the inner and outer rotors and install them to the oil pump busing.
4. Mount the oil pump cover onto the oil pump housing.





5. Tighten the bolts evenly and gradually in the order shown to 24 - 27 Nm (18 - 20 ft. lbs.).

CAUTION: Do not overexpand the seal rings when installing them.





6. Apply petroleum jelly to the new seal rings and install them to the oil pump cover. Seal ring inner diameter is 55.3 mm (2.177 inch).