Oil Pump Assembly Disassembly and Reassembly

Oil Pump Assembly Disassembly and Reassembly
Reference: Oil Pump Assembly Removal and Installation

Disassembly
1) Remove oil pump sprocket referring to step 3) in "Removal" under Balancer Shaft Removal and Installation.
2) Loosen oil pump cover bolts (2) and remove oil pump cover (1).





3) Remove outer rotor (1) and inner rotor (2).

CAUTION:
The outer rotor must be installed facing the same direction which it was when it was removed, so confirm the direction the matchmark (3) is facing.





4) Remove relief valve (1) and spring (2) by removing retainer (3) from oil pump cover (4).





Reassembly
Reference: Oil Pump Inspection

1) Wash clean and then dry all disassembled parts.
2) Apply thin coat of engine oil to the following parts.
^ Inner rotor
^ Outer rotor
^ Inside surfaces of oil pump housing and oil pump cover.
3) Install outer rotor (1) and inner rotor (2) to oil pump housing.

CAUTION:
Noting the matchmark (3) side, reinstall the rotors in the original position.





4) Apply engine oil to relief valve (1) and spring (2), and install them to oil pump cover (4).
5) Tighten retainer (3) to specified torque.

Tightening torque
Retainer (a): 49 Nm (5.0 kg-m, 36.5 lbf-ft)





6) Install oil pump cover (1) to oil pump housing.

Tightening torque
Oil pump cover bolt (a): 12 Nm (1.2 kg-m, 9.0 lbf-ft)





7) Turn balancer shaft by hand to check for smooth rotation.





8) Install oil pump sprocket referring to step 3) in "Installation" under Balancer Shaft Removal and Installation.