Oil Pump: Service and Repair
DISASSEMBLY / INSPECTION / ASSEMBLYWARNING: Continuous exposure with USED engine oil has caused skin cancer in laboratory mice. Protect your skin by washing with soap and water immediately after this work.
1. Disassemble in the order shown in the figure.
2. Assemble in the reverse order of disassembly, referring to Assembly Note.
INSPECTION
Inner Rotor, Outer Rotor, And Oil Pump Body
Measure the following clearances. Replace the rotor or oil pump body if necessary.
Tooth tip clearance:
0.02 - 0.18 mm (0.0008 - 0.0070 inch)
Maximum: 0.20 (0.0079 inch)
Outer rotor-to-oil pump body clearance:
0.113 - 0.186 mm (0.00445 - 0.00732 inch)
Maximum: 0.22 mm (0.0087 inch)
Side clearance:
0.03 - 0.09 mm (0.00119 - 0.00354 inch)
Maximum: 0.13 mm (0.00512 inch)
Pressure Spring
Measure the free length. Replace the spring if necessary.
Free length: 46.79 mm (1.842 inch)
Assembly Note
Inner rotor and outer rotor
Install the inner rotor and outer rotor into the oil pump body with the marks aligned as shown.
Oil pump cover
Install the oil pump cover and tighten the bolts in the order shown.
Tightening torque:
5.9 - 8.8 Nm (53 - 78 inch lbs.)