Oil Pressure Regulator Valve: Service and Repair

OIL RELIEF VALVE
Check the valve for assembly condition and damage, and the relief valve spring for damage and deterioration. Replace the parts if defective.
Relief Valve spring
Free length: 73.7 mm (2.902 in)
Installed length: 54.7 mm (2.154 in)
Load when Installed: 93.1 N (9.49 kgf, 20.88 lb)

OIL PUMP CASE
Check the oil pump case for worn shaft hole, clogged oil passage, worn rotor chamber, cracks and other faults.

FRONT OIL SEAL
Check the front oil seal lips for deformation, hardening, wear, etc. and replace if defective.