subaru Workshop Repair Guides

Subaru Workshop Service and Repair Manuals

Oil Pump, Engine|Removal|Page 1270 > < Oil Pump, Engine|Removal|Page 1268
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INNER AND OUTER ROTOR
Marking ...............................................................................................................................................................................................................  Height (H2)
A ..............................................................................................................................................................................  0.5468 - 0.5476 in. (13.89 - 13.91 mm)
B ..............................................................................................................................................................................  0.5472 - 0.5480 in. (13.90 - 13.92 mm)
C ..............................................................................................................................................................................  0.5476 - 0.5484 in. (13.91 - 13.93 mm)

OIL RELIEF VALVE

Check the valve for fitting condition and damage.  Check the relief valve spring for damage and deterioration.  Replace the parts if defective.

SPECIFICATION:
Relief Valve Spring:

Free length ........................................................................................................................................................................................  1.854 in. (47.1 mm)
Installed length .................................................................................................................................................................................  1.319 in. (33.5 mm)
Load when installed .....................................................................................................................................................  8.555 - 9.437 lb. (3.88 - 4.28 kg)

OIL PUMP CASE

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

OIL SEAL

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

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