Subaru Legacy 2003 Service Manual page 1802

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2. CASE CLEARANCE

Measure the clearance between the outer rotor and

the oil pump rotor housing. If the clearance ex-

ceeds the limit, replace the rotor.

Case clearance:

0.10 — 0.175 mm (0.0039 — 0.0069 in)

0.20 mm (0.0079 in)

3. SIDE CLEARANCE

Measure clearance between oil pump inner rotor

and pump cover. If the clearance exceeds the limit,

replace rotor or pump body.

Side clearance:

0.02 — 0.07 mm (0.0008 — 0.0028 in)

0.12 mm (0.0047 in)

4. OIL RELIEF VALVE

Check the valve for fitting condition and damage,

and the relief valve spring for damage and deterio-

ration. Replace the parts if defective.

Relief valve spring:

73.7 mm (2.902 in)

Installed length

54.7 mm (2.154 in)

Load when installed

93.1 N (9.49 kgf, 20.93 lb)

5. OIL PUMP CASE

Check the oil pump case for worn shaft hole,

clogged oil passage, worn rotor chamber, cracks,

and other faults.

Check the oil seal lips for deformation, hardening,

wear, etc. and replace if defective.

LU(H4DOSTC)-13

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