Subaru Legacy 2004 Service Manual page 381

E: INSPECTION
1. TIP CLEARANCE
Measure the tip clearance of rotors. If the clearance
is out of the standard value, replace the rotors as a
matched set.
Tip clearance:
Standard value
0.04 — 0.14 mm (0.0016 — 0.0055 in)
2. CASE CLEARANCE
Measure the clearance between the outer rotor and
oil pump rotor housing. If the clearance is out of the
standard value, replace the oil pump case.
Case clearance:
Standard value
0.10 — 0.175 mm (0.0039 — 0.0069 in)
Oil Pump
3. SIDE CLEARANCE
Measure the clearance between oil pump inner ro-
tor and pump cover. If the clearance is out of the
standard value, replace the rotor or oil pump case.
Side clearance:
Standard value
0.02 — 0.07 mm (0.0008 — 0.0028 in)
4. OIL RELIEF VALVE
LU-00023
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:
Free length
72.8 mm (2.866 in)
Installed length
54.7 mm (2.154 in)
Load when installed
81.3 N (8.29 kgf, 18.24 lb)
5. OIL PUMP CASE
Check the worn shaft hole, clogged oil passage,
worn rotor chamber, cracks and other faults.
6. OIL SEAL
Check the oil seal lips for deformation, hardening,
wear, etc, and replace if defective.
LU-00024
LU(H4SO 2.0)-13
LUBRICATION
LU-00025