Tip Clearance; Case Clearance - Subaru SVX 1992 Manual

2-4 Iw1B01 ENGINE LUBRICATION SYSTEM
B : DISASSEMBLY
F C:
INSPECTION
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C2-073
Fig. 9
Remove screws which secure oil pump cover and
disassemble oil pump .
Inscribe alignment marks on inner and outer rotors so
that they can be replaced in their original positions
during reassembly .
a. Before removing relief valve, loosen plug when
removing oil pump from cylinder block.
b. The washer(s), which are placed between the relief
valve and spring, prevent the relief valve from under-
going pressure variations . Replace the original number
of washers during reassembly .
1 . TIP CLEARANCE
Measure the tip clearance of rotors . If the clearance
exceeds the limit, replace rotors as a matched set.
Tip clearance :
Standard
0.04 - 0.14 mm (0 .0016 - 0.0055 in)
Limit
0.18 mm (0.0071 in)
Thickness gauge -
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CG
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C2-075
Fig. 10
2. CASE CLEARANCE
Measure the clearance between the outer rotor and the
oil pump case rotor housing . If the clearance exceeds
the limit, replace the rotor.
Case clearance:
Standard
0.10 - 0.175 mm (0 .0039 - 0.0069 in)
Limit
0.20 mm (0 .0079 in)
Thickness gauge -
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C2-074
Fig. 11
10