Toyota T100 1996 Service Manual page 1148

Relief Valve
1996 TOYOTA T100 (RM449U)
LUBRICATION (5VZ−FE)
INSPECTION
1. INSPECT RELIEF VALVE
Coat the valve with engine oil and check that it falls smoothly
into the valve hole by its own weight.
If the valve does not fall smoothly, replace the valve. If neces-
sary, replace the oil pump assembly.
P20968
2. INSPECT ROTOR BODY CIEARANCE
Using a thickness gauge, measure the clearance between the
driven rotor and pump body.
Standard body clearance:
0.10 − 0.18 mm (0.0039 − 0.0069 in.)
Maximum body clearance:
0.30 mm (0.0118 in.)
If the body clearance is greater than maximum, replace the ro-
tors as a set. If necessary, replace the oil pump assembly.
P20934
3. INSPECT ROTOR TIP CLEARANCE
Using a thickness gauge, measure the clearance between the
drive and driven rotor tips.
Standard tip clearance:
0.11 − 0.24 mm (0.0043 − 0.0094 in.)
Maximum tip clearance:
0.35 mm (0.0138 in.)
If the tip clearance is greater than maximum, replace the rotors
as a set.
4. INSPECT ROTOR SIDE CLEARANCE
P20935
Using a thickness gauge and precision straight edge, measure
the clearance between the rotors and precision straight edge.
Standard side clearance:
0.03 − 0.09 mm (0.0012 − 0.0035 in.)
Maximum side clearance:
0.15 mm (0.0059 in.)
If the side clearance is greater than maximum, replace the ro-
tors as a set. If necessary, replace the oil pump assembly.
P20936
− OIL PUMP
LU−11
LU038−01