Inspect Body Clearance; Inspect Tip Clearance; Inspect Side Clearance; Inspect Relief Valve - Toyota 22R-E Service Manual

EG2–282
ENGINE – LUBRICATION SYSTEM
OIL PUMP INSPECTION

1. INSPECT BODY CLEARANCE

Using a thickness gauge, measure the clearance be–
tween the driven rotor and pump body.
Standard clearance:
0.10 –0.13 mm (0.0039 – 0.0051 in.)
Maximum clearance:
0.30 mm (0.0118 in.)
If the clearance is greater than maximum, replace the
oil pump rotor set and/or pump body.

2. INSPECT TIP CLEARANCE

Using a thickness gauge, measure the clearance be–
tween the drive and driven rotors.
Standard clearance:
0.11 – 0.24 mm (0.0043 – 0.0094 in.)
Maximum clearance:
0.35 mm (0.0138 in.)
If the clearance is greater than maximum, replace the
oil pump rotor set.

3. INSPECT SIDE CLEARANCE

Using a thickness gauge and precision straight edge,
measure the side clearance as shown.
Standard clearance:
0.03 – 0.09 mm (0.0012 – 0.0035 in.) .
Maximum clearance:
0.15 mm (0.0059 in.)
If the clearance is greater than maximum, replace the
oil pump rotor set and/or pump body.

4. INSPECT RELIEF VALVE

Coat the relief 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
and/or oil pump assembly.