S-110
07-E3B SERIES, WSM
ENGINE
(6) Oil Pump
Rotor Lobe Clearance
1. Measure the clearance between lobes of the inner rotor and the
outer rotor with a feeler gauge.
2. If the clearance exceeds the allowable limit, replace the oil pump
rotor assembly.
W1071254
Clearance between Outer Rotor and Pump Body
1. Measure the clearance between the outer rotor and the pump
body with a feeler gauge.
2. If the clearance exceeds the allowable limit, replace the oil pump
rotor assembly.
W1071334
Clearance between Rotor and Cover
1. Put a strip of plastigage onto the rotor face with grease.
2. Install the cover and tighten the screws with the specified torque.
3. Remove the cover carefully, and measure the amount of the
flattening with the scale and get the clearance.
4. If the clearance exceeds the allowable limit, replace oil pump
rotor assembly and the cover.
W1148218
(7) Relief Valve
Free Length of Relief Valve Spring
1. Measure the free length (A) with vernier calipers. If the
measurement is less than the allowable limit, replace it.
2. Check the entire surface of the spring for scratches. Replace it,
if any.
W1265606
Clearance between
inner rotor and outer
rotor
Factory spec.
0.030 to 0.090 mm
0.0012 to 0.0035 in.
Allowable limit
0.30 mm
0.012 in.
Clearance between
outer rotor and pump
body
Factory spec.
0.100 to 0.184 mm
0.00394 to 0.00724 in.
Allowable limit
0.30 mm
0.012 in.
Clearance between rotor
and cover
Factory spec.
0.025 to 0.075 mm
0.00099 to 0.0029 in.
Allowable limit
0.225 mm
0.00886 in.
Tightening torque Oil pump cover screw
7.9 to 9.3 N·m
0.80 to 0.95 kgf·m
5.8 to 6.8 lbf·ft
Free length (A)
Factory spec.
60.0 to 60.5 mm
2.37 to 2.38 in.
Allowable limit
55.0 mm
2.17 in.
Tightening torque
Relief valve retaining
screw
69 to 78 N·m
7.0 to 8.0 kgf·m
51 to 57 lbf·ft
(1) Front Cover
(2) Relief Valve
(3) Spring
(4) Packing
(5) Relief Valve Retaining Screw
A : Free Length
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