Kubota M9540, Workshop Manual, Page: 202 / 619

1-S79
M8540, M9540, WSM ENGINE
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
Clearance between
outer rotor and pump
body
Factory spec.
0.100 to 0.184 mm
0.00394 to 0.00724 in.
Allowable limit
0.3 mm
0.01 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
0.00866 in.
Tightening torque Oil pump cover screw
7.9 to 9.3 N·m
0.80 to 0.95 kgf·m
5.8 to 6.9 lbf·ft
KiSC issued 09, 2008 A