Oil Pump - Kubota EA330-E4 Series Workshop Manual

EA330-E4, WSM

(6) Oil Pump

Clearance between Inner Rotor and Outer Rotor
1. Measure the clearance between a high point on the inner rotor
and high point on the outer rotor with a feeler gauge.
2. If the clearance exceeds the allowable limit, replace the oil
pump rotor assembly.
Factory specification
Clearance between inner
rotor and outer rotor
Allowable limit
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.
Factory specification
Clearance between outer
rotor and pump body
Allowable limit
Clearance between Rotor and Cover
1. Put a strip of press gauge onto the rotor face with grease.
2. Install the cover and tighten the screws.
3. Remove the cover carefully, and measure the depression of
press gauge with a sheet of gauge.
4. If the clearance exceeds the allowable limit, replace the oil
pump rotor assembly.
Factory specification
Clearance between rotor
and cover
Allowable limit
1-S60
ENGINE
0.15 mm or less
0.0059 in. or less
0.20 mm
0.0079 in.
9Y1211018ENS0107US0
0.0900 to 0.171 mm
0.00355 to 0.00673 in.
0.24 mm
0.0094 in.
9Y1211018ENS0108US0
0.02 to 0.06 mm
0.0008 to 0.002 in.
0.25 mm
0.0098 in.
9Y1211018ENS0109US0
KiSC issued 05, 2015 A