Oil Pump - Kubota B1830 Workshop Manual

B1830,B2230,B2530,B3030, WSM

(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 factory specifications, replace the
oil pump rotor assembly.
Rotor lobe clearance Factory specification
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 factory specifications, replace the
oil pump rotor assembly.
Clearance between outer
Factory specification
rotor and pump body
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.
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 factory specifications, replace the
oil pump rotor assembly.
Clearance between rotor
Factory specification
and cover
1-S66
ENGINE
0.06 to 0.18 mm
0.0024 to 0.0071 in.
9Y1210003ENS0110US0
0.100 to 0.180 mm
0.0039 to 0.0071 in.
9Y1210003ENS0111US0
0.025 to 0.075 mm
0.0010 to 0.0030 in.
9Y1210003ENS0112US0
KiSC issued 05, 2012 A