Rotor Lobe Clearance; Clearance Between Rotor And Cover; Overrunning Clutch; Oil Pump - Kubota D1503-M Workshop Manual

03-M-E3B, 03-M-DI-E3B, 03-M-E3BG WSM

(6) Oil Pump

(7) Starter

Rotor Lobe Clearance

1. Measure the clearance between lobes of the inner rotor and the
outer rotor with a feeler gauge.
2. Measure the clearance between the outer rotor and the pump
body with a feeler gauge.
3. If the clearance exceeds the factory specifications, replace the oil
pump rotor assembly.
Factory spec.
Clearance between
inner rotor and outer
rotor
Allowable limit
Factory spec.
Clearance between
outer rotor and pump
body
Allowable limit

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 width of the press
gauge with a sheet of gauge.
4. If the clearance exceeds the factory specifications, replace oil
pump rotor assembly.
Factory spec.
Clearance between
inner rotor and cover
Allowable limit

Overrunning Clutch

1. Check the pinion and if worn or damage, replace the clutch
assembly.
2. Check that the pinion turns freely and smoothly in the
overrunning direction and does not slip in the cranking direction.
3. If the pinion slips or does not turn in both directions, replace the
overrunning clutch assembly.
NOTE
• Do not wash off the grease in the overrunning clutch with
the chemicals or oils.
S-97
DIESEL ENGINE
0.030 to 0.14 mm
0.0012 to 0.0055 in.
0.2 mm
0.008 in.
0.11 to 0.19 mm
0.0044 to 0.0074 in.
0.25 mm
0.0098 in.
W1035296
0.105 to 0.150 mm
0.00414 to 0.00590 in.
0.20 mm
0.008 in.
W1035444
W1156799
KiSC issued 07, 2008 A