Oil Pump - Kubota SM-E3B Series Workshop Manual

SM-E3B SERIES WSM

(6) Oil Pump

Correcting Cylinder (Oversize)
1. When the cylinder is worn beyond the allowable limit, bore and
hone it to the specified dimension.
Factory
spec.
Cylinder liner I.D.
Allowable
limit
Hone to 2.2 to 3.0 μm Rz
(87 to 110 μin. Rz)
Finishing
∇∇∇.
2. Replace the piston and piston rings with oversize ones.
Oversize : 0.25 mm (0.0098 in.)
Marking : 025
NOTE
• When the oversize cylinder is worn beyond the allowable
limit, replace the cylinder block with a new one.
(1) Cylinder I.D. (Before Correction)
Rotor Lobe Clearance
1. Measure the clearance between lobes of the inner rotor and the
outer rotor with a thickness gauge.
2. If the clearance exceeds the factory specifications, replace the oil
pump rotor assembly.
Rotor lobe clearance Factory spec.
Clearance between Outer Rotor and Pump Body
1. Measure the clearance between the outer rotor and the pump
body with a thickness gauge.
2. If the clearance exceeds the factory specifications, replace the oil
pump rotor assembly.
Clearance between
outer rotor and pump Factory spec.
body
S-71
DIESEL ENGINE
Z482-E3B
67.250 to 67.269 mm
D722-E3B
2.6477 to 2.6483 in.
D782-E3B
Z602-E3B 72.250 to 72.269 mm
D902-E3B 2.8445 to 2.8452 in.
Z482-E3B
67.400 mm
D722-E3B
2.6535 in.
D782-E3B
Z602-E3B 72.400 mm
D902-E3B 2.8504 in.
(2) Cylinder I.D. [Oversize]
W10367470
0.030 to 0.14 mm
0.0012 to 0.0055 in.
W10378950
0.070 to 0.15 mm
0.0028 to 0.0059 in.
W10381420
KiSC issued 03, 2011 A