Correcting Cylinder (Oversize); Rotor Lobe Clearance; Clearance Between Outer Rotor And Pump Body; Oil Pump - Kubota Z482-E2B Workshop Manual

SM-E2B 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 μmRz
Finishing (0.000087 to 0.00012 in.Rz)
∇∇∇.
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
64.250 to 64.269 mm
D662-E2B
2.52953 to 2.53027 in.
Z482-E2B
67.250 to 67.269 mm
D722-E2B
2.64764 to 2.64839 in.
D782-E2B
Z602-E2B 72.250 to 72.269 mm
D902-E2B 2.84449 to 2.84524 in.
64.400 mm
D662-E2B
2.53543 in.
Z482-E2B
67.400 mm
D722-E2B
2.65354 in.
D782-E2B
Z602-E2B 72.400 mm
D902-E2B 2.85040 in.
(2) Cylinder I.D. [Oversize]
W10367470
0.03 to 0.14 mm
0.0012 to 0.0055 in.
W10378950
0.07 to 0.15 mm
0.0028 to 0.0059 in.
W10381420
KiSC issued 06, 2006 A