Oil Clearance Between Idle Gear Shaft And Idle Gear Bushing; Replacing Idle Gear Bushing; Balancer Shaft Side Clearance; Balancer Shaft Alignment - Kubota D1503-M Workshop Manual

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

Oil Clearance between Idle Gear Shaft and Idle Gear Bushing

1. Measure the idle gear shaft O.D. with an outside micrometer.
2. Measure the idle gear bushing I.D. with an inside micrometer,
and calculate the oil clearance.
3. If the oil clearance exceeds the allowable limit, replace the
bushing.
If it still exceeds the allowable limit, replace the idle gear shaft.
Factory spec.
Oil clearance between
idle gear shaft and idle
gear bushing
Allowable limit
Idle gear shaft O.D. Factory spec.
Idle gear bushing I.D. Factory spec.

Replacing Idle Gear Bushing

(When removing)
1. Press out the used idle gear bushing using an idle gear bushing
replacing tool. (See page "SPECIAL TOOLS".)
(When installing)
1. Clean a new idle gear bushing and idle gear bore, and apply
engine oil to them.
2. Press in a new bushing using an idle gear bushing replacing tool,
until it is flush with the end of the idle gear.
(A) When Removing
Balancer Shaft Side Clearance (for Balancer Model Only)
1. Set a dial indicator with tip on the balancer shaft.
2. Measure the side clearance by moving the balancer shaft to the
front and rear.
3. If the measurement exceeds the allowable limit, replace the
balancer shaft.
Factory spec.
Balancer shaft side
clearance
Allowable limit
Balancer Shaft Alignment (for Balancer Model Only)
1. Support the balancer shaft with V blocks on the surface plate and
set a dial indicator with its tip on the intermediate journal at high
angle.
2. Rotate the balancer shaft on the V block and get the
misalignment (half of the measurement).
3. If the misalignment exceeds the allowable limit, replace the
balancer shaft.
Balancer shaft
Allowable limit
alignment
S-85
DIESEL ENGINE
0.025 to 0.066 mm
0.00099 to 0.0025 in.
0.10 mm
0.0039 in.
37.959 to 37.975 mm
1.4945 to 1.4950 in.
38.000 to 38.025 mm
1.4961 to 1.4970 in.
W1030933
(B) When Installing
W1031083
0.070 to 0.22 mm
0.0028 to 0.0086 in.
0.30 mm
0.012 in.
W1030111
0.02 mm
0.0008 in.
W1042630
KiSC issued 07, 2008 A