Differential Gear - Kubota B1220 Workshop Manual

B1220, B1620, B1820, WSM

(3) Differential Gear

Clearance between Differential Case (Spiral Bevel Gear) and
Differential Side Gear
1. Measure the differential side gear boss O.D. with an out side
micrometer.
2. Measure the differential case I.D. and the spiral bevel gear I.D.
with an inside micrometer, and calculate the clearance.
3. If the clearance exceeds the allowable limit, replace faulty parts.
Clearance between
Factory specification
differential case (spiral
bevel gear) and
Allowable limit
differential side gear
Differential case I.D. Factory specification
Spiral bevel gear I.D. Factory specification
Differential side gear
Factory specification
O.D.
Clearance between Differential Pinion Shaft and Differential
Pinion
1. Measure the differential pinion shaft O.D. with an outside
micrometer.
2. Measure the differential pinion I.D. with an inside micrometer,
and calculate the clearance.
3. If the clearance exceeds the allowable limit, replace faulty parts.
Factory specification
Clearance between
differential pinion shaft
and differential pinion
Allowable limit
Differential pinion I.D. Factory specification
Differential pinion shaft
Factory specification
O.D.
Backlash between Differential Pinion and Differential Side
Gear
1. Secure the differential case with a vise.
2. Set the dial indicator (lever type) with its finger on the tooth of
the differential side gear.
3. Press differential pinion and side gear against the differential
case.
4. Hold the differential pinion and move the differential side gear to
measure the backlash.
5. If the backlash exceeds the allowable limit, adjust with
differential side gear shims.
Factory specification
Backlash between
differential pinion and
differential side gear
Allowable limit
NOTE
• Thickness of shims : 0.8 mm (0.3 in.), 1.0 mm (0.039 in.),
1.2 mm (0.047 in.)
3-S23
TRANSMISSION
0.025 to 0.066 mm
0.00099 to 0.0025 in.
0.30 mm
0.012 in.
32.000 to 32.025 mm
1.2599 to 1.2608 in.
32.000 to 32.025 mm
1.2599 to 1.2608 in.
31.959 to 31.975 mm
1.2583 to 1.2588 in.
9Y1210272TRS0034US0
0.048 to 0.084 mm
0.0019 to 0.0033 in.
0.30 mm
0.012 in.
14.032 to 14.050 mm
0.55244 to 0.55314 in.
13.966 to 13.984 mm
0.54985 to 0.55055 in.
9Y1210272TRS0035US0
0.1 to 0.3 mm
0.004 to 0.01 in.
0.4 mm
0.02 in.
9Y1210272TRS0036US0
(EU)
KiSC issued 07, 2011 A