wsm B2420 - Differential Gear

TRANSMISSION
B2420, WSM
3-S22
(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.
9Y1210436TRS0036US0
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.
9Y1210436TRS0037US0
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.
(Reference)
• Thickness of adjusting shim
0.8 mm (0.03 in.) shim. [Code No. 67211-15170]
1.0 mm (0.039 in.) shim. [Code No. 67211-15160]
1.2 mm (0.047 in.) shim. [Code No. 67211-15180]
9Y1210436TRS0038US0
Clearance between
differential case (spiral
bevel gear) and
differential side gear
Factory specification
0.025 to 0.066 mm
0.00099 to 0.0025 in.
Allowable limit
0.30 mm
0.012 in.
Differential case I.D. Factory specification
32.000 to 32.025 mm
1.2599 to 1.2608 in.
Spiral bevel gear I.D. Factory specification
32.000 to 32.025 mm
1.2599 to 1.2608 in.
Differential side gear
O.D.
Factory specification
31.959 to 31.975 mm
1.2583 to 1.2588 in.
Clearance between
differential pinion shaft
and differential pinion
Factory specification
0.048 to 0.084 mm
0.0019 to 0.0033 in.
Allowable limit
0.30 mm
0.012 in.
Differential pinion I.D. Factory specification
14.032 to 14.050 mm
0.55244 to 0.55314 in.
Differential pinion shaft
O.D.
Factory specification
13.966 to 13.984 mm
0.54985 to 0.55055 in.
Backlash between
differential pinion and
differential side gear
Factory specification
0.1 to 0.3 mm
0.004 to 0.01 in.
Allowable limit
0.4 mm
0.02 in.
KiSC issued 06, 2012 A