1074 / 1863
REAR AXLE
25
INSPECTION
1. Inspect gear teeth of side gears and pinion
mate gears for wear and cracks.
2. Inspect external teeth of side gears for wear
and cracks.
NOTE
If replacement of one gear is required, then BOTH
side gears, pinion mate gears and washers have
to be replaced.
3. Inspect cross pin for excessive wear. Replace
if necessary.
NOTE
Always replace gears as a complete set. Do not
mix new gears with old gears, as this may cause
uneven wear and short gear life.
RING GEAR AND PINION ASSEMBLY THEORY
1. Ring gear and pinion is supplied as a set. They
are matched with each other during
manufacture. Matching numbers on both
pinion and ring gear are etched for verification.
Refer Fig A and B given below:
2. If a new gear set is used, verify numbers on
pinion and ring for matching before proceeding
with assembly.
3. Standard mounting distance from center line of
ring gear to back face of pinion is 103.5 ± 0.1
mm. This dimension is controlled by selecting
shims, which are positioned between the inner
pinion bearing cone and pinion gear. Best
running position of gear set is achieved by
proper shim selection.
4. This dimension for front live axle will be
different. On the bottom face of pinion, number
is etched. It can be a plus (+) number, a minus
(-) number or Zero (0). Required pinion shim
selection is achieved with help of this number.
If alphabet "m" appears on pinion face shim,
selection has to be done in mm
(Metric).
If
alphabet "m" does not appear on pinion face,
shim selection has to be done in inches.
5. Shims with different thicknesses are available
for selection.
Use tables on next page as a guide for selecting
correct thickness of shims either for addition or for
subtraction from old shim pack.
Refer figure A which shows ring and pinion etched
with inch identification. Refer Table A.
Fig: A
Refer figure B shows ring and pinion etched with
metric identification. Refer Table B.
Fig: B