Gears Cleaning and Inspection
- Inspect the idler gear (2) for wear, pitting,
or discoloration by heat.
- Inspect the drive and drivenshafts for worn or damaged
gears (1).
- Inspect the differential carrier and ring gear for
the following:
| • | Scored, pitted, or damaged bearing (3) |
| • | Worn gear set or loose center pin (4) |
| • | Worn or loose gears (5) |
- Inspect the gears (3) for abnormal wear.
Bearings and Shafts Cleaning and Inspection
- Inspect the flange sealing surface (1) for
wear, damaged bolt threads (2) and worn or damaged splines (3).
- Inspect the drive and drivenshafts for the following:
| • | Worn or scored driveshaft sealing surface (2) |
| • | Worn or damaged splines (3) |
| • | Pitted, scored, or damaged bearings (5) |
- Inspect the differential carrier gear needle bearings (4
and 6) for wear. Inspect for a worn or scored pin (9).
- Inspect the bearing rollers and races for the following:
| • | Excessive wear or other damage |
- Inspect the bearing rollers and races for heat discoloration.
Heat discoloration ranges from a faint yellow to a dark blue color. This discoloration
may result from an overload or improper lubrication. Excessive heat causes softening
of the rollers and races. Bearings or races with a sign of heat discoloration must
be replaced.
- Inspect for a bent bearing cage.
