GMC T Series 1994 Repair Manual page 887

X JS ji Clean
1. Bearings.
2. Shafts.
3. Sprockets.
4. Chain.
5. Oil feed ports and channels in each case half.
Apply compressed air to each oil feed port and
channel in order to remove any obstructions or
cleaning solvent residue.
6. All mating surfaces.
Inspect
1. Bearings and thrust washers for wear, spalling,
brinelling, or corrosion.
2. Gear teeth for excessive wear or damage, spalling,
cracks, or corrosion.
3. Gear splines for excessive wear, spalling, cracks,
twist, or corrosion.
CLEANING AND INSPECTION
4. Shaft splines for excessive wear, spalling, cracks,
distortion, or corrosion.
5. Retainer rings for excessive wear, distortion, or
damage.
6. Case halves for damaged or warped mating sur­
faces, cracks, porosity, or damaged thread holes,
7. Synchronizer assembly for cracks chips, spalling,
or excessive wear.
8. Synchronizer hub and sleeve for cracks, chips,
spalling, or excessive wear.
9. Pads on the mode fork and the range fork for wear
or distortion.
10. Oil pump pins and housing, mainshaft pin pump
bores for wear, spalling, cracks, and damage.
Replace complete assembly if there is wear.
11. Input gear, planetary carrier, and range shift hub
tooth chamfers for excessive wear.
12. Speedometer tone wheel (1) for wear, spalling, and
cracks.