Automatic Transmission - GMC T Series 1994 Repair Manual

Figure 8— Removing the Input Gear Bearing
IJJi Clean
1. Bearings.
• Remove all old lubricant and dirt.
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 to remove any obstructions or cleaning
solvent residue.
6. All mating and sealing surfaces
Inspect
1. Bearings and thrust washers for spalling, brinnel-
ing, or corrosion.
2. Gear teeth for excessive wear or damage, spalling,
cracks, or corrosion.
BEARING AND SEAL
REPLACEMENT
-► 4-
Install or Connect (Figures 10 through 14)
Tools Required:
J 8092 Driver Handle
J 36370 Drive Gear Needle Bearing Installer
J 36371 Front and Rear Output Shaft Bearing
Installer
J 36372 Input Gear Bearing Installer (Needle
bearing)
CLEANING AND INSPECTION
ASSEMBLY
Bearing
3. Gear splines for excessive wear, spalling, cracks,
twist, or corrosion.
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 stop rings for cracks, chips, spalling,
or excessive wear.
8. Synchronizer hub and sleeve for cracks, chips,
spalling, or excessive wear.
9. Pads on mode fork and range fork for wear and
distortion.
10. Oil pump gears and case halves 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.
J 36373 Input Gear Bearing Installer (Ball Bear­
ing)
• Use Dexron® HE automatic transmission fluid or
equivalent where needed in assembly.
1. Needle bearings (82) into the drive sprocket (20)
using J 36370 and J 8092 (figure 10).
• Drive the bearings (82) into the drive sprocket
so that they are flush on the synchronizer side.
2. Needle bearing (24) into the rear case half (17)
using J 36372 and J 8092.
• Bearing must be flush with boss on the case
housing.