GMC T Series 1994 Repair Manual page 745

Figure 85 Installing Rear Band and Selective Thrust
Washer
CENTER SUPPORT AND GEAR UNIT
ASSEMBLY
Figures 86,87 and 88
Tools Required:
J 38868 Gear Unit Assembly Remover and
Installer
J 23093 Center Support Locating Tool
J 8001 Dial Indicator Set
J 6125-IB Slide Hammer
J 28585 Snap Ring Tool
E3
Install or Connect
1. Spacer (643) to the bottom of case splines. Leave
opening of snap ring at 9 o 'clock position.
• Third snap ring groove down.
2. J 38868 to main shaft (662).
3. With transmission in a vertical position, align
bolt hole in center support (640) with hole in
case (7) and carefully lower gear unit/center
support assembly into case using J 38868.
4. Beveled snap ring (633). Flat side down using
J 28585.
• The end gap should be located at the nine
o'clock position with the beveled edge of
the snap ring facing up.
REAR UNIT END PLAY CHECK
Figures 89 and 90
[ g | Measure
Tool Required:
J 8001 Dial Indicator Set
1. Attach J 8001 rod to one of the bolt holes at the
end of the transmission case (7).
2. Mount J 8001 on the bolt and index it to end of
the output shaft (671). Set indicator to "0."
3. Move the output shaft in and out noting the
amount of end play. Correct end play is between
0.127 to 0.635 mm (0.005 to 0.025 inch).