GMC T Series 1994 Repair Manual page 629

Transmission End Play Check
Figures 15 and 16
Tools Required:
J 24773-A Oil Pump Remover
J 25022-A End Play Adaptor (245 mm)
J 34725 End Play Adaptor (298 mm)
J 25025-7A Post
Dial indicator
As a diagnostic aid, transmission end play should
be checked prior to removing the internal parts. If the
end play is not within specifications, you should watch
for possible worn or m isassem bled parts during
disassembly.
|^3| Measure
1. Remove an oil pump bolt (2) and install a 278
mm (11 inch) bolt and locknut or J 25025-7A.
2. Install J 25022-A or J 34725 as shown.
3. Install J 24773-A as shown.
4. Install dial indicator.
A. Set to zero.
B. Pull up on J 24773-A.
C. End play should be 0.13 to 0.92 mm (0.005
to 0.036 inch).
A 298m m TURBINE SHAFT
B 245m m TURBINE SHAFT
Oil Pump Assembly
Figures 17 and 18
Tools Required:
0
Remove or Disconnect
1. O-ring seal (618).
2. All oil pump bolts (2) and O-rings (3).
3. Slide J 39119 over stator shaft until it locks
under splines.
4. Oil pump assembly (4) with J 37789-A.
5. Oil pump to case seal (5) and gasket (6).
6. Reverse input clutch to oil pump thrust washer
(601).
RH0114-4L60-E
J 37789-A Oil Pump Remover and Installer
J 39119 Adapter