GMC T Series 1994 Repair Manual page 814

8. COVER, SHIFT LEVER
10. PIN, SHIFT ROD INTERLOCK
11. FORK, THIRD AND FOURTH SHIFT
14. RAIL, FIRST AND SECOND SHIFT
15. RAIL, THIRD AND FOURTH SHIFT
16. FORK, FIRST AND SECOND SHIFT
38. LUG, FIRST AND SECOND SHIFT
40. LUG, THIRD AND FOURTH SHIFT
42. BOLT, REVERSE INHIBITOR CAM
43. INHIBITOR, REVERSE
45. FORK, REVERSE AND OVERDRIVE
46. RAIL, REVERSE AND OVERDRIVE
0
Install or Connect (Figures 1, 2, 3, 4, 15
through 21)
Tools Required:
J 22828 Countershaft Bearing and Input Shaft
Bearing Installer
J 23642-01 Transmission Holding Fixture
J 24462 Transmission Adapter Plate
J 38805 Output Shaft Nut Socket (4WD Models)
J 38856 Countershaft Bearing Cone and Retain­
er Installer
J 39314 Vibration Damper Installer (4WD Mod­
els)
N O T IC E : F o r s t e p s 11, 2 2 , 2 4 , 2 6 , 2 8 a n d 31 ,
"
r e f e r to " N o t i c e o n p a g e 7 B 2 -1 .
1. Overdrive shift lever.
2. Overdrive shift lever shaft (139).
3. Overdrive shift lever retaining pin.
• Hold overdrive shift lever back out of the way
using a rubber band (figure 15).
• Ensure the notches that retain the overdrive
fork (137) are to the outside of the case.
4. Countershaft front bearing cup (118) using J 38856
(figure 15).
5. Countershaft assembly (102).
6. Countershaft rear bearing (100) using J 22828 (fig­
ure 16).
Figure 14— Shift Cover and Components
UNIT ASSEMBLY
7. Reverse idler gear (110), bearings (109), spacer
8. Reverse idler gear shaft (112).
9. Countershaft rear bearing cup (122).
10. Countershaft shim(s) (123) and bearing retainer
11. Bearing retainer plate bolts (128).
%
• Raise and support the countershaft assembly
(102) while installing the rear bearing (100) to
prevent damage to the front bearing (118).
(111), and washers (108).
plate (127).
• Bolts (128) to 35 N-m (26 lbs. ft.).
Measure
Countershaft end play (figure 17).
A. Set the dial indicator up on the end of the coun­
tershaft.
B. Use screwdriver or equivalent to lift counter­
shaft up and down to measure end play.
C. Countershaft end play should be 0.05-0.15 mm
(0.002-0.006 in.).Adjust by adding or removing
shim(s) (123) under bearing retainer plate (127).
D. Remove bolts and apply Loctite® Dri-Loc 201
or equivalent to the bolts and retorque.
V2982