GMC 1976 ZEO 6083 Maintenance Manual page 171

3C- 8 FINAL DRIVE
Figure 16-Connecting Lift to Final Drive
12 . Pivot final drive support bracket upward for
clearance.
13 . Lower transmission lift and remove final
drive from lift .
14 . Using a 9/16" socket remove the left output
shaft retainer bolt, then pull output shaft from final
drive. (figure 12)
15 . Remove transmission to final drive gasket.
INSTALLATION
See CAUTION on Page 3C-1 of this section.
1 . Apply Special Seal Lubricant No . 1050169 or
equivalent to both output shaft seals.
2. Install the left output shaft into the final drive.
Retain with bolt . Torque bolt to 45 ft . lbs. (figure 12)
3. Position final drive on transmission lift and
install an anchor bolt through housing and lift pad.
(figure 16)
4. Apply a thin film of Special Seal Lubricant No.
1050169 or equivalent on the transmission side of a
new final drive to transmission gasket, then position
gasket on transmission .
5. Raise transmission lift . Align the bolt stud
"H" on the transmission with the mating hole in the
final drive. Move final drive until it mates with the
transmission . (Figure 12)
NOTE :
It may be necessary to rotate the left out-
put shaft so that the splines of the final drive
pinion engage the splines of the transmission
output shaft. Do not allow gasket to become
mispositioned while engaging splines.
6. Install bolts "E", "F" and "G" and nut "H"
(figure 12). Install bolts "A", "B" and "C". (figure
12) Torque all final drive to transmission bolts to 30
ft . lbs. Torque nut to an approximate 30 ft . lbs.
7. Install bolt "X" and torque to 110 ft . lbs.
Tighten and torque bolts "Y" and "Z" to 55 ft . lbs.
(figure 15)
8. Loosen and remove lift from final drive.
9. Position a new cover gasket on the final drive,
then install cover. Torque cover bolts to 30 ft . lbs.
10 . Install right output shaft into final drive in-
dexing splines of output shaft with splines of side
gear . Install support bolts.
NOTE :
When attaching the right hand output
shaft to the engine, do not let the shaft hang .
Assemble support bolts loosely, and by moving
the flange end of the shaft up and down, and
back and forth, find the center location . Hold
the shaft in this position and then torque the
bolts to 55 ft . lbs. on support. (Figure 11).
11 . Connect drive axles to output shafts using
NEW bolts. Torque bolts to 75 ft. lbs.
12 . Raise hoist, remove floor stands and lower
vehicle.
13 . Install a new "O" ring and install filler tube .
14 . Connect battery.
15 . Fill final drive with four pints of Lubricant
No . 1051022 or equivalent . Fluid level should be
maintained at "Fill Level" stamped on final drive
cover.
16 . Start engine and check transmission fluid
level . Add fluid as necessary.
17 . Check for any oil leaks .
REMOVAL
PINION HOUSING SEALS
1 . Remove final drive. Refer to final drive re-
moval steps 1-13 .
2. Remove the bearing housing bolts. Remove the
drive pinion and housing as shown in Figure 24 .