TRUCK SERVICE MANUAL
Turn adjusting screw (at front of unit) in, to
contact shift fork.
After contact with fork has been made, turn
adjusting screw in, 3/4 of a turn.
Lock adjusting screw in position with jam nut.
B. Install shift unit into carrier engaging shift collar on
pinion quill assembly with shift fork.
C. Assemble shift lever attaching nut, button, lever, cup
D. Install shift shaft housing assembly, lockwashers and
A. If the cover assembly was disassembled, install the
forward and read bearing cups.
NOTE: Do not adjust shift shaft until interaxle differential has
B. Install the spacer on the input shaft.
C. Place unit in press and position the cover assembly
ASSEMBLE INTERAXLE DIFFERENTIAL
over the input shaft and press outer bearing in cover
A. Lubricate differential case walls and all component
until the bearing seats against the spacer.
parts with axle lubricant.
D. Install the cover oil seal with a suitable driver.
B. Position thrust washer and rear side gear into rear
case section and assemble intermediate case section
BEARING END PLAY CHECK
over real case and side gear.
NOTE: Bearing must be adjusted to .003 to .005 end play
which is controlled by the hardened spacer between the
C. Place spider with pinions and thrust washers in
A. Install gasket and position interaxle differential and
cover assembly onto drive unit. Lineup splines of
through shaft and pinion with splines of side gears.
B. Install interaxle differential cover to housing
C. Install yoke or flange and hand tighten nut.
D. With rawhide mallet tap input shaft to be certain
D. Install forward side gear and thrust washer.
Use a dial indicator with a magnetic base and
NOTE: If inner bearing was removed from forward case (Input
mount base against cover.
shaft), position bearing on shaft and press into position using
suitable sleeve. Press bearing flush against case half
Place stem of indicator against end of input
E. Align mating marks, of the three case sections.
F. Install the case cap screws, tighten to correct torque
and lock wire.
G. Check for free rotation of gears and correct if