TM 5-3895-359-14&P
ADJUST DIFFERENTIAL BEARING PRE-LOAD
A. Remove thrust block using drift to drive pin out
of cover.
B. Install differential bearing spacers in the original
positions if new bearing cups are installed.
SPACERS MUST BE INSTALLED WITH THE
CHAMFERED EDGE TOWARD THE MACHINED
SURFACES IN THE HOUSING.
Bearing pre-load may be increased or
decreased by using a thicker or thinner spacer
respectively in the cover half of the assembly.
The gear may be moved toward the pinion,
decreasing the gear lash, by decreasing the
thickness of the spacer in the case half and
increasing the thickness of the spacer by the
same amount in the cover half. Reversing this
transposition will move the gear away from the
pinion and increase the gear lash.
C. Insert pipe used for disassembling through case
The correct pre-load of .006"to .010"tight is
half.
obtained as follows:
1. Increase or decrease the thickness of the
spacer used in the COVER HALF to obtain a
freely rotating gear with from .000" to .005"
end play.
2. Remove spacer in cover half and install a
spacer "006" plus the end play" thicker than
.
the spacer used to obtain the adjustment in
the above paragraph.
3. If a new gear or case has been installed,
check runout at back face of gear. Correct
and recheck if runout exceeds .005"
.
4. When adjustment is satisfactory, remove
D. Position differential and gear assembly over
cover and move differential and gear out on
pipe with gear facing the case half and slide into
support sufficient to permit installation of
position.
pinion and cage assembly.
E. Install new gasket over case flange.
H. Install thrust block and pin.
F. Position cover half over pipe and draw axle
INSTALL PINION AND CAGE ASSEMBLY
halves together with six bolts equally spaced.
G. Check differential and gear assembly end play
A. Coat cage flange contact surface with non-
with dial indicator through thrust block pin hole
hardening sealing compound. Position cage
against gear.
assembly over studs and tap into position with
Both the differential bearing pre-load and
soft mallet.
gear lash are controlled by selective spacers,
B. Install lockwashers and stud nuts. Tighten to
available in increments of .003" which are
,
specified torque.
installed between the differential bearing cups
and the case and cover halves of the axle
housing.
5-18
