TM 9-2330-271-14&P
Section IV. REMOVAL AND INSTALLATION OF MAJOR
COMPONENTS AND ASSEMBLIES
5-7. Axle
NOTE
The key numbers shown below in
a. General. Generally, axle assemblies will not
parentheses refer to figure 50, except
be removed unless inspection discloses a need for repair
where otherwise noted.
or replacement.
For inspection purposes, remove
(1) Raise and support semitrailer, remove
wheels (paragraph 3-18a) and hubs and brake drums
wheel and tire assemblies and springs (paragraph 4-53).
(2) Disconnect hydraulic hose connections
b. Removal.
WARNING
Weight of semitrailer must be supported
(3) Raise front and rear axles (43) just
enough to relieve weight of each axle from lower torque
by leveling jacks or by blocking or
rods (38). Provide a secure means of support to hold
support stands placed under rear corners
this position.
of frame throughout operation.
(4) Remove eight nuts (40) and lock washers
(1) Position semitrailer on level surface with
(39) securing lower torque rod ends to axle and bracket
front end resting on landing gear support legs.
assembly (50) and main axle lower torque rod brackets
(2) Extend leveling jacks enough to relieve
(45).
tires of ground contact and provide support during the
(5) Loosen torque rod ball ends (paragraph 4-
removal and installation operation.
55a).
(3) Open air reservoir drain cock to relieve air
(6) Remove four lower torque rods from their
pressure.
respective mountings by prying rod ends out and away
(4) Remove wheels (paragraph 3-18a).
from axle and bracket assembly and by prying in and
(5) Remove hubs and drums (paragraph 4-
away from front and rear axle lower torque rod brackets.
47).
(7) With axle and bracket assembly
(6) Disconnect hydraulic brake hose at tee on
supported (step 3, paragraph 4-53), remove twelve nuts
rear center of axle.
(2) and lock washers (3) securing axle and bracket
(7) Support axle with a jack.
assembly (50) to frame suspension bracket (1).
(8) Remove two nuts and lock washers from
(8) Lower axle and bracket assembly from
each spring assembly U-bolt and remove U-bolts (fig. 4-
suspension brackets and away from vehicle.
38).
b. Installation
(9) Lower axle assembly and remove from
(1) Install axle and bracket assembly in the
under semitrailer.
reverse order of the procedure in paragraph a above.
c. Installation.
(2) Install four lower torque rods ends in the
(1) Raise axle assembly with jacks, and block
axle and bracket assembly in the reverse order of the
up to proper position. Nut of spring center bolt must seat
procedure in paragraph 5-8a (6), following instructions in
in recess of axle spring seat.
(2) Attach axle assembly with four U-bolts,
eight lock washers and nuts. Tighten U-bolt nuts to 500
lb-ft.
(3) Connect hydraulic brake hose to axle tee.
(4) Install hubs, brake drums and wheels.
(5) Bleed brakes (paragraph 4-33).
5-8.
Axle and Bracket Assembly, XM574,
XM574E1,
XM654,
XM680,
XM680E1,
XM738, XM739, XM739E1, XM822, XM823,
XM824
a.
Removal.
5-3
