TM 9-2330-356-14
Section IV. REMOVAL AND INSTALLATION OF MAJOR COMPONENTS
M969, and M970 except 970 SN TC-0843, TC-
(Later Models) (Fig. 5-1)
0844, and TC-103 thru TC-178) (Fig. 5-2).
a. Removal.
a.
Removal.
(1) Remove cotter pins and slotted nuts from
(1) Provide a balanced support for upper coupler
threaded end of ball assemblies.
plate (4).
(2) Tap threaded end of ball assembly with a soft
(2) Remove twelve locknuts (1), bolts (3), and
hammer to loosen ball assembly from bracket.
washers (2). Discard locknuts.
(3) Use a crowbar or cold chisel to pry the torque
rod from the brackets. The ball assemblies are mounted in
(3) Remove upper coupler plate (4) from under
robber and can be moved out of normal alinement for
semitrailer.
removal or installation.
b.
Installation.
Installation.
b.
(1) Place upper coupler plate (4) on a
(1) insert threaded end of ball assembly in hole
suitable support.
of bracket on the bogie assembly. Using torque rod as a
lever, bend the ball assembly out of normal alinement so
(2) Lift upper coupler plate (4) into position
ball assembly on other end is near the hole in the axle
under semitrailer. Loosely install twelve bolts (3), washers
bracket.
(2), and new locknuts (l).
(2) Use a crowbar or cold chisel to bend the ball
assembly so it can be pushed into hole in axle bracket. Use
(3) Ensure that upper coupler plate (4) is flush
care not to damage the ball assembly.
against semitrailer. Tighten twelve locknuts (1) to
130-140 lb.-ft.
(3) Install slotted nuts on lower torque rod and
tighten to 350-400 lb.-ft.
(4) Lubricate upper coupler plate (4) (Chapter 3,
(4) Install cotter pins to secure the slotted nuts.
Section I).
Change 3
