TM 9-2320-273-20
FRAME.
11-13. FIFTH WHEEL MAINTENANCE (Continued).
LOCATION/lTEM
ACTION
REMARKS
B. ADJUSTMENT (M916 and M920 ONLY) (Continued).
NOTE
To install the fifth wheel lock tester, the
fifth wheel lock jaws must be open. Do step
1 to open lock jaws, if necessary.
1. Secondary lock handle (10),
a. PulI out secondary lock
release handle (9) and lock
handle (10), until it
jaws (6).
catches on 5th wheel plate
assembly (7).
b. Pull out release handle (9),
and pry open lock jaws (6).
2. Fifth wheel lock tester (1).
a. Grasp handle of king pin
plate (4) and place king pin
(3) into lock jaws (6).
b. Place lever (2) over front of
5th wheel plate assembly.
c. While pushing down on
Be sure king pin plate (4)
king pin plate (4), rotate
is flat against the 5th wheel
lever (2) away from 5th
plate assembly (7) during
wheel plate assembly (7)
this operation.
until king pin (3) is locked
in lock jaws (6).
d. Position bar (5) over edge
of cross tie (8).
e. Pry forward with lever (2)
Do step 3 to adjust lock jaws
and rearward with bar (5)
(6), if necessary.
to check for play (1/8”
(.31 cm) or less).
3. Hexagon head nut (11).
Tighten or loosen to obtain
If there is still play after
a snug fit against 5th wheel
adjusting lock jaws (6) refer
plate assembly (7).
to Direct Support and Gen-
eral Support Maintenance.
4. Fifth wheel lock tester (1).
a. Rotate lever (2) towards
5th wheel plate
assembly (7).
b. Position bar (5) on edge
of cross tie (8), using lev-
erage remove king pin (3)
from lock jaws (6).
Change 2 11-31
