TM 9-2330-271-14&P
(6) Lower fifth wheel plate sufficiently to allow
removal of air spring (12). Pull air spring forward to clear
(6) Remove nuts (7) from each end of hinge
fifth wheel plate and remove air spring.
rod bolt (1) and remove rod bolt.
b. Installation of Kingpin Air Spring (fig. 44)
(7) Lower plate assembly (11) from
semitrailer.
(1) Slide replacement air spring into position
(8) Drive rubber bushing (15) from hinge
on fifth wheel plate, aline bottom mounting holes, insert
fitting.
screws (13) and tighten.
f.
Installation of Fifth Wheel Plate Hinge
(2) Raise fifth wheel plate (11) to match air
spring top mounting holes with holes in channels in van
body sub-base. Install screws (5) and lock washers (6)
NOTE
Install rubber bushing assembly using
(3) Connect air line to inlet at top of air spring
new inner sleeve. Sleeve must be driven
(12). Connect valve linkage
into bushing before bushing installation.
(4) Couple semitrailer to tractor, build up air
(1) Mate fifth wheel plate (11) to semitrailer
pressure, and check for air leaks with soap solution.
hinge fittings and insert rod bolts (1). Secure with nuts
(7).
(1) Apply 65 psi air pressure to suspension,
(2) Connect shock absorbers (10).
or block up semitrailer to design height of 8 inches, plus
(3) Connect air line at top of air spring.
or minus one-eighth of an inch between upper face of
(4) Raise fifth wheel plate to mate air spring
fifth wheel plate and bottom of bolster with fifth wheel
top mounting holes with matching holes in channels in
van body sub-base. Install screws (5) and lock washers
(2) Remove nuts (8) and screws (9) securing
(6).
top and bottom shock absorber fittings to mountings.
(5) Connect control valve linkage.
(3) Remove shock absorber (10).
(6) Couple semitrailer to tractor, build up air
pressure, and check for air leaks with soap solution.
(1) Position shock absorber (10) with large
end up
4-60.
Resilient Kingpin, XM844, XM845
(2) Install screws (9) and nuts (8) and tighten
a. General.
(3) Remove blocking equipment, if used.
The resilient kingpin incorporated in the XM844 and
XM845 semitrailers provides a 360 degree cushion
e. Removal of Fifth Wheel Plate Hinge
laterally and longitudinally.
(1) Extend landing gear legs and uncouple
(1) Extend landing gear and uncouple tractor
tractor from semitrailer.
from semitrailer.
(2) Disconnect linkage from height control
(2) Remove weight from fifth wheel plate
valve and depress actuating arm to exhaust air pressure
assembly (1) by use of a fork lift.
from air springs.
(3) Remove 36 cap screws (6) and lock
(3) Place suitable lifting or blocking device
washers (5) and lower fifth wheel plate assembly (1).
under fifth wheel plate to carry weight of assembly when
removed.
(1) Position fifth wheel plate assembly (1) and
(4) Disconnect air line at top of air spring (12)
secure with 36 cap screws (6), and lock washers (5).
and remove upper mounting screws (5) and lock
(2) Remove support from semitrailer.
washers (6A)A.
4-66