TM 9-2330-271-14&P
j.
(4) Remove jacking and blocking equipment.
(1) Remove nut (6) and screw (8) securing
(1) Apply 65 psi air pressure to suspension or
lower end of adjusting rod (7).
block up semitrailer to design height of 14 inches as
(2) Remove nut (6) and screw (8) securing
measured from centerline of dolly axle to underside of
upper end of adjusting rod (7) to height control valve (9).
frame.
Remove adjusting rod.
(2) Remove nuts (4) and flat washers (3)
(3) Remove two nuts (4), lock washers (3),
securing top and bottom shock absorber mounting eyes
and , screws (10) securing height control valve (9)
to shock mount studs. Remove shock absorber (2).
Remove height control valve.
i.
k. Installation of Height Control Valve (fig. 52).
(1) Position eyes of new shock absorber (2),
(1) Position height control valve (9) and
large end up, on ends of mounting studs and lightly tap
secure with two screws (10), lock washers (3), and nuts
shock absorber onto studs using hammer and wood
(4).
block.
(2) Position upper end of adjusting rod (7) on
(2) Replace nuts (4) and flat washers (3).
height control valve and secure with screw (8) and nut
Tighten to a torque of 150 lb-ft.
(6).
(3) Remove blocking and jacking equipment,
(3) Position lower end of adjusting rod (7) and
if used.
secure with screw (8) and nut (6).
Section XIV. MAINTENANCE OF AIR MOUNTED FIFTH WHEEL
KINGPIN AND RESILIENT KINGPIN
a.
General
4-58.
Air Mounted Fifth Wheel Kingpin, XM847,
(1) The XM847, XM848, XM849, XM850,
XM848, XM849, XM850, XM912, XM913
XM912, and XM913 semitrailers are equipped with an air
Figure 4-44. Air mounted fifth wheel kingpin system.
4-64