TM 9-2330-373-14 & P
4-35. AIR MOUNTED KINGPIN (cont)
ADJUSTMENT OF HEIGHT CONTROL VALVE
CAUTION
Do not pull adjusting arm all the way down. It will be crushed against fifth
wheel plate.
1.
The design dimension between bottom of bolster
and upper face of fifth wheel plate is eight inches
when fifth wheel plate is In position parallel to
semitrailer frame. The design height can vary
plus or minus one-eighth of an inch without
adverse effect on operation.
2.
Loosen the height control valve adjusting rod
and raise adjusting arm when height is too low.
Tighten adjusting rod.
3.
Loosen the height control valve adjusting rod
and lower adjusting arm when height is too high.
Tighten adjusting rod (refer to appendix H for
torque limits).
REMOVAL OF AIR SPRING
1.
Extend landing gear legs and uncouple semitrailer from towing vehicle.
2.
Disconnect linkage from height control valve and depress actuating arm to exhaust air pressure from air springs.
3.
Place fork lift or other suitable lifting or blocking device under fifth wheel plate to carry weight of assembly.
TA 314823
4-103
