TM 9-2330-373-14 & P
4-34. AIR SUSPENSION SYSTEM (cont)
Disconnect the linkage from both height control
valve actuating arms.
Move both of the actuating arms to a vertical
down position and hold until all air is exhausted
from air springs.
Connect one valve actuating arm only to its
linkage. Air spring controlled by this valve will
inflate until the valve shuts off inlet air pressures.
With one set of air springs fully inflated, measure
distance from center line of axle to underside of
It will take two to six seconds after adjustment
of nylon block in height control valve before air
starts to flow through valve. This is caused by
the built-in time delay.
Adjust valve by loosening lock nut and carefully
moving nylon block until dimension of 14 inches,
plus or minus one-eighth of an inch, is reached.
Tighten adjustment lock nut.