TM 55-1520-240-23-7
9-146.1
CHECK AND ADJUST POWER STEERING CONTROL BOX ON AIRCRAFT
(AVIM)
(Continued)
9-146.1
36.
Measure difference between line "N" on swivel
fork (18) and line "N" on housing (11) when
CAUTION PANEL (15) illuminates.
37.
Panel (15) shall illuminate when line (18) is within
3-3/16 to 3-13/16 inches from line (11).
38.
Set BRK STEER switch (7) to ON and set
LOCK-UNLOCK-STEER switch (6) to LOCK.
a.
Check that wheel returns to within 1/4 inch
of lock position.
b.
Check that swivel lock (9) extends to lock
position.
39.
Set LOCK-UNLOCK-STEER switch (7) to
UNLOCK.
40.
Check that swivel lock (9) is unlocked.
41.
Set LOCK-UNLOCK-STEER switch (7) to
STEER.
42.
Loosen fasteners (19). Remove power steering
box (20) from console (21).
43.
Check right aft wheel for drifting clockwise or
counterclockwise from neutral position.
44.
Turn adjust-screw (22) in half turn increments in
the required direction to bring upper and lower
line "N" (11) together.
45.
Maintain hand pressure on wheel to simulate
ground friction and prevent overtravel while
performing step 46.
46.
Monitor right aft wheel and rotate steering control
knob (23) clockwise 90º and hold.
a.
Check that wheel rotates counterclockwise
and line "N" on fork (24) stops within 2-11/16
to 3-1/8 inches of line "N" on housing (11).
b.
Check that rotation is smooth and does not
exceed 7 seconds.
9-595
