TM 55-1520-240-23-7
9-146.1
CHECK AND ADJUST POWER STEERING CONTROL BOX ON AIRCRAFT
(AVIM)
(Continued)
9-146.1
SYSTEM OPERATION CHECK AND ADJUSTMENT
15.
Jack aft end of helicopter (Task 1-24).
16.
Connect external hydraulic power supply (Task
1-38).
17.
Check that swivel locks on both aft wheels are
locked (TM 55-1520-240-T).
18.
Set the LOCK-UNLOCK-STEER switch (6) to
UNLOCK.
19.
Check that swivel locks (9) on both aft wheels
are unlocked (TM 55-1520-240-T).
20.
Manually swivel left aft wheel clockwise
approximately 90º (10). Release it.
21.
Set the LOCK-UNLOCK-STEER switch (6) to
LOCK and check that:
a.
Wheel returns to neutral (11).
b.
Swivel lock engages and locks wheel in trail
aft position.
22.
Set the LOCK-UNLOCK-STEER switch (6) to
UNLOCK. Swivel lock shall unlock.
23.
Manually swivel left aft wheel counterclockwise
approximately 90º (12). Release it.
24.
Set the LOCK-UNLOCK-STEER switch (6) to
LOCK and check that:
a.
Wheel returns to neutral (11).
b.
Swivel lock engages and locks wheel in trail
aft position.
9-593
