TM 1-1520-238-T-4
3–35
3–18.
TAIL WHEEL LOCK ACTUATOR LOCKING PIN – DOES NOT ENGAGE LOCKING
3–18
PLATE OR DOES NOT DISENGAGE FROM LOCKING PLATE
Tools:
Nomenclature
Part Number
Tool Kit, Aircraft
SC518099CLA01
Mechanic’s
Jack, Hydraulic Axle,
MIL-J-26013
5-Ton
Personnel Required:
67R
Attack Helicopter Repairer
One person to assist
References:
TM 1-1520-238-23
TM 1-1520-238-T-5
1. Visually inspect tail wheel lock actuator.
Is lock actuator locking pin visible?
YES
Go to step 2.
NO
Go to step 3.
2. Engage lock actuator locking pin.
Using handle, does lock actuator pin engage
locking plate hole when tail wheel is
centered?
YES
Go to step 4.
NO
Go to step 5.
3. Move actuator handle up and center tail wheel.
Is lock actuator locking pin visible?
YES
Go to paragraph 3–11.
NO
Replace tail wheel lock actuator
locking pin TM 55-1520-238-23.
4. Start APU TM 55-1520-238-23). On pilot TAIL
WHEEL panel, set UNLOCK/LOCK switch to
UNLOCK.
Does lock actuator locking pin disengage
when using hydraulic power?
YES
Go to step 6
NO
Refer to TM 1-1520-238-T-5 to
troubleshoot utility hydraulic
system.
5. Set UNLOCK/LOCK switch to LOCK.
Does lock actuator locking pin engage when
using hydraulic power?
YES
Go to paragraph 3–11.
NO
Replace tail wheel lock actuator
TM 55-1520-238-23).
6. Visually inspect tail wheel lock actuator locking
pin.
Is lock actuator locking pin sheared or bent?
YES
Replace tail wheel lock actuator
locking pin
TM 55-1520-238-23).
NO
Go to step 7.
7. Check stop adjustment of tail wheel lock release
handle TM 55-1520-238-23).
Is handle stop adjusted properly?
YES
Remove tail wheel lock actuator
and inspect. Repair as
necessary TM 55-1520-238-23).
NO
Go to step 8.
8. Adjust stop TM 55-1520-238-23).
Does lock actuator locking pin completely
disengage?
YES
Go to step 9.
NO
Remove and repair tail wheel
lock actuator
TM 55-1520-238-23).
