TM 1-1520-238-T-4
3–32
3–15.
PARKING BRAKE HANDLE – DOES NOT RETRACT
3–15
Tools:
Nomenclature
Part Number
Tool Kit, Aircraft
SC518099CLA01
Mechanic’s
Jack, Hydraulic Axle,
MIL-J-26013
5-Ton (2)
Personnel Required:
67R
Attack Helicopter Repairer
One person to assist
References:
TM 1-1520-238-23
1. Visually inspect parking brake valve.
Is valve lever or spring broken or loose?
YES
Replace spring and/or lever
(TM 1-1520-238-23).
NO
Go to step 2.
2. Check pilot brakes.
Are pilot brakes firm?
YES
Go to step 3.
NO
Go to paragraph 3–10.
3. Check parking brake release pin.
Is parking brake release pin protruding from
locking lever?
YES
Go to step 5.
NO
Go to step 4.
4. Inspect cable assembly for binding or bends.
Is cable assembly binding or bent?
YES
Replace cable assembly
(TM 1-1520-238-23).
NO
Go to step 6.
5. Depress pin and release lever.
Can lever move up and down?
YES
Go to step 7.
NO
Go to step 6.
6. Detach cable assembly at valve lever.
Can cable assembly move in and out freely?
YES
Go to step 7.
NO
Replace cable assembly
(TM 1-1520-238-23).
7. Service and bleed brake system
(TM 1-1520-238-23).
Are pilot brakes firm?
YES
Go to step 8.
NO
Go to paragraph 3–13.
8. Check parking brakes.
Can parking brakes be set?
YES
Go to step 9.
NO
Replace parking brake valve
(TM 1-1520-238-23).
9. Check parking brakes.
Can parking brake be retracted to release
brakes?
YES
Go to paragraph 3–10.
NO
Replace parking brake valve
(TM 1-1520-238-23).
END OF TASK
