TM 9-4940-568-10
2-171
2-42. FORWARD REPAIR SYSTEM (FRS) EMERGENCY PROCEDURES.
a.
Crane Emergency Procedures.
6
7
5
2
1
2
3
4
3
4
(1)
Crane emergency operation with electrical failure:
Do not try to operate any electrical equipment on crane if electrical failure has
occurred. Damage to equipment could result.
NOTE
This procedure will provide emergency hydraulic power to lower crane and load when
electrical power has failed.
Failure of hydraulic system will stop operation of any crane, winch or hydraulic motor.
All cranes and winches are equipped with automatic locking mechanisms to hold cranes
and winches in position they were in before hydraulics failed.
(a)
Cut and remove safety lock seal (1).
(b)
Remove two screws (2), lockwashers (3), washers (4) and manual override guard (5) from crane
(6).
(c)
Press in, twist counterclockwise and pull out MHC MANUAL OVERRIDE valve (7).
(d)
Stow crane (6) in accordance with crane stowage (Para 2-29), using manual controls only.
(e)
Press in, twist clockwise and release MHC MANUAL OVERRIDE valve (7).
(f)
Notify Unit Maintenance.
