TM 55-1520-240-23-7
9-99.6
TEST HOIST/CARGO HOOK PANEL (AVIM)
9-99.6
INITIAL SETUP
Applicable Configurations:
All
Tools:
Power Supply, 28 VDC
Multimeter
Materials:
None
Personnel Required:
Aircraft Electrician
Inspector
Equipment Condition:
Off Helicopter Task
1.
Without 17 apply 28 vdc to pin E and ground
to pin G of receptacle J2. Five panel lights (1)
shall come on.
1.1.
With 17
apply 115 vac to pin V(+) and S.
Lightplate (11.1) shall illuminate.
2.
Apply 28 vdc to pin C and around to pins F and
L of receptacle J2. HOOK LOADED lights (2)
shall come on.
3.
Remove ground from pins F and L and apply
ground to pin G. Press both HOOK LOADED
lights (2). Lights shall come on. Remove power.
4.
Test switches as listed below. Use multimeter.
Switch
Position
Receptacle
Pins
Meter Reading
(ohms)
CABLE CUTTER (3)
OFF
J1
A and H
No Continuity
ON
J1
A and H
Continuity
EMERG Release (4)
Norm
J1
D and M
No Continuity
Norm
J1
J and M
No Continuity
REL ALL
J1
D and M
Continuity
REL ALL
J1
D and J
Continuity
REL ALL
J1
J and M
Continuity
HOIST MASTER (5)
PILOT
HOIST Control (6)
OFF
J1
B and C
No Continuity
HOIST MASTER (5)
OFF
HOIST Control (6)
Rotate Both Ways
J1
B and C
No Continuity
HOIST MASTER (5)
PILOT
HOIST Control (6)
Rotate Both Ways
J1
B and C
Continuity
Cargo Hook MASTER (7)
ARM
J2
C and K
Continuity
OFF
J2
C and K
Continuity
RESET
J2
C and K
No Continuity
HOIST MASTER (5)
OFF
J1
E and G
No Continuity
PILOT
J1
E and G
Continuity
REMOTE
J1
E and G
Continuity
REMOTE
J1
F and T
341 ± 15
HOIST MASTER (5)
PILOT
HOIST Control (6)
Rotate from OUT
J1
T and B
341 ± 15 at OUT
almost to OFF
841 ± 65 short of OFF
HOIST MASTER (5)
PILOT
HOIST Control (6)
Rotate from IN
J1
T and B
341 ± 15 at IN
almost to OFF
841 ± 65 short of OFF
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