TM 55-1520-240-T
14-1.4 CARGO/RESCUE WINCH SYSTEM OPERATIONAL CHECK
(Continued)
TASK
RESULT
27.
28.
29.
3.0
31.
32.
33.
34.
35.
Do not allow cable end to reel in
and jam in a pulley. Damage to
winch, pulley, or airframe can oc-
cur.
On winch control grip (14), press and hold
WINCH ARMING TRIGGER switch (17)
and set WINCH CABLE control (18) to
IN.
Connect multimeter, set to measure 28
vdc between pin A (+) of CABLE CUT-
TER receptacle (21) and ground.
Lift switch guard (22) and set and hold
CABLE CUTTER switch (23) to ON.
Release CABLE CUTTER switch (23) and
close swltchguard (22).
On winch control grip (14), lift switch guard
(24) and press and hold CABLE CUTTER
switch (25).
Release CABLE CUTTER switch (25) and
close swltchguard (24).
Repeat steps 31 and 32 with winch con-
trol (14) connected to auxiliary panel
(15) with cable (16). Then disconnect mul-
tlmeter and proceed to step 34.
Set HOIST MASTER switch (6) to OFF.
Check that index on control valve knob
(10) aligns with stripe on valve body.
Lockwire knob to structure, Use Iockwire
(E228).
Winch (4) shall reel in cable (12) and stop when
12 to 20 inches of cable remain out. If winch does
not operate, locate open in wire W508-4-20,
W673-23-20, or W639-402-20 between recep-
tacle 132J11 and TB17. Repair or replace wire as
required.
If more or less than 12 to 20 inches of cable IS out
when winch stops, adjust cargo in-llmlt switch, If
switch is adjusted, repeat steps 18 thru 27. If
more or less than 12 to 20 inches of cable IS out,
replace winch.
Multlmeter shall indicate 28vdc. If it does not , go
to task 14-1.13.
Multlmeter shall indicate 28vdc. If it does not, go
to task 14-1.14.
Align stripe if required
14-1.4
FOLLOW-ON MAINTENANCE:
T M 5 5 - 1 5 2 0 - 2 4 0 - 23
Battery disconnected
Hydraulic power off
Electrical power off
Disconnect and stow winch control grip
Disconnect and stow cable cutter.
Install heater compartment acoustic
blanket
Install center cargo hook.
END OF TASK
14-11
