TM 55-1680-320-23 & P
2-54. LIMIT SWITCH DRIVE ASSEMBLY - ADJUST (cont)
2-54
3.
4.
5.
6.
7.
8.
9.
Switch adjusting screws are factory set.
Do not adjust. Adjusting screws will
result in component failure.
Move control pendant CABLE UP/DOWN switch
to DWN. Reel out cable until SW2 DOWN LIMIT
switch (5) stops operation.
Loosen SW2 switch cam (6) by loosening cam
screw (7).
Slowly reel out cable until SW1 DOWN ALL
STOP switch (8) actuates.
Three wraps of cable shall remain on hoist drum.
Reel on or off cable until three wraps are obtained.
Hold drum.
Loosen SW1 switch cam (9) by loosening cam
screw (10). Adjust cam until cam just actuates
switch. Tighten screw.
Reel cable onto drum, then reel off to check ad-
justment of switch SW1 (8). Repeat steps 6 and
7 until adjustment is correct.
Slowly move control pendant switch to UP. Reel
in cable until five wraps are visible on drum. Ensure
cable sets properly into drum grooves
10. Adjust SW2 switch cam (6) until cam just actuates
switch (5). Tighten screw (7).
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