March 2021
Service and Repair Manual
Ground Controls
Part No. 1272217GT
GS
™
-30 • 32 • 46 • 47
49
2-7
Manual Platform Lowering Cable
The manual platform lowering cable lowers the
platform in the event of a main power failure. The
manual platform lowering cable is attached to the
barrel end of the lift cylinder and is activated next
to the ground controls.
How to Adjust the Manual
Platform Lowering Cable
1 Raise the platform 7 to 8 feet / 2,1 to 2,4 m.
:
2 Lift the safety arm, move it to the center of the
scissor arm and rotate down to a vertical
position.
3 Lower the platform onto the safety arm.
Crushing hazard. Keep hands
clear of the safety arm when
lowering the platform.
4 Pull the handle of the manual platform
lowering cable out until considerable
resistance is felt. Release the handle.
5 Measure the distance between the base of
the handle and cable mounting nut.
Result: The measurement should be no
greater than 0.125 inch / 3 mm.
Note: Proceed to step 8 if measurement is correct.
Platform manual lowering cable specification
Gap, lowering handle to mounting
nut
0 to 0.125 inch
0 to 3 mm
6 To adjust, loosen the upper lock nut on the
cable mounting bracket at the cylinder. Turn
the lower lock nut clockwise to decrease the
distance or counterclockwise to increase the
distance. Tighten the upper lock nut.
1 manual lowering cable sheath
2 upper lock nut
3 cable mounting bracket
4 lower lock nut
5 cable mounting nut
6 end of lowering cable
7 manual lowering valve (hydraulic
schematic item N)
7 Repeat this procedure beginning with step 4.
8 Raise the platform and rotate the safety arm
to the stowed position.
9 Pull the manual lowering handle at the ground
controls 2 to 3 times to ensure it is functioning
correctly.