JLG 1200SJP Service Maintenance Manual page 303

11. Repeat the following boom movement steps three
times. This is to ensure that the wire rope tension has
equalized on both sides of the sheaves and the ropes are
seated properly in the sheave grooves.
a. Fully retract the boom.
b. Extend the boom such that the platform moves 5 to
6 feet (1.5-1.8 m) from fully retracted position.
12. Verify the Fly Boom and Outer Mid Boom Retract wire
rope torques.
a. If the torque values are not correct, repeat the Wire
Rope Tensioning procedure.
b. If the torque values are correct, proceed to the next
step.
13. Retract the boom 2-3 feet (0.5-1 m). Do not fully retract
or bottom out the boom.
14. Verify the Fly Boom and Outer Mid Boom Extend wire
rope torques.
a. If the torque values are not correct, repeat the Wire
Rope Tensioning procedure.
b. If the torque values are correct, proceed to the next
step.
15. Check for proper function of the boom assembly. When
properly torqued and positioned, all three moving
boom sections will move simultaneously.
16. Install new nylon collar locknuts to the Fly Boom Extend
wire rope fittings. Do not re-use the old nylon collar lock
nuts. Torque the locknuts to 10 ft-lb (13.5 Nm)
17. Reinstall the lock plates to the remaining adjuster nuts.
3121142
18. Install all covers.
– JLG Lift –
SECTION 4 - BOOM & PLATFORM
4-69