JLG 1850SJ Service Manual - Manual (Page 150)

SECTION 4 - BOOM & PLATFORM
4-64 – JLG Lift – 3121619
14. Retract the boom 2-3 feet (.6m – 1.0m) Do NOT fully
retract the boom or bottom out any section.
15. Verify wire rope torque values for extend ropes.
16. If the torque values are NOT correct, repeat the Wire
Rope Tensioning Procedure.
17. If the torque values are correct, proceed to Confirm
Proper Boom Deployment Function.
Confirm Proper Boom Deployment Function
Exercise the boom telescope function. When wire ropes are
properly torqued, all traveling sections will move simultane-
ously when extending and retracting.
Re-Assembly
1. Install nylon collar locknuts on Section #4 extend wire
rope fittings.
a. Do not re-use the nylon collar lock nuts. Replace
with new nylon collar lock nuts.
b. Torque locknuts to 10 ft-lb (13.5 Nm).
2. Reinstall lock plates to remaining adjuster nuts.
3. Install all covers.
Boom Calibration
Any adjustment of wire rope tension should be immediately
followed by Boom Calibration.
Figure 4-38. Boom Wire Rope Torques