JLG 1850SJ Service Manual - Manual (Page 149)

SECTION 4 - BOOM & PLATFORM
3121619 – JLG Lift – 4-63
ing between the two ropes until both maintain the
required torque.
6. Using tool, JLG p/n 1001162217, torque Section #4
Retract Adjustment Nuts to 38 ft-lb (51.5 Newton
meters), alternating between the two ropes until both
maintain the required torque.
7. Using tool, JLG p/n 1001162217, torque Section #5
Retract Adjustment Nuts to 38 ft-lb (51.5 Newton
meters), alternating between the two ropes until both
maintain the required torque.
8. Retract the boom 2-3 feet (.6m – 1.0m) Do NOT fully
retract the boom or bottom out any section.
9. Using tool, JLG p/n 1001162218, torque Section #3
Extend Adjustment Nuts to 17 ft-lb (23 Newton meters),
alternating between the two ropes until both maintain
the required torque.
10. Using tool, JLG p/n 1001162216, torque Section #4
Extend Adjustment Nuts to 17 ft-lb (23 Newton meters),
alternating between the two ropes until both maintain
the required torque.
11. Using tool, JLG p/n 1001162216, torque Section #5
Extend Adjustment Nuts to 17 ft-lb (23 Newton meters),
alternating between the two ropes until both maintain
the required torque.
12. Equalize the rope tension across the sheaves by exercis-
ing the boom telescope position:
a. Fully retract the boom
b. Extend the boom 4 to 5 feet (1.2m-1.5m) from the
fully retracted position or to the stroke limit identi-
fied in 6.4.
c. Repeat 12a and 12b for a minimum of three cycles,
stopping with the boom extended 4 to 5 feet (1.2m-
1.5m) from the fully retracted position or to the
stroke limit identified in Step 4.
13. Verify wire rope torque values for retract ropes.