JLG 600A_AJ Service Manual - Manual (Page 209)

SECTION 4 - BOOM & PLATFORM
3121201 – JLG Lift – 4-33
4.10 FOOT SWITCH ADJUSTMENT
Adjust so that functions will operate when pedal is at cen-
ter of travel. If switch operates within last 1/4 in. (6.35 mm)
of travel, top or bottom, it should be adjusted.
4.11 BOOM SYNCHRONIZING PROCEDURE
NOTE: If the Lower Boom assembly does not fully lower:
1. Remove all personnel from the platform.
2. Pull the red knob located under the manual descent
control valve.
3. From Ground Control, activate the lift control switch,
raise Lower Boom 6 feet (1.83m).
4. After raising Lower Boom, release the red knob.
5. Activate Lower Boom Down, fully lower boom.
6. Repeat step 1 thru 5 if necessary.
A,B,D
C,D
E
A
B
C
D
E Torque to 50 ft.lbs. (68 Nm)
Loctite #242
Torque to 480 ft. lbs. (650 Nm)
Check torque every 150 hours of operation
Torque to 85 ft. lbs. (115 Nm)
Figure 4-23. Platform Support Torque Values
NOTE: If any rotator bolts are replaced, all bolts
on the rotator should be retorqued.