JLG 4394RT - Platform and Scissor Arm Systems

SECTION 3 - CHASSIS, PLATFORM & SCISSOR ARMS
3-42 – JLG Lift – 3121642
3.7 PLATFORM
NEVER WORK UNDER ELEVATED PLATFORM WITHOUT FIRST PROPERLY SUP-
PORTING THE PLATFORM AND BRACING/BLOCKING SCISSOR ARM ASSEMBLY.
REMOVAL:
1. Disable machine operation.
2. Place lifting straps at each end of the platform (1). Using
an overhead crane lift platform.
NOTE: Use lifting straps and overhead crane capable of lifing at
least 6000 lbs (2722 kg).
3. Disconnect, cap and label hydraulic lines on deck exten-
sion cylinders. Disconnect and label all electrical wires
going to platform.
4. Detach the center attach link from the platform by
removing the bolt (8), locknut (9) pin keeper (10) and pin
(11).
5. With scissor arm assembly (2) braced, remove the slide
block (3) at each corner of the platform by removing the
bolt (4), locknut (5), pin (6) and spacer tube (7).
6. Lift platform away from the machine.
INSTALLATION:
1. Follow Removal Steps in reverse.
NOTE: For machines equipped with Load Sensing System, refer to
JLG Supplement P/N 3124288.
TIGHTEN BOLTS (4) AND LOCKNUTS (5) TO JUST MAKE CONTACT WITH THE
SLIDE BLOCKS (3). DO NOT OVERTIGHTEN.
3
4
7
1
6
5
11
9
2
10
3
3
8
1. Platform
2. Scissor Arms
3. Slide Block
4. Bolt, (metric) 10 x 200
5. Locknut, (metric) M10 x 1.5
6. Pin
7. Spacer Tube
8. Bolt, 3/8"-16NC x 1 3/8"
9. Locknut
10. Pin Keeper
11. Pin
Figure 3-37. Platform Removal