JLG 4394RT Service Manual - Manual (Page 105)

SECTION 3 - CHASSIS, PLATFORM & SCISSOR ARMS
3121249 – JLG Lift – 3-69
Scissor Arms Removal
NEVER WORK UNDER ELEVATED SCISSOR ARMS WITHOUT
FIRST PROPERLY BRACING/BLOCKING SCISSOR ARM ASSEM-
BLY.
NOTE: Scissor arms can be removed individually or as an
entire assembly.
ARM REMOVAL:
1. Remove platform (refer to Figure 3-37.) and lift cylin-
der (refer to Figure 3-41.).
2. Disconnect, cap and label all hydraulic hoses and
wiring attached to scissor arms.
3. Support the scissor arm(s) being removed.
4. Remove the pin (2) from the scissor arm (1) by
removing the two bolts (3), nuts (4) and collar (5).
5. Push pin and bearing (6) out from scissor arms.
6. Repeat at each connecting pin.
INSTALLATION:
1. Follow Removal Steps in reverse.
Scissor Arm Assembly Removal
NEVER WORK UNDER ELEVATED SCISSOR ARMS WITHOUT
FIRST PROPERLY BRACING/BLOCKING SCISSOR ARM ASSEM-
BLY.
REMOVAL:
NOTE: Applies to all four corners.
1. Remove platform (refer to Figure 3-37., Platform
Removal).
2. Disconnect, cap and label all hydraulic hoses and
wiring attached to scissor arms and lift cylinder.
3. Support the scissor arm assembly with appropriate
lifting straps and overhead crane.
4. Disconnect the scissor arm assembly from the four
sliders (2) by removing the bolts (4) and nuts (5)
5. Push pins (3) out.
6. Carefully lift arm assembly up and away from chas-
sis.
INSTALLATION:
1. Follow Removal Steps in reverse.
1. Scissor Arm
2. Pin
3. Bolt, 3/8"-16NC x 3"
4. Nut
5. Collar
6. Bearing
Figure 3-42. Scissor Arms Removal
3
1
6
3
2
5
4
1. Scissor Arm
2. Slider
3. Pin
4. Bolt, 3/8"-16NC x 1 1/4"
5. Nut
Figure 3-43. Scissor Assembly Removal - Chassis
Connection
1
2
3
4 5