WARNING
There are pinch points on the reach carriage as-
sembly that can cause an injury. Use clamps and
blocks to prevent the scissor arms from moving.
Install the clamps and blocks at the channels of
the rear frame to make sure that the load rollers
cannot move in the channel. See Figure 8.
Be careful when removing or installing snap
rings. These snap rings are large and can come
loose during removal or installation with enough
force to cause an injury. Always use the correct
snap ring pliers, and wear eye and face protection
during removal or installation.
NOTE:
Use safety chains on the rear frame and
mast weldments to keep the rear frame and mast
weldments from moving. Install the safety chains
as described in Safety Procedures When Working
Near Mast in this section.
1.
Remove the front frame. Secure the cable guide
at the rear frame to avoid damage.
2.
Remove the hydraulic components from the
reach carriage assembly as required.
3.
Use a crane to support the inner scissor arm.
Securely attach chains or slings to the arm so
that it cannot slip. Be careful not to damage the
hose mount sheaves.
WARNING
The points between the scissor arms and the rear
frame are pinch points and can cause an injury.
DO NOT put your hands near pinch points when
removing the pivot pins. Use a hammer and brass
drift to remove the pins.
4.
Remove the shoulder bolt and nut from the
reach cylinder pins. Use a drift to drive out the
cylinder rod end pins attaching the reach cylin-
ders to the inner scissor arm. Use wire to hold
each reach cylinder and their hoses in position
when the pins are removed. Remove the bush-
ings from the mounts.
WARNING
The load rollers and scissor arms can move and
cause an injury when the clamps and blocks at
the load rollers are removed. Make sure the crane
is in a position to prevent movement of the scis-
sor arms as the clamps and blocks are removed.
5.
Carefully remove the clamps and blocks at the
load rollers on the channels of the rear frame.
Carefully move the scissor arms to align the
load rollers with the removal notch in the rear
frame. Raise the crane to move the load rollers
out of the rear frame.
WARNING
The scissor arms are heavy and can cause an in-
jury if allowed to fall. Have another person help
you support the scissor arm during removal and
installation.
NOTE:
Install labels identifying scissor arm com-
ponent locations and orientation for correct instal-
lation.
6.
Remove the three capscrews, lockwashers, and
end plate at the center pivot. Hold the outer
scissor arm and carefully slide it and the bear-
ing off the stub shaft. Remove the bearing as-
sembly and spacer. Repeat for the other side.
See Figure 12.
Single-Reach Scissor Arms
4500 SRM 1196
18
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