4500 SRM 971
Reach Assembly Outer Frame
CAUTION
Do not let the load bearings or shims fall off the
scissor arms.
2.
Make sure the shims and load bearings are
installed in the correct positions on the scissor
arms. If necessary, use tape to keep the load
bearings on the scissor arms. Do not let the load
bearings fall during installation of the outer
frame.
NOTE:
Correct placement of shims is critical for the
operation of the reach mechanism. Unless the shims
are installed correctly, the reach mechanism will not
operate.
WARNING
There are pinch points on the reach car-
riage 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 bearings cannot move in the channel.
See Figure 7.
CAUTION
Do NOT operate any functions if the outer
frame has been removed.
Hydraulic oil can
come out of the hoses.
NOTE:
Another installation method for the outer
frame is to raise the scissor arms and rear frame as a
unit. Operate the lift system of the lift truck to raise
the scissor arms and rear frame above the outer
frame. Use the crane and a bar to align the channels
of the outer frame under the load bearings of the
scissor arms. Tilt the outer frame forward for clear-
ance. Have another person slowly lower the scissor
assembly so the load bearings are in the channels.
Tilt the outer frame to align the scissor arms for
installation of the pins and retaining brackets.
NOTE:
Use safety chains on the rear frame and mast
weldments to keep the rear frame and mast weld-
ments from moving. Install the safety chains as de-
scribed in Safety Procedures When Working Near
Mast in this section.
3.
Use the crane to move the outer frame for align-
ment with the scissor arms. Tip the outer frame
forward and align the channels with the load
bearings of the scissor arms. Slowly lift the outer
frame to install the load bearings in the channels.
NOTE:
Another removal method for the outer frame
is to raise the scissor arms and rear frame as a unit.
All auxiliary hoses must be plugged to do this. Re-
move the safety chains and operate the lift system of
the lift truck to raise the scissor arms and rear frame
off the outer frame.
4.
The load bearings must move in the channels and
have minimum clearance with free movement.
Keep the outer frame in vertical alignment and
move it up and down on the load bearings. If nec-
essary, add or remove shims for free movement
and minimum clearance.
5.
Install new bushings in the top end of each scis-
sor arm. Lubricate the bushings with multipur-
pose grease. Tip the outer frame back and align
the holes for the pivot pins with the bushings in
the top scissor arms.
6.
Keep the pivot pins (8) (Figure 8 and Figure 9) in
alignment to install the retaining brackets and
hardware. Install the pins and brackets.
7.
Install the hoses and wire at the base of the
rear frame as marked during removal. For units
without sideshift, see Figure 8. For units with
sideshift, see Figure 9.
8.
After all hydraulic lines and wire are connected,
operate the functions to check for leaks and cor-
rect operation. Remove the air from the system
as described in Carriage or Reach Assembly Ad-
justments. Install new cable ties at the original
locations for clearance of hoses and electrical ca-
bles during operation.
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