Hyster N30-40XMR3 C470, Техника безопасности, техническое обслуживание и ремонт

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4500 SRM 971 Double-Reach Scissor Arms
necessary, use tape to keep the load rollers on the
scissor arms.
4. Use the crane to slowly raise the scissor arm
weldment and the scissor arms to align the load
rollers with the removal notches in the rear
frame. Use the crane to move the scissor arm
assembly so the load rollers move into the chan-
nels.
5. Slowly raise the scissor arm assembly to align
the mounts with the rod ends of the reach cylin-
ders. Install the bushings, pins, and shoulder
bolt to fasten the reach cylinders to the scissor
arm weldment. See Figure 15.
WARNING
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.
CAUTION
DO NOT let the load rollers or shims fall off the
scissor arms.
6. Install the shims and load rollers on the scissor
arm weldment as marked during removal and
disassembly. If necessary, use tape to keep the
load rollers on the scissor arms. Install the hoses
on the hose sheaves, and install the hose sheaves
and snap rings at the mount of the scissor arm
weldment.
Double-Reach Scissor Arms
REMOVE AND DISASSEMBLE
For the following procedures, refer to Figure 11.
NOTE: The reach assembly must be in the fully
extended position.
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 inner frame to make sure that
the load bearings cannot move in the channel.
See Figure 7.
WARNING
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 inner frame and
mast weldments to keep the inner 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 outer frame as described in Reach
Assembly Outer Frame. Remove the snap rings
and hose sheaves at the scissor arm weldments.
Fasten the cable and hoses at the inner frame so
they are not damaged.
2. Use a crane and chains or slings as a support for
the scissor arm weldment A. Make sure to install
the chains or slings so the weldment cannot slip
inside the chains or slings. Do not damage the
hose sheave mount.
3. Remove the two capscrews, lockwasher, end cap,
and two thrust washers (12 through 15, Fig-
ure 11) from the bottom pivot points of scissor
arms 1A and 2A.
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