4000 SRM 764
Operator Platform
Operator Platform
REMOVE
1.
Remove the forks as described in the section
Forks, Replace in this manual.
2.
If the hydraulic system cannot be used, perform
Step 3 instead of this step. Tie a rope to the
free-lift crosshead (three-stage only). Use the hy-
draulic system to raise the operator platform for
access to the chain anchors above the top of the
main lift truck frame.
3.
When the hydraulic system cannot be used, con-
nect a crane to the top of the operator platform.
Make sure that the chains or slings do not dam-
age the parts of the operator platform.
Tie a
rope to the free-lift crosshead (three-stage only).
Carefully lift the operator platform for access to
the chain anchor(s) above the top of the main lift
truck frame. Make sure the lift chain(s) passes
over the sheave(s) correctly.
WARNING
Before making any repairs, use blocks and
chains on the mast weldments and operator
platform so they cannot move. Make sure the
moving parts are attached to a nonmoving
part.
Lift chains and cables can roll over the sheaves
to fall and possibly cause an injury if the ends
are not fastened. Keep control of the ends of
the lift chains and cables as they are discon-
nected.
4.
Use blocks and chains to prevent movement of
the mast or operator platform. Use the battery
disconnect lever to disconnect the battery. Re-
move the battery as described in the Operating
Manual or the section Periodic Maintenance
8000 SRM 924 or Periodic Maintenance 8000
SRM 1472.
5.
Remove the pin(s) in the chain anchor of the oper-
ator platform to disconnect the lift chain(s). Re-
moving the pin(s) will disconnect the lift chain(s)
without changing the chain adjustment. Care-
fully move the lift chain(s) through the sheave(s)
and lay the chain(s) over the top of the lift truck.
6.
Use a ladder for access to the operator platform.
Make a note of all the connections and disconnect
the electrical cables. Carefully move each cable
through the sheave and lay it over the top of the
lift truck.
7.
Use a crane and chains or slings to support
the operator platform. Remove the blocks and
chains. Use the crane to slowly lower the opera-
tor platform to the floor. Make sure the operator
platform is resting on the floor and not on chains
or slings.
WARNING
The operator platform assembly is heavy and
can cause an injury if it tips or falls.
Make
sure the operator platform assembly has stabil-
ity during and after removal.
8.
Fasten the operator platform so it cannot fall.
Use chains or slings to fasten a crane to the in-
ner mast weldment. On two-stage masts, remove
the snap ring and washer at the rod of each lift
cylinder. See Figure 3. The inner mast weld-
ment must be able to move without extending the
cylinder rods.
9.
Use the crane to raise the inner mast weldment
slowly so the carriage rollers come out from the
bottom of the channels. Make sure the chains
or slings do not damage the sheaves or other
mast parts.
Make sure there is clearance for
the chains or slings as the inner mast weldment
moves. Carefully move the carriage away from
the lift truck. Carefully lower the inner mast
weldment.
10. On three-stage masts, open the Manual Lower-
ing valve. Pull on the rope to retract the free-lift
cylinder rod.
11. If any of the operator platform load rollers must
be replaced, make a note of the shim arrange-
ment. When the new load rollers are installed,
the shim arrangement normally will be similar.
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