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 ma
king any repairs, use blocks and
chains on
the mast weldments and operator
platform
so they cannot move. Make sure the
moving pa
rts are attached to a nonmoving
part.
Lift chai
ns and cables can roll over the sheaves
to fall a
nd possibly cause an injury if the ends
are not f
astened. Keep control of the ends of
the lift
chains and cables as they are discon-
nected.
4. Use bloc
ks and chains to prevent movement of
the mas
t or operator platform. Use the battery
discon
nect lever to disconnect the battery. Re-
move th
e battery as described in the Operating
Manual
or the section Periodic Maintenance
8000 SR
M924orPeriodic Maintenance 8000
SRM 147
2.
5. Remove
the pin(s) in the chain anchor of the oper-
ator p
latform to disconnect the lift chain(s). Re-
movin
g the pin(s) will disconnect the lift chain(s)
witho
ut changing the chain adjustment. Care-
fully
move the lift chain(s) through the sheave(s)
and la
y 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 operato
r platform assembly is heavy and
can cause a
n injury if it tips or falls. Make
sure the op
erator platform assembly has stabil-
ity during
and after removal.
8. Fasten the
operator platform so it cannot fall.
Use chain
s or slings to fasten a crane to the in-
ner mast w
eldment. On two-stage masts, remove
the snap r
ing 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 cr
anetoraisetheinnermastweldment
slowly s
o the carriage rollers come out from the
bottom o
f the channels. Make sure the chains
or sling
s do not damage the sheaves or other
mast par
ts. Make sure there is clearance for
the cha
insorslingsastheinnermastweldment
moves.
Carefully move the carriage away from
the lif
t truck. Carefully lower the inner mast
weldme
nt.
10. On thre
e-stage masts, open the Manual Lower-
ing val
ve. Pull on the rope to retract the free-lift
cylind
er rod.
11. If any o
f the operator platform load rollers must
be rep
laced, make a note of the shim arrange-
ment.
When the new load rollers are installed,
the sh
im arrangement normally will be similar.
3
To Next Page
Loading...
