4000 SRM 482
Two-Stage Mast Assembly
TWO-STAGE MAST ASSEMBLY, INSTALL
Read and follow all WARNINGS and CAUTIONS. If
the carriage is installed on the mast, it must have a
safety chain installed as described in Safety Proce-
dures When Working Near Mast.
WARNING
Do not install the two-stage mast assembly un-
less it is completely assembled. Mast parts can
move and cause an injury if not fastened to-
gether during assembly.
NOTE:
The inner mast assembly must be in a posi-
tion to allow access to the mount capscrews at the
bottom of the outer weldment. Use safety chains to
fasten the mast weldments together so they cannot
move.
1.
Use the crane or lifting device to lift the mast
assembly and move it close enough to the truck
to make the necessary connections. Make sure
the truck and mast assembly cannot move.
2.
Install and tighten the mast and carriage hoses
on their correct bulkhead fittings according to the
labels installed during removal.
3.
Move the mast assembly into position. Lower
the mast assembly so that the outer weldment is
aligned with the trunnion blocks on the lift truck
frame.
NOTE:
Make sure all hoses and the electrical cable
are not between a mast crossmember and the truck.
4.
Align the trunnion caps according to the marks
made during removal. Install the capscrews but
leave them loose.
5.
Connect all the wires of the electrical cable ac-
cording to the labels made during removal.
CAUTION
Install tape on all electrical wires for the reach
carriage if the wires are not connected to the
carriage. If the wires are not connected, they
can make a short circuit and cause damage.
6.
Operate the LIFT/LOWER control to raise the
inner weldment for access to the bottom of the
outer weldment.
7.
Install safety chains between the outer and in-
ner weldments to keep the inner weldment from
moving.
8.
Use a pry bar to align and install the four mount
capscrews and the nutplates that fasten the bot-
tom of the mast to the truck frame. See Fig-
ure 10. Move the bottom of the weldment in or
out and add shims until the mast is adjusted be-
tween vertical to 1/2-degree back tilt.
9.
Tighten the four mount capscrews to 203 N•m
(150 lbf ft).
10. Install the hose clamps and hose bracket. Op-
erate the LIFT/LOWER control to raise the in-
ner weldment high enough to remove the safety
chains carefully. Remove the safety chains.
11. Tighten the four trunnion cap capscrews to
203 N•m (150 lbf ft). Use the crane to lower the
inner weldment until the chain and crane are no
longer the support. Remove the chain and crane.
12. Install the mast operator guard and capscrews
that fasten the rear legs to the overhead guard.
13. Make all adjustments and test the operation of
the mast assembly before returning the truck to
service. See Mast Operation Check.
21
Содержание MAST N30XMH
Страница 14: ...Two Stage Mast Assembly 4000 SRM 482 Figure 10 Two Stage Mast Assembly Dual Lift Cylinders 10 ...
Страница 16: ...Two Stage Mast Assembly 4000 SRM 482 Figure 11 Two Stage Mast Assembly Single Lift Cylinder 12 ...
Страница 21: ...4000 SRM 482 Two Stage Mast Assembly Figure 15 Hose and Cable Assemblies Two Stage Mast Dual Lift Cylinders 17 ...
Страница 27: ...4000 SRM 482 Three Stage Mast Assembly Figure 18 Three Stage Mast Assembly 23 ...
Страница 34: ...Three Stage Mast Assembly 4000 SRM 482 Figure 21 Hose and Cable Assemblies Outer Weldment 30 ...
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Страница 52: ...TECHNICAL PUBLICATIONS 4000 SRM 482 4 08 11 06 5 04 4 03 5 02 5 98 12 95 4 92 2 92 Printed in U S A ...