4000 SRM 482
Two-Stage Mast Assembly
Legend for Figure 10
A.
BACK VIEW
1.
INNER WELDMENT
2.
CHAIN SHEAVE
3.
RETAINER
4.
LOAD ROLLER
5.
LIFT CYLINDER
6.
OUTER WELDMENT
7.
LIFT TRUCK FRAME
8.
HYDRAULIC HOSE (LIFT)
9.
FLOW REGULATOR HOUSING
10. HYDRAULIC TUBE (LIFT)
11. LOCK PLATE
12. NUTPLATE
13. SHIM
14. MOUNT CAPSCREWS FOR MAST ASSEMBLY
15. REGULATOR MOUNT PLATE
16. LOCATING DOWEL PIN
17. TRUNNION STUB SHAFT
18. ELECTRIC CABLE FOR REACH CARRIAGE
19. HOSES FOR REACH OR SIDESHIFT CARRIAGE
20. WEAR STRIP
21. HYDRAULIC HOSE TO TRUCK
NOTE:
On models with trunnion caps, mark the trun-
nion caps so they can be reassembled in the same po-
sition and on the same trunnion from which they are
removed.
6.
Use chains to connect a crane or other lifting de-
vice to the top of the mast assembly. Make sure
the chains will not damage the sheaves or other
parts of the mast assembly. Make sure the chains
and crane have the capacity to lift approximately
2000 kg (4409 lb). Use safety chains to fasten
all the mast weldments together so they cannot
move. If the reach carriage is installed, install
a chain or sling to the reach carriage to keep
the mast assembly from tipping during removal.
Remove the hardware securing the mast to the
frame.
7.
Operate the crane until it gives support to the
weight of the mast assembly. Move the crane to
a position so that the mast assembly will be lifted
vertically. Raise the mast assembly high enough
to clear the trunnions. Move the mast assembly
approximately 30 cm (1 ft) away from the truck
for access to the hoses.
8.
Install labels on all plugs and wires for the elec-
trical cable for correct connection during installa-
tion. Disconnect the plugs and wires so that the
cable is completely disconnected from the truck.
The plugs are near the cable tension device inside
the electrical compartment above the battery.
9.
Move the mast assembly away from the truck.
NOTE:
To disassemble models with an overhead
guard, position the mast with the overhead guard
on the bottom as a support. Install a secure support
under the other end. Make sure the mast is level.
Keep the safety chains installed.
10. If the mast will be disassembled, position the
mast with the carriage up across wooden beams
on a level floor Make sure the mast is level. Keep
the safety chains that were installed in Step 6 on
the mast assembly.
11. If the mast will NOT be disassembled, position
the mast across beams on a level floor with the
overhead guard on top.
CLEAN AND INSPECT
WARNING
Cleaning solvents can be flammable and toxic
and can cause skin irritation. Wear protection
for eyes and skin.
When using cleaning sol-
vents, always follow the recommendations of
the manufacturer.
CAUTION
DO NOT use steam to clean the lift chains,
sheaves, or load rollers.
The sheaves and
roller bearings are sealed and permanently
lubricated. Do not use compressed air on the
bearings. The air can force the lubricant out
of the bearings.
1.
Clean the mast weldments with steam or solvent.
WARNING
Some parts may be damaged by welding. To
prevent an injury, always get authorization
from your dealer for Hyster lift trucks before
welding on the mast, forks, or carriage.
2.
Inspect the sliding and rolling surfaces of the
channels for damage (dents) and wear (grooves).
Inspect all welds for cracks.
11
Summary of Contents for MAST N30XMH
Page 14: ...Two Stage Mast Assembly 4000 SRM 482 Figure 10 Two Stage Mast Assembly Dual Lift Cylinders 10 ...
Page 27: ...4000 SRM 482 Three Stage Mast Assembly Figure 18 Three Stage Mast Assembly 23 ...
Page 34: ...Three Stage Mast Assembly 4000 SRM 482 Figure 21 Hose and Cable Assemblies Outer Weldment 30 ...
Page 51: ......
