Two-Stage Mast Assembly
4000 SRM 482
HOSE AND CABLE SHEAVES, REPLACE
Read and follow the Safety Procedures When Work-
ing Near Mast, as well as all WARNINGS and CAU-
TIONS. See Figure 15.
NOTE:
The following procedure describes how to re-
place the hose and cable sheaves without removing
the carriage or mast assembly from the lift truck. If
the mast assembly has been removed, carefully move
the carriage or inner weldments using a pry bar.
WARNING
The mast weldments can move and cause an
injury even if the mast assembly has been re-
moved from the lift truck. Make sure the mast
assembly is level to prevent the components
from moving without being moved. Use safety
chains to prevent movement after components
are in the correct position.
1.
To replace any hydraulic hoses, fully lower the
carriage. Make sure the system does not have hy-
draulic pressure. Hold the control (for each func-
tion) in the forward position for approximately 5
seconds to release the pressure. Make sure the
hydraulic pump does not operate. Move the key
to the OFF position. Disconnect the battery and
put a tag or lock on the battery connector.
2.
Fasten the hoses to the top of the inner mast at
the sheaves. Disconnect or remove the hoses at
the carriage. Install hose caps to prevent dirt
from entering the hydraulic system.
3.
Disconnect the spring of the tension device for
the electrical cable. Fasten the cable to the top
of the inner mast at the sheave. Install tags on
the wires of the electrical cable at the reach car-
riage for correct connection later. Disconnect the
electrical cable.
4.
Remove the capscrew, washers, and cotter pin in
the shaft at the sheave assembly. Use a drift to
remove the shaft at the sheaves carefully. Do not
let the sheaves or shims fall.
5.
Follow the reverse procedure to install the hose
and cable sheaves. Make sure to operate the car-
riage hydraulic function(s) and check for leaks af-
ter the hoses are connected.
TWO-STAGE LIFT CHAINS
Read and follow the Safety Procedures When Work-
ing Near Mast, as well as all WARNINGS and CAU-
TIONS. See Figure 16 and Figure 23.
NOTE:
REACH CARRIAGE SHOWN. CHAIN AN-
CHOR ON STANDARD CARRIAGE SIMILAR.
1.
INNER WELDMENT
2.
CHAIN SHEAVE
3.
BEARING
4.
SNAP RING
5.
LIFT CHAIN
6.
COTTER PIN
7.
PIN
8.
CHAIN ANCHOR
9.
ADJUSTMENT NUTS
10. OUTER WELDMENT
Figure 16. Removing Chain Sheave
18
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: ......
