4000 SRM 482
Mast Adjustments
A.
TWO-STAGE
B.
THREE-STAGE MAIN-LIFT
C.
THREE-STAGE FREE-LIFT
1.
INNER WELDMENT
2.
CHAIN SHEAVE
3.
LIFT CHAIN
4.
COTTER PIN
5.
ANCHOR PIN
6.
CHAIN ANCHOR
7.
LOCK NUT
8.
OUTER WELDMENT
9.
ADJUSTMENT NUT
10. REACH CARRIAGE
11. TYPICAL FIXED ANCHOR
12. INTERMEDIATE WELDMENT
13. FREE-LIFT CYLINDER
Figure 26. Lift Chains Adjustment
ADJUST MAIN-LIFT CHAINS
NOTE:
On three-stage masts, the free-lift chains
must be adjusted before adjusting the main-lift
chains.
NOTE:
The nuts used to adjust the main-lift chains
are on the chain anchors near the top of the outer
weldment. See Figure 26.
Read and follow the instructions in General of this
section.
Masts with free lift cylinder - Adjust chain anchors
at main lift cylinders so top of inner mast weldment
is even with top of outer mast weldment ±1.5 mm
(0.06 in.)
All masts - Adjust chains (inner chains on masts with
free lift cylinder) so bottom of carriage is 82.55 mm
(3.25 in.) above floor. Verify that chains (of each
chain set) are adjusted for equal tension.
Two-Stage
1.
Fully lower the carriage. Measure the distance
from the floor to the bottom of the carriage. The
correct distance is 82.55 mm (3.25 in.).
2.
If the distance is correct, the chains are adjusted
for the correct height. Perform Step 5 next. If the
distance is NOT correct, perform all of the steps.
3.
Remove the mast operator guard. See Figure 8.
Loosen both lock nuts at the chain anchors to
make any adjustments.
4.
Adjust the nuts of the chain anchors equal
amounts for the correct distance (Step 1).
41
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: ......
