Mast Repairs (S/N A513, A514, A613, A614,
A702, A703, A704, A705, A706, A707, A751,
A752, B513, B514, B586, B587, B588, B589,
B590, B591, B749, B750, B751, B752, B753,
B754) 4000SRM1250 for lift truck models shown
below:
• H4.0FT5/FT6;
H4.5FTS5,
H4.5FT6;
H5.0-5.5FT, (H80-120FT) (N005, P005,
R005, S005)
• S4.0-5.5FT,
S5.5FTS,
(S80-120FT;
S80-100FTBCS; S120FTS; S120FTPRS)
(G004, H004)
• E3.50-5.50XL,
E4.50XLS
(E70-120Z,
E100ZS) (E098)
Mast Repair (S/N A698, A699, B551)
4000SRM1431 for lift truck models shown below:
• S50CT (A267)
• H2.0-2.5CT (H50CT) (A274)
NOTE:
Perform Step 2 only if working on a lift
truck equipped with a two- or three-stage mast.
Perform Step 3 if working on a lift truck equipped
with a four-stage mast.
2.
Raise the mast until it is almost fully extended.
• On the two-stage mast, use safety chains
to connect the bottom crossmember of
the inner mast section to the top cross-
member of the outer mast section.
• On the three-stage mast, use safety
chain to connect the bottom crossmember
of the intermediate mast section to the
top crossmember of the outer mast sec-
tion. Use another safety chain to connect
the bottom crossmember to a crossmem-
ber on the intermediate or outer mast
section.
Lower the mast so the safety chains hold the
weight of the mast sections.
3.
Raise the mast until it is almost fully extended.
Use a safety chain to connect middle crossmem-
ber of first intermediate mast section to top
crossmember on outer mast section. Lower
mast so safety chain holds weight of the mast
sections.
WARNING
Be careful when removing or install snap rings.
These snap rings can come loose during removal
or installation with enough force to cause an in-
jury. Always use the correct snap ring pliers and
wear eye and face protection during removal or
installation.
4.
If working on a two or three-stage mast, the
snap ring and shims (washers) at the top of the
cylinder are to be reomved.
5.
If working on a four-stage mast, on the left lift
cylinder, remove the snap ring from top of the
cylinder rod. On right lift cylinder, remove
spacer and retainer from cylinder rod.
WARNING
Hydraulic oil is hot after system operation and
can cause burns. DO NOT disconnect any hy-
draulic hoses until the oil in the hydraulic system
is cool.
6.
Put a drain pan under the area of the hydraulic
fittings. Disconnect and cap the hydraulic lines
at the cylinder. Retract the rod into the lift cyl-
inder.
7.
Remove the nut, washer, spacer, and capscrew
at the mounting plate. On two or three-stage
mast, disconnect the main lift chain at the
mount. See Figure 8.
8.
Use a lifting device, as necessary, to remove lift
cylinder from mast. Remove the lift cylinder
from the front of the mast. On a lift cylinder be-
ing removed from a four-stage mast, keep
shims from top of left cylinder with cylinder.
Lift Cylinder Repair
2100 SRM 1139
16
