Hyster A254, Руководство по обслуживанию, Страница: 23 / 27

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 solvents, always
follow the recommendations of the manufacturer.
CAUTION
DO NOT use steam to clean the lift chains, lift
chain sheaves, or cable pulleys. The lift chain
sheaves and cable pulleys are sealed and perma-
nently 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 sol-
vent.
WARNING
Some parts may be damaged by welding. To pre-
vent an injury, always get authorization from your
dealer for Hyster aerial work platforms before
welding on the mast or mast components.
2.
Inspect the sliding and rolling surfaces of the
channels for damage (dents) and wear
(grooves). Inspect all welds for cracks.
3.
If lift chains need to be cleaned, see procedures
in the Periodic Maintenance manual listed
in the General section of this manual.
4.
Inspect all chain anchors, chain anchor pins,
cotter pins, and cable pulleys to ensure they are
not worn or damaged. See the Parts Manual
to replace any parts that are damaged or worn.
ASSEMBLE
NOTE:
Install self-tapping screws with hand tools
and not power tools. The use of power tools can
strip the self-tapping screws and damage them.
1.
If lift cylinder was removed, see the Lift Cylin-
der Repair manual listed in the General sec-
tion of this manual for procedures to install lift
cylinder to mast.
NOTE:
Do not adjust setscrews at this moment.
Start the thread and do not apply pressure to mast
slider block.
NOTE:
Apply Loctite® Blue 242 Threadlocker to
setscrew threads prior to installation.
NOTE:
Tighten self-tapping screws slowly to re-
quired torque. If slider block threads are stripped,
replace with new slider block. See Parts Manual
for replacement parts.
2.
Install mast slider blocks on top and bottom
outside of first intermediate mast weldment us-
ing self-tapping screws and setscrews. See Fig-
ure 6. Tighten self-tapping screws to
2.1 N•m (18.6 lbf in).
NOTE:
See Figure 1 for aerial work platform orien-
tation.
3.
Install one washer on left stubshaft and three
washers on right stubshaft at the bottom of
first intermediate mast weldment. See Fig-
ure 11.
4.
Install phasing cable pulley on left stubshaft
and round belt pulley on right stubshaft. See
Figure 12.
5.
Install washer on outside of cable pulley only.
6.
Install snap rings to secure pulleys on stub-
shafts.
1. CHAIN SHEAVE
2. ROUND BELT PULLEY
3. PHASING CABLE PULLEY
Figure 12. Chain Sheave and Pulley Types
4000 SRM 1916 Mast Repair
15