4500 SRM 971
Safety Procedures When Working Near Mast
General
This manual has a description and the repair procedures for the single-reach and double-reach carriages on
two-stage or three-stage masts.
Safety Procedures When Working Near Mast
WARNING
All chains, ropes, and lifting equipment MUST
be fully examined by qualified personnel at
least once a year or more at frequent intervals
according to the local conditions of use.
WARNING
Mast parts are heavy and can shift. Distances
between parts are small. Serious injury can re-
sult if part of the body is hit by parts of the mast
or the carriage.
• Never put any part of the body into or under
the mast or carriage unless all parts are com-
pletely lowered or a safety chain is installed.
Also make sure the power is off and the key
is removed. Attach a DO NOT OPERATE tag
to the control handle.
• DO NOT make repairs or adjustments unless
specifically authorized to do so. Repairs and
adjustments must be performed by trained
service technicians.
• DO NOT climb on the mast or lift truck at any
time. Use a ladder or personnel lift to work
on the mast.
• Be careful of the forks.
When the mast is
raised, the forks can be at a height to cause
an injury.
• Move the truck to a safe location with room to
raise the mast if necessary. Block the wheels
of the truck to prevent movement.
The forks may be difficult to see when the mast is
raised. Be careful not to hit your head when working
around raised forks. Also, be careful not to trip over
forks on or near the floor. If possible, remove forks
from carriage before safety chaining mast.
WHEN WORKING NEAR THE MAST, ALWAYS:
• Lower the mast and carriage completely. Make
sure there is no movement in the mast. Make sure
all parts of the mast, that can move, are fully low-
ered.
OR
• If the mast must be in a raised position for re-
pairs, install a safety chain around the top or mid-
dle crossmember of the outer weldment and the
crossmember of the inner weldment to secure the
mast.
WARNING
Perform the following step from the side of the
mast using a ladder. Never stand under the car-
riage until safety chains are installed.
1.
Remove forks from carriage if possible.
2.
Raise mast to align bottom crossmember(s) of
weldment(s) that move within the outer weld-
ment with a crossmember on outer weldment.
On the two-stage mast, the moving part is the
inner weldment. On the three-stage mast, it is
the intermediate weldment.
3.
Wrap a safety chain, 9.5 mm (3/8 in.) minimum
size, around crossmembers of inner and outer
weldment. Secure it in place. See Figure 1.
4.
Lower mast until safety chain stops mast. Make
sure there is no movement of mast.
5.
Turn key switch to OFF, disconnect battery, and
place a DO NOT OPERATE tag on control han-
dle head.
6.
Wrap a second safety chain, 9.5 mm (3/8 in.) min-
imum size, around crossmembers of inner and
outer weldment. Secure it in place as an addi-
tional precaution.
NOTE:
The mast operator guard MUST be removed
to install safety chain. Remove safety chain and in-
stall guard AFTER repairs are complete.
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