JET Tools JLP-150A-20SH User Manual - Page 9

Inspecting Hooks, Other Inspections, and/or damage to the lever hoist.

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The load chain supplied with your JET lever hoist is designed, manufactured, and tested for proper fit and durability. If chain should ever need replacing, for your own safety use factory replacement chain only. Use of other than factory replacement chain may cause serious injury and/or damage to the lever hoist. Inspecting Hooks It is important to check top and bottom hooks for proper opening and other signs of deformation or damage. Replace a hook immediately if any of the following problems are identified: • The safety latch no longer contacts the hook opening. • The vertical angle at the neck of the hook reaches 10° (see Figure 3). • Chemical corrosion or cracks on the hook. • Excessive wear on the inside surface. • The throat opening has enlarged. (See page 11 for the maximum allowable limits for the throat opening.) Do not attempt repair of a hook by heat treating, bending or attaching anything by welding. Such procedures will weaken and may cause failure of the hook. Other Inspections 1. With the lever in the up position, while pulling down on the chain or with a load connected, check for a clicking sound when the handle is rotated in a clockwise direction. If these sounds are not present, or if irregular clicking noises develop, do not use the hoist - have it inspected and repaired by an authorized service center. 2. With the lever in the up position, check free play in handle rotation. Free play is measured by the distance the handle travels before resistance or gearing is felt. If free play has reached 3/4 of a turn, brake discs are worn and should be replaced by a JET authorized service center. 3. The brake mechanism must be kept clean and free from dirt, water, and oil. Never allow oil to penetrate the braking mechanism. The brake should not slip while using the hoist. 4. If the lever hoist has not been used for an extended period of time, check for proper operation before putting into service. 5. Always keep your hoist clean and store in a clean, dry location. 9 Figure 3

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9
The load chain supplied with
your
JET
lever
hoist
is
designed,
manufactured, and tested for proper fit and
durability. If chain should ever need replacing,
for your own safety use factory replacement
chain
only.
Use
of
other
than
factory
replacement chain may cause serious injury
and/or damage to the lever hoist.
Inspecting Hooks
It is important to check top and bottom hooks for
proper opening and other signs of deformation or
damage. Replace a hook immediately if any of the
following problems are identified:
•
The safety latch no longer contacts the hook
opening.
•
The vertical angle at the neck of the hook
reaches 10
°
(see Figure 3).
•
Chemical corrosion or cracks on the hook.
•
Excessive wear on the inside surface.
•
The throat opening has enlarged. (See page
11 for the maximum allowable limits for the
throat opening.)
Do not attempt repair of a
hook by heat treating, bending or attaching
anything by welding. Such procedures will
weaken and may cause failure of the hook.
Other Inspections
1.
With the lever in the up position, while pulling
down on the chain or with a load connected,
check for a clicking sound when the handle is
rotated in a clockwise direction. If these
sounds are not present, or if
irregular
clicking
noises develop, do not use the hoist – have it
inspected and repaired by an authorized
service center.
2.
With the lever in the up position, check free
play in handle rotation. Free play is measured
by the distance the handle travels before
resistance or gearing is felt. If free play has
reached 3/4 of a turn, brake discs are worn
and should be replaced by a JET authorized
service center.
3.
The brake mechanism must be kept clean and
free from dirt, water, and oil. Never allow oil to
penetrate the braking mechanism. The brake
should not slip while using the hoist.
4.
If the lever hoist has not been used for an
extended period of time, check for proper
operation before putting into service.
5.
Always keep your hoist clean and store in a
clean, dry location.
Figure 3