Use and Care Manual

12
Point Hooks
Point or “shipyard” hooks are available for your
JET lever hoist, in 1-1/2 ton and 3 ton load sizes.
They are available in both upper and lower hook
styles.
Point hooks are used in the metal and ship building
industries, and are designed for positioning steel
plate and fixtures before welding.
Inspection and Maintenance
Read and follow ANSI Inspection and Maintenance
Instructions. Know the meaning of Frequent
Inspection, Periodic Inspection, Normal Service,
Heavy Service, and Severe Service. It is the
customer’s responsibility to understand and follow
all ANSI and JET inspection and maintenance
instructions.
The lever hoist should be stored in a clean, dry
environment. Clean and oil the hoist before
storage.
Hoists that are installed out-of-doors should be
covered or brought inside when not in use.
Periodically apply a light coat of 30 weight oil to the
load chain. Also lubricate the safety latches and
the bearings in the hooks.
Annually, the hoist should be disassembled,
inspected, and cleaned by trained and experienced
personnel only. Contact a JET authorized service
center by calling your dealer or visiting our web
site at jettools.com.
Wear Limits
Load Chain Wear Limits
Carefully inspect the entire load chain. As
illustrated in Figure 12, measure five consecutive
links with calipers to find the length, Compare the
results with the table in Figure 12. Check every
three feet and especially where excessive wear is
indicated. Any load chain that shows noticeable
deformation or heat influence must be replaced
with a new one.
Never extend load chain by
welding a second piece to the original.
Hoist
Capacity
5 Links Normal
(mm)
5 Links Limit
Replace if ≥
1/4 ton 2.36” 2.433”
1/2 ton 2.36” 2.433”
3/4 ton 3.54” 3.629”
1-1/2 ton 4.72” 4.838”
3 ton 5.91” 6.058”
6 ton 5.91” 6.058”
Figure 12
Hook Wear Limits (Top and Bottom)
Replace the hook when “A” in Figure 13 is wider
than the “Throat Opening Limit” shown in the
accompanying table.
Never heat treat the hook or attach anything to the
hook by welding.
Capacity
Standard
Throat
Opening
(A)
Throat
Opening
Limit
(A)
1/4 ton 1.40” 1.47”
1/2 ton 1.38” 1.45”
3/4 ton 1.46” 1.54”
1-1/2 ton 1.85” 1.95”
3 ton 2.46” 2.59”
6 ton 3.07” 3.23”
Figure 13