Capacity
Standard
Throat
Opening
(A)
Standard
Throat
Limit
(A)
0.25 ton
0.82"
0.89"
0.50 ton
0.96"
1.03"
0.75 ton
1.46”
1.61”
1.5 ton
1.85”
2.04”
3 ton
2.46”
2.71”
6 ton
3.07”
3.38”
14
13
• Carefully inspect the entire load chain. As illustrated in (FIG 12),
measure five consecutive links with calipers to find the length,
Compare the results with the table in (FIG 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.
FIG 12
FIG 13
WARNING :
Never heat treat the hook or attach anything to
the hook by welding.
INSPECTION
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
Sumner 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
Sumner authorized service center by calling your dealer or visiting
our web site at www.sumner.com.
WEAR LIMITS LOAD CHAIN
WARNING :
Never extend load chain by welding a second
piece to the original.
INSPECTION
HOOK WEAR LIMITS (TOP and BOTTOM)
• Replace the hook when “A” in (FIG 13) is wider than the “Throat
Opening Limit” shown in the accompanying table.
Capacity
5 Link
Normal
(in)
5 Link
Limit
(in)
0.25 ton
2.36" 2.43"
0.50 ton
2.36" 2.43"
0.75 ton
3.54” 3.65”
1.5 ton
4.72” 4.86”
3 ton
5.91” 6.09”
6 ton
5.91” 6.09”
