17
General Maintenance:
1.
Check both winch handles for wear or bends.
2.
Inspect 3” roller wheels mounted on the winch
and top mast for damage and smooth rotation.
3.
Examine all bolts and nuts to be sure they are
tight.
4.
Legs, forks, braces and base should be dent
free and damage free.
5.
Check pulley covers for damage (indentations)
which can restrict the rotation of the pulleys.
6.
Make sure load line is seated in all pulleys and
that pulley rotates without obstruction.
7.
Make sure stabilizer legs slide freely into
mounting sockets and plunger pins lock legs
into position.
8.
Check all roller wheels for free rotation.
9.
Inspect masts and carriage hold-down device.
10. Raise mast sections to inspect for free,
smooth sliding action. Make sure wire slide-
ways are free of dust and oxidation and spray
a light coat of silicone lubrication in slideways.
11. Make sure all caster wheels rotate freely and
are undamaged.
12. Inspect all plunger mechanisms and apply
light grease as required.
13. Check to be sure that all three mast covers are
attached to the lift.
14. Check the safety brake operation.
Safety Brake Maintenance:
The safety brake will automatically engage when
the unit is horizontal, preventing disassembly of
the mast sections. When this occurs, the masts
will extend, but not retract. A special tool which
can be found in the Operator’s Manual tube is re-
quired to release the brakes and disassemble the
unit. If the tool is lost or damaged, one can be
made simply from a piece of 1/8 to 1/4 inch diame-
ter steel rod 9 inches long, with both ends bent
into an “L” shape 1-1/4” long.
To release the brake, place the tool in the right
side (looking at the lift from the bottom) of the mast
assembly (or carriage) as shown on page 12, into
the access slot and through the hole in the coun-
terweight. Pull the hook tool toward you and the
brake will be released.
It may be necessary to push the locked mast (or
carriage) up slightly while pulling on the tool.
Once the brake is released, maintain pressure on
the tool and slide the mast sections (or carriage)
apart.
Repeat this step for each mast section.
MAINTENANCE
INSTRUCTIONS (continued)
Brake Release Tool
WARNING
Modifying the lift in any way
can cause injury or death!
CAUTION
Replace all worn or damaged
parts only with Sumner parts.
