Use and Care Manual

13
Timing Marks for Gear Replacement
If the gears on the JLH hoist need replacement or removal for any reason, make sure they are re-installed
correctly. Figure 12 shows the proper orientation of the timing marks when meshing the gears.
Figure 12
Troubleshooting
The numbers in parentheses refer to the parts breakdown on the following page.
Trouble Probable Cause Remedy*
Hoist will not lift (no
clicking sound).
Pawl (#12) not engaging ratchet disc
(#15); possible dirt or foreign material.
Clean and lubricate pawl/ratchet disc
assemblies.
Pawl spring (#11) is damaged. Replace pawl spring.
Selector switch spring (#23) is loose or
damaged.
Tighten or replace selector switch
spring.
Load slips or drifts
while being lowered.
Dirt/corrosion/foreign material in hoist
components.
Inspect and correct problem. Keep hoist
clean and lubricated.
Brake is slipping. Disc hub (#14) is worn
from long-term use, or is damaged from
overloading or misuse.
Replace disc hub. Do not overload
hoist.
Hoist will not lower
load.
The brake has caught. (Hoist was left
under load condition for extended
period, or was shock-loaded while
operating.)
Place selector lever in DOWN position
and pull hard on the lever handle to re-
set the brake. Resume operation.
Brake components are corroded or
damaged.
Replace components as needed; keep
hoist clean and lubricated.
Handwheel will not
move in and out.
Disc hub (#14) is damaged. Replace disc hub.
Hoist will not
freewheel.
Brake has caught because load chain
was pulled too hard.
Re-set by rotating handwheel clockwise
while pulling down on load chain.
Return hoist to freewheel mode and
continue. Pull load chain less forcibly.
* Any disassembly or repair of the lever hoist should be performed by properly trained personnel. Call JET, or
go to jettools.com to find an authorized Service Center nearest you.