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Troubleshooting JTJ-ST Toe Jacks
Trouble
Toe will not extend.
Jack will not lift to full
height.
Toe extends, but falls
immediately.
External oil leak.
Replacement Parts
Replacement parts are listed on the following pages. To order parts or reach our service department, call 1-
800-274-6848 between 8:00 a.m. and 5:00 p.m. (CST), Monday through Friday. Having the Model Number and
Serial Number of your machine available when you call will allow us to serve you quickly and accurately.
Probable Cause
Release stem is open.
Dirt or crack in valve sealing section.
Not enough or too much hydraulic jack
oil in reservoir.
Air in the system.
Damage to top or bottom of reservoir,
release stem, or pump.
Remedy
Close release stem completely.
Clean and repair or replace.
Fill reservoir with correct amount of
hydraulic jack oil.
Press ram down to the lowest position
and let air out by pushing fill plug
sideways.
Repair or replace.
5
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