Troubleshooting
Caution: To prevent personal injury, all inspection, maintenance, and repair procedures must be performed
when the jack is free of load.
Trouble
Solution
Jack will not lift load or leaks down
excessively
Jack will not lift to its full height
Return spring is broken or linkages are binding.
Replace spring if broken. Grease pivot shaft and
all lift arm linkages.
The hydraulic system has trapped air. Follow Step
5 of the “ASSEMBLY” procedure on page 3.
Discharge ball is not sealing hydraulic system
and oil may be dirty. Manually flush hydraulic
system. Open the release valve, as required, to
raise and lower the lift arm. Manually raise and
lower lift arm.
Jack will not lower completely
Jack will not lift smoothly or jack feels
spongy
Jack will not hold load or handle rises
1. The release valve is not closed. Turn the valve
clockwise tightly. If this does not work, remove
handle, lubricate handle receptacle and handle
end, then retry.
2. The hydraulic system has trapped air. Follow
Step 5 of the “ASSEMBLY” procedure on
page 3.
3. Pump seals or back-up ring may be defective.
Clean hydraulic fluid passages, replace seals
and refill hydraulic fluid. (Must be serviced by
qualified service center)
2. Low on hydraulic fluid. Follow Step 5 of the
“ASSEMBLY” procedure on page 3.
1. Low on hydraulic fluid. Follow Step 5 of the
“ASSEMBLY” procedure on page 3.
