Jackco 69120B, User Manual, Page: 3 / 6

Specifications
Lifting Capacity Min Height Max Height Shipping Weight Working Pressure
20 Ton 9.6 inch 245mm 18.7 inch 475mm 39.6 Lbs 18kg 101-145 psi
Inspection
Prior to each use, visually inspect for leaking hydraulic oil, damaged, loose or missing parts. If jack
is worn or damaged, remove from service and contact your equipment dealer / service center for
repair.
Maintanence
Check oil level. With the jack in an upright position and the ram completely retracted, open the
release valve (turn counter-clockwise) and remove the filler plug. The oil level should be just up to
the hole. Fill if necessary with clean hydraulic jack oil.
Lubricate internal components. With the release valve open, manually pump the handle several
times.
Purge the hydraulic system of air. During transit the unit may become "air-bound", causing a
spongy ram action. To purge the system. close the release valve (turn clockwise). Manually pump
the jack to full height. Open the release valve and push down on the ram. Repeat these steps if
necessaty to completely purge the system.
Keep the jack clean. Occasionally lubricate the handle socket pivot point, extension screw, release
screw thread, and air valve to prevent corrosion.
Operation
1. Jack operation is contolled either manually or by external air pressure. Either insert the handle
into the handle socket to manually operate or connect to an external air pressure source (clean
connections prior to assembly).
2. To raise the jack, turn the release valve clockwise until tight and either manually pump with the
provided handle or while connected to an air supply depress the air valve.
3. To lower the jack turn the release valve counter clockwise slightly and very slowly. Be careful
not to turn the release valve too quickly or more than two full rotations, otherwise, dangerous
sudden lowering may occur.
Problem Cause Solution
Air pump will not operate • Low air pressure
• Air outlet is frozen
• Lack of lubrication
• Keep air pressure between 101-145 psi
• Stop using and thaw frozen outlet
• Supply oil to air valve
Air pump acts but ram
won’t rise
• Release valve is open
• Lack of hydraulic oil
• “Air-bound” system
• Close valve clockwise
• Add hydraulic oil
• See maintenance
Ram will not rise to
highest position
• Lack of hydraulic oil
• Release valve not fully closed
• Add hydraulic oil
• Close valve clockwise
Ram lowers slowly • Outlet valve dirty or defective
• Air pump packing defective
Contact your equipment dealer / service center
Ram rises slowly • Filter is filled with dirt
• Air pump packing defective
• Release valve not fully closed
Contact your equipment dealer / service center
Oil blowing from air
pump
Air pump packing defective Contact your equipment dealer / service center
Ram will not lower Release valve/circuit defective Contact your equipment dealer / service center
Trouble Shooting