MAINTENANCE
Important: Use only good grade hydraulic jack oil. Avoid mixing different types of uid and Never use brake uid,
turbine oil, transmission uid, motor oil or glycerin. Improper uid can cause failure of the jack and the potential for
sudden and immediate loss of load. We recommend Mobil DTE 13M or equivalent.
Adding oil
1. With saddle fully lowered set jack in its upright, level position. Locate and remove vent screw.
2. Fill with oil until ~3/16” above the inner cylinder as seen from the oil ller hole. If the oil level is too low, the jack
will not raise to its advertised maximum height. Reinstall the vent screw.
Changing oil
For best performance, replace the complete uid supply at least once per year.
1. With saddle fully lowered, remove the vent screw and drain the uid into a suitable container.
2. Fill with oil until ~3/16” above the inner cylinder as seen from the oil ller hole. Reinstall vent screw.
Note: Dispose of hydraulic uid in accordance with local regulations.
Lubrication
A periodic coating of light lubricating oil to pivot points, axles and hinges will help to prevent rust and assure that
wheels, casters and pump assemblies move freely.
Cleaning
Periodically check the pump piston and ram for signs of rust/corrosion. Clean as needed and wipe with oily cloth.
TROUBLESHOOTING
Symptom Possible Causes Corrective Action
Jack will not lift load
• Release valve not tightly closed
• Load is too heavy
• Ensure release valve tightly closed
• Consider higher capacity jack
Jack will lift, but not maintain
pressure
• Release valve not tightly closed
• Hydraulic unit malfunction
• Ensure release valve tightly closed
• Discontinue use, contact ATD
Technical Service
Jack will not lower after unloading • Reservoir overlled
• Linkages binding
• Drain uid to proper level
• Clean and lubricate moving parts
Poor lift performance • Fluid level low
• Hydraulic unit malfunction
• Ensure proper uid level
• Discontinue use, contact ATD
Technical Service
Will not lift to full extension • Fluid level low • Ensure proper uid level
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Storage
When not in use, store the jack with saddle fully lowered. This will help prevent rust and corrosion to those critical
surfaces.
Note: Never use sandpaper or abrasive material on these surfaces!
