trOUBLeSHOOtinG
Maintenance
Important: Use only good grade hydraulic jack oil. Avoid mixing different types of fluid and NEVER use brake fluid,
turbine oil, transmission fluid, motor oil or glycerin. Improper fluid can cause premature failure of the jack and the
potential for sudden and immediate loss of load. Mobil DTE 13M or equivalent recommended.
adding oil
1. With saddle fully lowered, set jack in its upright, level position. Remove oil filler screw.
2.
Fill until oil is level with the oil filler screw hole, reinstall oil filler screw.
changing oil
For best performance and longest life, replace the complete fluid supply at least once per year.
1. With saddle fully lowered, remove oil filler screw.
2. Lay the jack on its side and drain the fluid into a suitable container.
note.
Dispose of hydraulic fluid in accordance with local regulations.
3. Set jack in its level position.
Fill until oil is level with the oil filler screw hole, reinstall oil filler screw.
Lubrication
1. A periodic coating of light lubricating oil to pivot points, axles and hinges will help to prevent rust and assure that
casters and pump assemblies move freely.
2. For air option models Atd-7431 Series A: When used on a daily basis, air pump model should be internally lubricated
before each use. Use only good quality air tool lubricant. If no inline oiler is used, pour a teaspoon of air tool oil into
the inlet of the air supply inlet. Simply operate the jack using the air feature in order to fully distribute the oil.
cleaning
Periodically check the pump piston and ram for signs of rust or corrosion. Clean as needed and wipe with an oily
cloth.
note:
Never use sandpaper or abrasive material on these surfaces!
Storage
When not in use, store the jack with saddle fully lowered.
5
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
Tools Tech. Service
Jack will not lower after unloading • Reservoir overfilled
• Linkage binding
• Ensure load is removed, then drain
fluid to proper level
• Clean and lubricate moving parts
Poor lift performance
• Fluid level low
•
Hydraulic unit malfunction
• Ensure proper fluid level
•
Discontinue use, Contact ATD
Tools Tech. Service
Jack will not lift to full extension
• Fluid level low
•
Ensure proper fluid level
