INSTRUCTIONS - Model 5621SD - 20 TON LOW PROFILE AIR/HYDRAULIC BOTTLE JACK
2.5 For best performance and longest life, replace the complete jack oil at least once per year: W ith the ram
fully lowered, remove the oil filler plug, lay the jack on its side and drain the oil into a suitable container, then
fill with high quality hydraulic jack oil as described in 2.4, reinstall the filler plug.
NOTE:
Dispose of hydraulic oil in accordance with local regulations.
2.6 It is recommended that an annual inspection be done by qualified technicians.
3.TROUBLESHOOTING
Symptom
Possible Causes
Corrective Action
Jack will not lift load
Release valve not tightly closed
Overload condition
Air supply inadequate
Air trapped in system
Close release valve firmly
Remedy overload condition
Ensure adequate air supply
Purge away air from system
Jack will lift, but will not maintain
pressure
Release valve not tightly closed
Overload condition
Hydraulic unit malfunction
Close release valve firmly
Remedy overload condition
Contact your local service center
Will not lower after unloading
Reservoir overfilled
Linkages binding
Drain oil to proper level
Clean and lubricate moving parts
Poor lift performance
Hydraulic oil level low
Air trapped in system
Add oil to proper level
Purge away air from system
Will not lift to max height
Hydraulic oil level low
Add oil to proper level
Capacity
Min Height
Ram Travel
Screw Adj.
Max Height
Air Pressure
Air Inlet Fitting
20ton
7.01”
3.35”
2.40”
12.76”
110-120 Psi
1/4" NPT
