Haklift Oy
Asessorinkatu 3-7
20780 Kaarina, Finland
Tel. +358 2 511 5511
www.haklift.com
Lifting Solutions Group
Axel Johnson International
Checking the oil level
1. Turn the release valve counterclockwise to allow the ram to fully retract. It may be necessary to apply
force to the saddle for lowering.
2. With the jack in the level position, remove the oil fill plug. Stand jack in vertical position with handle
socket down. The oil should be level with the bottom of fill hole. If not, top up. Do not overfill. Always
fill with new, clean hydraulic jack oil.
3. Replace the fill plug.
4. Check jack operation.
5. Purge air from the system as required.
System air purge
1. Turn the release valve counterclockwise one full turn to open.
2. Pump the handle eight full strokes.
3. Turn the release valve clockwise to close the valve.
4. Pump the handle until the ram reaches maximum height and continue to pump several times to remove
trapped air in the ram.
5. Carefully and slowly pinch the oil fill plug to release the trapped air.
6. Turn the release valve counterclockwise one full turn and lower the ram to the lowest position. Use
force if necessary.
7. Turn the release valve clockwise to the closed position and check for proper pump action. It may be
necessary to perform the above more than once to assure air is evacuated totally.
TROUBLE SHOOTING
Problem
Possible cause
Action
Jack will not lift to full height
-Low oil level
-Check oil level
Jack will not hold the load
-Release valve not closed
-Hydraulic jack oil contaminated
-Pump valves not sealing
-Cylinder ram binding
-Contact the
manufacturer/supplier
Jack will not lower
-Cylinder ram binding
-Parts worn
-Internal damage
-Contact the
manufacturer/supplier
Jack feels spongy when lifting
-See air purge section
-See air purge procedure
