Haklift Oy
Asessorinkatu 3-7
20780 Kaarina, Finland
Tel. +358 2 511 5511
www.haklift.com
Lifting Solutions Group
Axel Johnson International
MAINTENANCE
Routine inspection
Before operation, inspect and confirm that:
All the stoppers and screws of the jack have been secured up tightly.
There is no oil leaking from the jack.
There is no cracks, damages or deformation on the pump body, toe plate or base.
The pump should operate normally without load.
When the jack is lowering, operator should check whether the reducing/lowering movement is stable.
Slight vibration is normal.
Thorough inspection:
On a regular basis (at least once a year – more frequent if required by working
conditions) a thorough inspection of the product shall be carried out and documented by a qualified person.
Add oil
If the jack cannot be pumped up to its rated height, it is necessary to add hydraulic oil into the oil tank. The
hydraulic oil to be used must have a quality of ISO VG22 or equivalence. Mixing of different fluids is prohibited.
TROUBLESHOOTING
Symptom
Possible cause
Actions
Jack can’t be pumped up
properly.
-The release valve is not closed.
-Close the release valve by
turning the unload handle (16)
tightly in clockwise.
-Air inside pump
-Loose the screw (37) to release
air from the pump, then screw it
in tightly.
Jack can’t be released down from
the top position.
-The release valve is not opened
enough.
- Open the release valve by
turning the unload handle (16)
counter-clockwise.
Jack can’t be pumped up to its
rated max. height.
-There is not enough oil.
-Screw out the oil fill screw (10)
and add hydraulic jack oil of high
quality.
The oil has leaked around the
plunger.
-Seals are worn out.
-Replace worn seals with new
ones (8) and (9).
