9
GB
You must fill in enough fluid to cover the cylinder
visible inside. Re-insert the rubber plug (7) in the
filler hole.
b) Venting (Fig. 2)
The hydraulic system has to be vented at least after
each time you add hydraulic fluid. Air pockets may
also form in the hydraulic fluid passages if the jack is
not used for a long time. This is the case if the load
sinks again abruptly after being raised half or only
part of the way.
To vent the hydraulic system, pump up the unloaded
jacking arm approximately half way. Now press your
foot against the jacking arm to exert a little pressure
on the hydraulic system. The lowering screw (6)
must of course be closed when you do this.
Use a screwdriver to press the rubber plug (7)
slightly sideways until the air escapes. Now lower the
trolley jack by opening the lowering screw and repeat
the procedure 2 or 3 times. Any drops of fluid which
may then escape are irrelevant for the jack’s further
use. You can now rest assured that there are no
longer any air pockets in the fluid passages and that
the jack will work correctly.
Catch old and escaping fluid in a special
container and deliver to your old oil disposal
center!
6. Raising vehicles (Fig. 1)
Before you raise a vehicle, make sure it is standing
on a firm surface so that the jack does not sink into
the ground under the raised load. In hot summer
conditions the jack may easily sink into tarmac
surfaces and slip sideways.
Pull the hand brake and also secure the vehicle with
chocks if available. Now place the jack under the
vehicle so that the support disk can rest against a
strong part of the floor. On old vehicles with rusted
floor elements there is the risk of the support disk
breaking through the floor.
The drain screw (6) must be closed. Now raise the
support plate (2) using the jack handle (7) until it is
short of making contact with the vehicle. You can
now adjust the plate accurately so that the vehicle
can be jacked up correctly and safely. You can also
adjust the support plate’s height by a few centimeters
using the adjustment spindle.
The jacked up vehicle must always be supported
with at least one axle stand for your own safety if
only one wheel is jacked.
After you have completed the work, first remove the
axle stand and then lower the support plate (2) with
the jack handle (5) by slowly turning the drain screw
(6). You can control the lowering speed yourself by
opening the lowering screw (6) to a greater or lesser
degree. The jack is equipped with an overload valve
on the side of the hydraulic pump. This valve is set at
the factory so that the maximum load cannot be
exceeded.
Do not adjust this valve or you will forfeit your rights
under the warranty if the jack suffers any damage.
When the support plate (2) has reached its highest
position, the safety valve and an overflow device will
ensure that the hydraulic system is no longer
pressurized even if you continue to pump the jack
handle.
7. Cleaning, maintenance and ordering
of spare parts
Lifting equipment must be serviced and repaired in
accordance with the manufacturer's instructions. The
servicing and repairs must be performed by experts.
7.1 Maintance
Every hydraulic system is sealed with O-rings or cup
packings which result in wear depending on how
often the jack is used. Repair sets are available from
Customer Service on request. To prevent damage to
the seals, use only acid-free hydraulic fluid to top up
the system.
Catch old and escaping fluid in a special
container and deliver to your old oil disposal
center!
You should always move the hydraulic system
(piston) to idle position (piston inserted) once the
trolley jack is no longer needed. This will protect the
precision-machined surfaces of the piston and the
piston rod from corrosion.
Your jack will give you good service if you use only
high-grade hydraulic fluid. Never mix different types
of fluid! Never use brake fluid, alcohol, glycerin, dirty
fluid, etc.
7.2 Ordering replacement parts:
Please quote the following data when ordering
replacement parts:
n Type of machine
n Article number of the machine
n Identification number of the machine
n Replacement part number of the part required
For our latest prices and information please go to
www.isc-gmbh.info
