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Venting
Open the venting valve by turning it
anticlockwise.
Pump the handle quickly several times to
vent the system. Close the venting valve
again.
Cleaning and maintenance
The hydraulic jack can be wiped with
a damp cloth and a little detergent, if
required.
Do not use strong, abrasive or corrosive
cleaning agents on the hydraulic jack,
as these may damage the components.
Oil and grease can be removed using
cleaning benzine or similar.
Lubricate all moving parts regularly with
lubricating spray or a light oil and check
the hydraulic oil level before each use.
Always store the hydraulic jack in its fully
lowered position, so that the hydraulic
cylinder gets the best protection against
rusting.
Troubleshooting
Problem
Cause
Possible solution
The jack cannot be
lowered fully.
1. There is air in the hydraulic
system.
2. The venting valve is stuck.
1. Vent the hydraulic system.
2. Clean and lubricate the
venting valve.
The hydraulic jack
cannot hold the load.
1. The venting valve is open.
1. Close the venting valve.
The hydraulic jack
cannot lift to full
height.
1. The oil level is too low.
2. There is air in the hydraulic
system.
1. Unscrew the oil plug and
top up with fresh hydraulic
oil.
2. Vent the hydraulic system.
The hydraulic jack
seems weak when
lifting.
1. There is air in the hydraulic
system.
2. The vent valve is not fully
closed.
3. The hydraulic oil is
contaminated.
1. Vent the hydraulic system.
2. Close the venting valve.
3. Replace the hydraulic oil.
The hydraulic jack
cannot lift the load.
1. The load is too heavy.
2. There is air in the hydraulic
system.
3. The oil level is too low.
1. Use a stronger jack for the
task.
2. Close the venting valve.
3. Unscrew the oil plug and
top up with fresh hydraulic
oil.
25


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