6

MAINTENANCE

PURGING AIR FROM THE SYSTEM

If air bubbles become trapped inside

the hydraulic system, the efficiency

of the jack will be reduced. If the air

cannot be dispersed just by pumping

the handle with the valve open, it

can be purged from the system as

follows.

1. Turn the control valve counter-

clockwise, relieving the pressure

within the jack, then remove the

cover plate & oil filler plug.

• A broad-bladed screwdriver is required for the plug.

2. Pump the handle several times to purge air from the system.

3. Replace the oil filler plug, then turn the control valve clockwise and test the

jack. If efficiency is still low, check the oil level as below.

CHECKING /MAINTAINING THE OIL LEVEL

If the jack has been stored for long periods, check for oil leaks before use. If

necessary, check the oil level as follows:

1. Ensure the jack is fully lowered by turning the control valve anticlockwise.

2. Remove the cover plate and the oil filler plug.

• The oil should be almost level with the bottom of the oil filler hole.

• il can be topped up using Clarke Hydraulic Oil (p/no 3050830 for 1

litre).

3. Purge any air from the system and replace the oil filler plug.

4. Dispose of any old/spilled oil appropriately and wipe up any spillage.

GENERAL CARE

1. Periodically lubricate the hinges, front wheels & rear castors with light oil.

Should the arm become stiff, apply a shot of grease to the grease nipple

on the top of the lifting arm as shown above.

2. Store in a dry location.

3. In the event of damage or broken components, replacements are

available from Clarke Parts & Service.