Advertisement
6. TROUbLESHOOTING
PROBLEM
Lift does not elevate
Lift elevates unevenly.
Lift descends as soon as elevating action
ceases.
Lift fails to lower.
IMPORTANT: NO RESPONSIBILITY IS ACCEPTED FOR INCORRECT USE OF THIS PRODUCT.
Hydraulic products are only repaired by local service agents. We have service/repair agents in all parts of the UK.
DO NOT RETURN THE PRODUCT TO US. Please telephone us on 01284 757500 to obtain the address and phone number of your local
agent. If product is under guarantee please contact your dealer.
De-commissioning product
Should the product become completely unserviceable and require disposal, draw off the oil into an approved container and dispose of the
product and the oil according to local regulations. See also 'Environmental Protection'.
7. MAINTENANCE
7.1.
Before each use, check the vehicle lift to ensure it is not damaged or worn. If in any doubt DO NOT use the unit. Remove it from
service immediately and contact your local Sealey dealer for advice/repairs.
7.2.
Refilling the hydraulic system with oil is rarely necessary but the level should be checked in the event of a loss of performance. To
check oil level, ensure the ram is fully lowered, remove filler plug and check that level is within10mm of filler hole. Add a good quality
jack oil, such as SEALEY HYdRAuLIc JAcK OIL.
7.3.
change the oil every 100 working hours.
WARNING: DO NOT use brake fluid, or any fluid other than hydraulic jack oil as this will cause serious damage to the jack
and will invalidate the warranty!
7.2.
pneumatic circuit (fig.8)
7.2.1. See section 5.6
7.2.2. The two cylinders are mounted adjacent to the hydraulic pump stowage tray on the main frame. They are actuated by the foot pedal
on the hydraulic unit. See 5.8.8.
© Jack Sealey Limited
cAuSE
Mains air at 6bar to 7bar not connected.
Low oil level
Hydraulic system not primed correctly
Oil filter blocked
Hydraulic hose accidentally punctured or
crushed by an external load.
Tank not vented.
Air in hydraulic system.
Pump seal faulty
Pawl prop has not disengaged from parking
station.
Insufficient load on the lift.
3 port 2 position valve malfunction.
Obstacle beneath the lift.
3/2
Pawl lift
Valve
cylinders
Original Language Version
REMEdY
check connection and available air pressure
Add oil. (5litre capacity tank)
Operate the foot pedal in "RELEASE" mode
and the air valve at the same time to start the
pump.
contact your Sealey dealer when above
remedies do not resolve the problem. DO
NOT attempt to service hydraulic pump
module.
clean or replace
Replace the hose and bleed entire system.
Remove the external load.
Vent the tank using the vent screw on the
cap.
Operate the foot pedal in "RELEASE" mode
and the air valve at the same time to start the
pump.
contact your Sealey dealer. DO NOT attempt
to service hydraulic pump module.
check the pawl lift cylinders are operating.
check the mechanism, repair if required. Test
valve function item "C" in fig.6.
choose a safe method of increasing the load.
Replace the valve after first isolating the
mains air supply.
Raise the load until the pawl props register
with the nearest notch, making it safe to
remove the obstacle.
fig.8
MAInS
AIR
AVR2500A
Issue: 1 - 07/11/14
Advertisement
