6. OPERATION
REFER TO FIG.6
PREPARATION BEFORE USE.
6.8.1.
You will require an air pressure of at least 100psi, (max 120psi) and an air flow of 9.5cfm to operate jack.
6.8.2.
Check oil level before use (see Section 7.3)
6.8.3.
Connect the air supply hose .
6.1.
ELIMINATE ANY AIR IN THE SYSTEM.
6.1.1.
Before using the jack, purge the hydraulic circuit in order to eliminate any possible air that may have entered the system during transit.
This can be achieved by raising and lowering the jack several times before first use
6.2.
USING THE JACK.
WARNING!
Ensure you have read and understood the safety instructions in section 1 before commencing work.
6.2.1.
Lift the lock lever, position the handle as required and release the lock lever. Ensure full and secure
engagement of locking pin.
6.2.2.
Position the Jack under the vehicle manufacturer’s recommended jacking point.
Refer to vehicle hand book.
6.2.3.
Connect the quick coupler-male (on the cross valve) into the workshop air supply hose quick
coupler-female. Turn on air supply.
6.2.4.
Moving the handle of the selector valve (fig.7) to the left the jack will rise, moving the handle to right,
the jack will descend. When the handle is in the middle position, the jack will stop operating.
6.2.5.
When the vehicle has reached the desired height release the handle which will stop further air
flow and hold the jack at the height to which it has been raised.
6.2.6.
Place axle stands correctly in position and ensure section1 safety instructions are strictly applied
before performing any task.
6.2.7.
Ensure there are no persons or obstruction beneath the vehicle before lowering, and remove any axle stands.
6.2.8.
To lower the jack, slowly move the selector valve clockwise and the jack will lower in a controlled manner.
6.2.9.
Once completely lowered, remove the jack from under the vehicle. If you have finished using the jack, turn the air supply off,
disconnect the jack from the air line and store the jack and air line accordingly.
NOTE:
Always store the jack with the piston rod in the lowest position.
7. MAINTENANCE
IMPORTANT: Only fully qualified personnel should attempt maintenance or repair.
WARNING!
Disconnect jack from air supply before changing parts, servicing or performing any maintenance.
7.1.
When the jack is not in use, the piston rod must be in the lowest position to minimise corrosion.
7.2.
Keep the jack clean and lubricate all moving parts on a regular basis.
7.3.
To check oil level, fully lower jack. Remove the oil filler screw. The correct oil level should be up to the entrance of the oil filler opening.
7.4.
If oil level is low, fill as required.
NOTE:
Use a good quality jack oil, such as SEALEY HYDRAULIC JACK OIL.
WARNING! DO NOT
use brake fluid, or any fluid other than hydraulic jack fluid as this may cause serious damage to the Jack and will
invalidate the warranty.
IMPORTANT: NO RESPONSIBILITY IS ACCEPTED FOR INCORRECT USE OF THE MACHINE.
Owing to their size and weight, hydraulic products should ideally be repaired by local service agents. We have service / repair
agents
inmost parts of the UK. Before returning your product please call our technical helpline on
01284 757505
for advice and trouble
shooting guidance.
8. TROUBLESHOOTING
Original Language Version
© Jack Sealey Limited
YAJ20B.V4 Issue 1 18/05/21
fig.7
PROBLEM
POSSIBLE CAUSE
REMEDY
Jack will not lift the load
1. Release valve not tightly closed.
1. Tighten release valve
2. Low oil level
2. Check and add oil, see section 7.
3. Defective or worn internal parts.
3. Discontinue use and contact a repair centre.
4. Load exceeds maximum allowance.
4. Use a higher capacity jack.
Jack will not hold the load
1. Hydraulic unit malfunction.
1. Discontinue use and contact a repair centre.
Jack will not descend to minimum
height, or will not remain in
lowered position.
1. Reservoir oil overfilled
1. Check and ensure proper oil level.
.
.
Jack will not lift to max. height.
1. Low oil level.
1. Check and ensure proper oil level, see section 6.2.
Jack will not function after above
solutions have been tried.
1. Internal malfunction or structural damage.
1. Discontinue use and contact an authorised repair
centre.
