Original Language Version
WaRnInG!
ensure you have read and understood the safety instructions in section 1 before
commencing work.
6.3.1. Position the jack under the vehicle manufacturer’s recommended jacking point
(see vehicle hand
book).
Note: Use the extension pins (fig.4.D) to get the jack closer to the jacking point before engaging the
jack. See specification for capacity when using the extension pins.
6.3.2. Whilst holding the main jack handle, lifting is achieved by pushing the control lever to the 'up'
position (fig.3.B).
6.3.3. When the vehicle has reached the desired height release the control lever which will automatically
return to the middle hold position stopping any further air flow, holding the jack at the height to
which it has been raised.
6.3.4. Place axle stands correctly in position and ensure section 1 safety instructions are strictly applied
before performing any task.
6.4.
Lowering the Jack
6.4.1. Ensure there are no persons or obstruction beneath the vehicle before lowering, and remove any
axle stands.
6.4.2. Whilst holding the main jack handle lowering is achieved by pushing the control lever to down
position (fig.3.A), and the jack will lower in a controlled manner.
6.4.3. Once completely lowered releasing the control lever will return to the middle hold position.
Remove the jack from under the vehicle. If you have finished using the jack, turn the air pressure
supply off and disconnect from the air line and store the jack and air line accordingly.
fig.4
6.3.
using the Jack
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 must be in the lowest position to minimise corrosion.
7.2.
Keep the jack clean and lubricate all moving parts with air tool oil on a regular basis.
7.3.
To check oil level, lower jack fully. Remove the filler plug (see fig.5 for YAJ301 or fig.6 for other models). The oil surface should be
level with the indicator inside the filler hole, for YAJ301 it should be level with the bottom of the filler hole. Top up the oil level if
necessary but do not overfill as the jack will become inoperative. If inadvertently overfilled the excess oil should be poured off. After
topping up or pouring off excess oil it may become necessary to purge air from the unit. See section 6.2.
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!
7.4.
Ensure the air filter located in the air valve is clean.
7.5.
Should the piston not rise and the oil level is correct, this may indicate a problem with air seeping into the hydraulic valve passage.
Purge any air from the system. See 6.2
7.6.
Confirm that the piston can rise to the highest position.
7.7.
Before each use check for broken, cracked, bent, or loose parts; any visible damage to welds, piston, pump, saddle, air connector,
levers, frame and all parts including nuts, bolts, pins and other fasteners. If any suspect item is found, remove jack from service and
take necessary action to fix the problem.
DO nOT
use the jack if believed to have been subjected to abnormal load or shock. Inspect and take appropriate action.
7.8.
After a year of extensive use, the oil should be replaced in order to extend the life of the jack. To drain the oil, remove
the filler plug and valve. Make sure that no dirt is allowed to enter the hydraulic system. See 7.3. for refilling instructions.
7.9.
Periodically check the pump piston and piston rod for signs of corrosion. Clean exposed areas with a clean oiled cloth.
fig.
5
fig.
6
YAJ301,YAJ10-25LR,YAJ15-30LE Issue 1-29/04/13
YAJ20-60LR, YAJ10-40LELR
© Jack Sealey Limited
6. OPERaTIOn
6.1. Preparation
6.1.1. Check that the air supply meets the requirements
set out in section 5.
6.1.2. Connect the air supply to the connector (fig.4.B).
6.1.3. Set the handle to the required angle using the handle
release lever shown in fig.4.A. Pull the lever upwards
towards the main handle. Move the handle to the
required position and release the lever to lock
it into position.
6.2.
Purging the System
Before using the jack, purge the hydraulic circuit in order to eliminate any possible air that may have entered the system
during transit.
6.2.1. Push the control lever (fig.3) to the ‘down’ (fig.3.A) position and hold it there for several seconds. Release the lever to the centre ‘hold’
position.
6.2.2. Now push the lever to the ‘up’ position (fig.3.B) and hold it there until the jack is fully extended. Push the lever to the ‘down’ (fig.3.A)
position and watch the jack as it retracts. The lowering movement should be smooth and without irregular stops.
6.2.3. Repeat the raising and lowering cycle until the movement is smooth. Once this has been achieved this indicates that all
air has been expelled.
fig.3