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Sealey YAJ20B.V2 Instructions page 2

Heavy duty air jack

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3.7.
Line pressure should be increased to compensate for unusually long air hoses (over 8 metres). The minimum hose diameter should be
3/8"
I.D. and fittings must have the same inside dimensions.
3.8.
Keep hose away from heat, oil and sharp edges. Check hoses for wear, and make certain that all connections are secure.
4.
AssEMBlY
WARNING! Ensure the jack is not connected to the air supply before performing the following.
Note: Numbers shown in brackets refer to item numbers on the parts diagram.
4.1.
Loosen the bolt (5-12) and insert the handle assembly (5-0).
4.2. Rotate the knob (5-2) to locate the connecting rod (5-3) into the rod (5-14) as shown in fig.2.
4.3.
Secure the handle assembly by tightening the bolt (5-12).
4.4.
Hook the spring (10-14) onto the bracket on the side of the handle.
5. oPERATING INsTRUCTIoNs
Note: Numbers shown in brackets refer to item numbers on the parts diagram.
5.1.
Preparation before use.
5.1.1. You will require an air pressure of at least100PSI, (max 140PSI) and an air flow of 9.5cfm to operate jack.
5.1.2. Connect the air supply hose .
5.2.
Eliminate any air in the system.
5.2.1. Before using the jack, purge the hydraulic circuit in order to eliminate any possible air that may have entered the system during transit.
5.2.2. Remove the four screws (6-7) and lift off the upper cover (6-6).
5.2.3. Loosen the bolt (3-4) half a turn.
5.2.4. Close the release valve by turning the knob (5-2) clockwise.
5.2.5. Operate the air valve (10-0) and repeatedly tighten and loosen the bolt (3-4) until the piston starts to rise.
5.2.6. Fully tighten the bolt and ensure that the piston can rise to its highest position.
5.2.7. When complete, open the release valve by turning the knob (5-2) anti-clockwise and lower the piston to its lowest position.
5.2.8. Refit the upper cover (6-6) and secure using the four screws (6-7).
5.3.
Using the jack.
WARNING! ensure you have read and understood the safety instructions in chapter 1 before commencing work.
5.3.1. Lift the lock lever (5-6), position the handle as required and release the lock lever.
5.3.2. Position the Jack under the vehicle manufacturer's recommended jacking point (see vehicle hand book).
5.3.3. To raise the jack up, remove the air valve (10-0) from the handle and press the lever (10-8).
5.3.4. When the vehicle has reached the desired height release the lever (10-8) which will stop further air flow and hold the jack at the height
to which it has been raised.
5.3.5. Place axle stands correctly in position and ensure chapter 1 safety instructions are strictly applied before performing any task.
5.4.
lowering the jack.
5.4.1. Ensure there are no persons or obstruction beneath the vehicle before lowering, and remove any axle stands.
5.4.2. To lower the jack, slowly turn the knob (5-2) anti-clockwise and the jack will lower in a controlled manner.
5.4.3. 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 (2-1) in the lowest position to prevent weakening the return springs (2-21).
6. 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.
6.1.
When the jack is not in use, the piston rod must be in the lowest position to minimise corrosion.
6.2.
Keep the Jack clean and lubricate all moving parts on a regular basis.
6.3.
To check oil level, fully lower Jack. Remove the bolt (3-4). The correct oil level should be up to the entrance of the oil filler opening.
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!
WARNING! wear safety goggles.
6.4.
Grit or gum deposits in the air pump may also reduce performance. Remove the filter (10-22) and clean it. Allow to dry before use.
6.5.
Should the piston not rise and the oil level and operation is correct, this may indicate a problem with air seeping into the hydraulic valve
passage. Purge any air from the system, see paragraph 5.2.
6.6.
Confirm that the piston can rise to the highest position.
6.7.
If the air system does not have an oiler, lubricate the air pump once or twice a month with a few drops of Sealey air tool oil dripped into
the air inlet to prolong air pump life.
6.8.
After a year of extensive use, the oil should be replaced in order to extend the life of your equipment. To drain the oil, remove the bolt
(3-4). Make sure that no dirt is allowed to enter the hydraulic system's oil. See 6.3. for refilling instructions.
6.9.
Periodically check the piston rod for signs of corrosion. Clean exposed areas with a clean oiled cloth.
ImpoRtANt: No RESpoNSIBILItY IS ACCEptED FoR INCoRRECt USE oF tHE mACHINE.
Air / Hydraulic products are only repaired by local service agents. We have service/repair agents in all parts of the UK.
Do Not return jacks to us. Please telephone us on 01284 757500 to obtain the address and phone number of your local agent. If Jack is
under guarantee please contact your dealer.
De-commissioning the Jack
Should the Jack become completely unserviceable and require disposal, draw off the oil into an approved container and dispose of the jack
and the oil according to local regulations.
Original Language Version
fig.2.
YAJ20B.V2
Issue No.2 - 29/07/10

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