Sealey Quality MACHINERY YAJ30H User manual

INSTRUCTIONS FOR :
AIR OPERATED JACK 30tonne -
SINGLE STAGE/HIGH LIFT
MODEL No: YAJ30H
IMPORTANT: READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS AND CAUTIONS.
USE THIS JACK CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE
DAMAGE AND/OR PERSONAL INJURY, AND WILL INVALIDATE THE WARRANTY. RETAIN THESE INSTRUCTIONS FOR FUTURE USE.
Thank you for purchasing a Sealey jack. Manufactured to a high standard this product will, if used according to these instructions and properly
maintained, give you years of trouble free performance.
1. SAFETY INSTRUCTIONS
2. SPECIFICATION
 Disconnect jack from air supply before changing parts, servicing or performing any maintenance.
WARNING! Ensure correct air pressure is maintained and not exceeded. Recommended pressure: 116-174psi Required air flow: 11.5cfm
Keep air hose away from heat, oil and sharp edges. Check air hose for wear before each use, and ensure that all connections are secure.
Ensure jack is kept clean and in good working order. Repair or replace damaged parts immediately
Use recommended parts only. Incorrect parts may be dangerous and will invalidate the warranty.
Use a qualified person to lubricate and maintain the jack.
DO NOT use brake fluid to top up system. Use Sealey hydraulic oil only.
Locate jack in a suitable, well lit work area. Keep area clean and tidy and free from unrelated materials.
Use jack on level & solid ground, preferably concrete. Avoid tarmacadam since jack may sink in.
Place chocks under wheels of vehicle.
Ensure the vehicle handbrake is engaged (or in “PARK” mode), and switch the engine off.
Ensure minimum distance of 0.5m between vehicle as it tilts & static objects such as doors, walls, etc.
Ensure all non essential persons keep a safe distance and that there are no passengers in the vehicle to be jacked up.
Place jack under vehicle manufacturer’s recommended jacking points (see vehicle handbook).
Check that the jacking point is stable and centred on the jack saddle and is free from grease or oil.
 DANGER: Use jack for lifting only, NOT for supporting the raised load. Use correctly rated axle stands under vehicle before proceeding
with task.
 DO NOT apply your body weight to the handle during jacking. The handle is only for moving the jack to and from the lifting location.
 DO NOT operate the jack if parts are missing or damaged.
 DO NOT exceed the rated capacity of the jack.
 DO NOT allow the vehicle to move during lifting.
 DO NOT jack a vehicle which may result in the spillage of fuel, battery acid, or dangerous substances.
 DO NOT work under the vehicle until axle stands have been positioned correctly.
DO NOT use the jack for purposes other that those for which it is designed.
 DO NOT adjust the safety overload valve.
 DO NOT snatch the hose from the air supply, and DO NOT direct air from the air hose at yourself or others.
 Ensure there are no persons or obstructions beneath the vehicle before lowering.
When not in use disconnect jack from the air supply, and store in the lowered position in a safe, dry, childproof area.
 WARNING! Turn off air supply and de-pressurise the control nozzle before removing the pump unit from any installation or mobile system.
Failure to comply with this instruction may damage the unit and will invalidate your warranty.
Original Language Version
3. INTRODUCTION
Ideal for workshop or roadside use, this jack takes the effort out of lifting heavy plant, tractors and commercial vehicles. For extra safety,
features a dead man’s handle which also aids controlled lowering speed. All models supplied with extensions that close the gap between the
saddle of the jack and the jacking point.
© Jack Sealey Limited
Model No: ......................................................YAJ30H
Maximum Capacity: ............................................... 30tonne
Minimum Height:...................................................360mm
Maximum Height (inc. Extensions) .....................................750mm
Stage 1 (mm/tonne): ................................................ 627/30
Piston Stroke: .....................................................267mm
Extensions: ..................................................... 45/75mm
Chassis Length: ...................................................842mm
Length inc. Handle:................................................2222mm
Width without Wheels: ..............................................195mm
Overall Width: .....................................................295mm
Air consumption: ...................................................11.5cfm
Working Pressure: ..............................................116-174psi
Weight: ...........................................................126kg
YAJ30H Issue:1 - 04/09/13

4. ASSEMBLY
4.1. Attaching the Handle
4.1.1. Remove a circlip from either side of the large pin (fig.1A).
4.1.2. Slide out the pin and place the handle into the opening. Slide
the pin back through the jack, lining up the handle and through
the other side. Secure with circlips.
4.2. Air Hoses
4.2.1. Screw in the two air hoses from the handle into the jack.
4.2.2. The hose marked orange must be screwed into the left-hand
side. The hose marked black or clear into the right-hand side (fig.1).
4.2.3. Ensure the hoses are tight and do not obstruct the movement
of the handle.
fig.1
5. AIR SUPPLY
5.1. Ensure that the jack pneumatic switch is in the "off" position before connecting to the air supply.
5.2. You will require an air pressure of between 116psi and 174psi and an air flow of 11.5cfm to get the best
performance from this jack.
5.3. WARNING! Ensure the air supply does not exceed the stated maximum pressure while operating the jack.
Too high an air pressure and unclean air will shorten the products life due to excessive wear, and may be dangerous causing possible
damage and personal injury.
5.4. Drain the air tank daily. Water in the air line will damage the jack.
5.5. Clean the air inlet filter screen weekly.
5.6. Keep the air hose between the compressor and the air jack as short as possible, and install an air filter and oiler (fig.2).
5.7. 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.
5.8. Keep hose away from heat, oil and sharp edges. Check hoses for wear, and make certain that all connections are secure.
fig.2
© Jack Sealey Limited Original Language Version YAJ30H Issue:1 - 04/09/13

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.
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.
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). 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.
© 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.
g.3
fig.4
g. 5
YAJ30H Issue:1 - 04/09/13

NOTE: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice.
IMPORTANT: No liability is accepted for incorrect use of this product.
WARRANTY: Guarantee is 12 months from purchase date, proof of which will be required for any claim.
INFORMATION: For a copy of our latest catalogue and promotions call us on 01284 757525 and leave your full name and address, including postcode.
01284 757500
01284 703534
[e-mail]
Sole UK Distributor, Sealey Group,
Kempson Way, Suffolk Business Park,
Bury St. Edmunds, Suffolk,
IP32 7AR
www.sealey.co.uk
Web
email
Original Language Version
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.
Parts support is available for this product. To obtain a parts listing and/or diagram, please log on to www.sealey.co.uk,
email [e-mail] or phone [phone].
© Jack Sealey Limited
Environmental Protection.
Recycle unwanted materials instead of disposing of them as waste. All tools, accessories and packaging should be sorted, taken
to a recycling centre and disposed of in a manner which is compatible with the environment.
8. TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE REMEDY
Jack does not lift but pump is working. 1. Oil exhausted.
2. Air in hydraulic system.
3. Defective suction or delivery valves.
4. Defective packing or O-ring.
5. Poor quality oil.
1. Supply oil.
2. Drain air by opening cap plug of suction
and delivery valves.
3. Clean clogged valve.
4. Replace.
5. Replace oil.
Air pump does not operate. 1. Insufcient compressor power.
2. Pump oil used up.
1. Use a larger compressor.
2. Find leak and rectify, rell with oil.
Rebuild and lubricate air valve.
Jack stops before end of travel. 1. Hydraulic oil is insufcient. 1. Replenish oil.
Jack lowers or does not hold in the raised
position.
1. Defective suction delivery, release or
safety valve.
2. Defective piston packing.
1. Clean and adjust valve.
2. Replace packing.
Lifting is slow. 1. Air leakage due to worn servo-valve. 1. Replace servo-valve.
Pump continues to operate when the air valves
are closed
1. Air valve will not close. 1. Replace Valve.
YAJ30H Issue:1 - 04/09/13