
5. MAINTENANCE
IMPORTANT: Only fully qualied personnel should attempt maintenance or repair.
Jacks shall be maintained and repaired in accordance with the manufacturer’s
instructions. Such maintenance and repair shall be carried out by qualied
persons. No modications shall be carried out which adversely aect the
compliance of the jack with the standard. Check the state of the markings and that
the markings remain as the initial one.
5.1. When the jack is not in use, the ram should be in its lowest position to minimise
corrosion. Remove the handle to inactivate jack.
5.2. Keep the jack clean and lubricate all moving parts with oil on a regular basis.
5.3. Before each use check for broken, cracked, bent, or loose parts, or any visible
damage to ram, pump, saddle, lifting arm, 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 remedy the problem.
8DO NOT use the jack if believed to have been subjected to abnormal load or
shock load.
5.4. Periodically check the pump piston and the ram for signs of corrosion. Clean exposed areas with a clean oiled cloth.
5.5. After one year the oil should be replaced in order to extend the life of the jack. Use hydraulic jack oil only.
5.6. To check the oil level, fully lower the jack and remove ller plug (g.3). The correct level is the bottom of the screw hole. If oil level is
low, ll as required. Pump jack 5 or 6 times to expel air. Pump jack up to full height and pour o excess oil before retting plug.
8DO NOT touch the safety overload valve (g.3).
NOTE: Use Sealey quality hydraulic jack oil, Model No.s HJO500MLS / HJO5LS to top up or replace the hydraulic uid.
WARNING: DO NOT use brake uid, or any uid other than hydraulic jack oil as this may cause serious damage to the jack and will
invalidate the warranty.
5.7. To drain the oil, remove the ller screw and raise front of jack. Make sure that no dirt is allowed to enter the hydraulic system.
IMPORTANT: NO RESPONSIBILITY IS ACCEPTED FOR INCORRECT USE OF PRODUCT.
Hydraulic products are only repaired by local service agents. We have service/repair agents in all parts of the UK.
8DO 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 contact your local Sealey Stockist.
5.8. DE-COMMISSIONING THE JACK
Should the jack become completely unserviceable and require disposal, draw o the oil into an approved container and dispose of the
jack and the oil according to local regulations.
6. TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE REMEDY
Jack will not lift the
load 1) Overloaded
2) Oil level low
3) Release valve not correctly closed
4) Air in system
5) Piston rod not functioning
6) Packing worn or defective
1) Be sure to use jack with adequate capacity
2) Top up oil level
3) Check and close release valve
4) Open release valve and pump the handle a few times.
Close valve and re-try
5) Clean and replace oil
6) Replace packing
Jack does not lift high
enough
Or feels “spongy”
1) Oil level too high or too low
2) Worn seals
3) Air in system
4) Release valve not closed
1) Fill or remove excess oil
2) Return jack to local service agent
3) Open release valve and pump the handle a few times.
Close valve and re-try
4) Check and close release valve
Jack lifts poorly 1) Pump packing or valves malfunctioning
2) Oil is dirty
3) Air in the system
1) Replace packing and/or clean valves
2) Replace oil
3) Open release valve and pump the handle a few times.
Close valve and re-try
Jack lifts but will not
hold load 1) Release valve partially open
2) Dirt on valve seats
3) Air in system
4) Faulty seals
5) Packing worn or defective
1) Check and close release valve
2) Lower jack, close release valve. Place foot on front wheel
and pull up lifting arm to it’s full height by hand. Open the
release valve to lower arm
3) Open release valve and pump the handle a few times.
Close valve and re-try
4) Replace packing or contact local service agent
5) Replace packing
Jack will not lower
completely 1) Unit requires lubrication
2) Piston rod bent or damaged
3) Jack frame/link system distorted due to
overloading/poor positioning
4) Air in system
5) Release valve partially closed
6) Jack spring damaged or unhooked.
1) Oil all external moving parts
2) Replace rod or contact local service agent
3) Replace damaged parts or contact local service agent
4) Open release valve and pump the handle a few times.
Close valve and re-try
5) Check and fully open release valve
6) Replace spring or contact local service agent
Jack does not lower
at all 1) Release valve closed 1) Check and fully open release valve
OIL FILLER PLUG
SAFETY OVERLOAD VALVE
FIG.3
3001CXP.V1 Issue 2 (H,3,4) 14/09/23
Original Language Version
© Jack Sealey Limited