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Original Language Version

 7.  TROUBLesHOOTING

pROBLeM

pOssIBLe CAUse

ReMeDy

Vehicle does not lift but pump is OK

1. Oil exhausted.

1. Supply oil.

2. Air in hydraulic system.

2. Purge the hydraulic circuit..

3. Defective suction or delivery valves.

3. Clean clogged valve.

4. Defective packing or 0-ring.

4. Replace.

5. Poor oil quality.

5. Replace oil.

Air pump does not operate.

1. Insufficient compressor power.

1. Use a compressor larger than 3HP.

2. Pump oil used up.

2. Dismantle the air pump and coat it with soft quality non   

acid grease or lubricate air valve.

Vehicle stops before lift is completed.

1. Hydraulic oil is insufficient.

1. Supply oil.

Jack lowers or does not hold vehicle 

in the raised position.

1. Defective suction, delivery, release or     

safety valve.

1. Clean and adjust valve.

2. Defective piston packing.

2. Replace packing.

Lifting is too slow

1. Air leakage due to worn servo-valve.

1. Replace servo-valve.

Pump continues to operate when the 

air valve is closed.

1. Air valve will not close.

1. Replace valve.

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.

Decommissioning 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.

6.4.  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 5.3. 

6.5.  Confirm that the piston rises to the highest position.   

6.6.  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.  

6.7.  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    

 

(fig.6). Make sure that no dirt is allowed to enter the hydraulic system’s oil. See section 6.3. for refilling instructions.

6.9.  Check the piston rod periodically for signs of corrosion. Clean exposed areas with a clean oiled cloth.

© Jack Sealey Limited

Parts support is available for this product. Please log on to  

www.sealey.co.uk, email [email protected] or telephone 01284 757500

eNVIRONMeNT 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. When the product becomes completely 
unserviceable and requires disposal, drain any fluids (if applicable) into approved containers and dispose of the product and fluids 
according to local regulations.

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 is required for any claim.

sealey Group, Kempson Way, suffolk Business park, Bury st edmunds, suffolk. Ip32 7AR

 01284 757500 

 01284 703534 

 [email protected] 

 www.sealey.co.uk

YAJ15-30F_V2     Issue: 1 - 11/09/18

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