284 hyd.pump

This topic has 3 replies, 4 voices, and was last updated 12 years, 7 months ago by Bert.

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- May 5, 2012 at 7:57 am #30554
  CTOA
  Keymaster
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  My Jinma 284 has blown the hydraulic pump seals and pumped oil to engine
  
  sump. Any suggested causes for a user in downunder land?Tractor is fitted
  
  with a 4 in 1 loader and has done 180 hours
  
  CTOA - Founder
- May 8, 2012 at 8:57 am #34543
  Affordable
  Participant
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  Most of the time it is a bad quick connect coupling on one of the loader hoses
  
  Tommy
  
  Affordable Tractor Sales
  
  “Your Jinma Parts Superstore”
  
  http://www.affordabletractorsalesco.com
- May 8, 2012 at 10:52 am #34546
  RichWaugh
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  That's the most common cause, but anything that deadheads the pump will blow the seal or split the case. Could be a stuck relief valve in the loader control or jamming the TPH lift arms under lift pressure, even. But a faulty quick-connect hose coupling is the cause about 9 out of 10 times. If you have the Chinese QC's, I suggest replacing them with better ones from one of the brand name manufacturers of couplings. Tommy can send them to you, even down under.
- May 8, 2012 at 5:59 pm #34554
  Bert
  Participant
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  It could be what Tommy & Rich have indicated or it could also be with your loader pressure relief valve not being set properly or some debris is jamming the pressure relief valve.
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