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Cat TH83 Telehandler

Can anyone advise what oil should be used in the main hydraulic system on a Cat TH83 telehandler please. having some intermittent problems where the boom will lift up but wont lower unless left alone for a few minutes, will then lower! was suggested incorrect grade oil may cause pilot pressures to be incorrect. Help!!!!
  • Posted 3 Jul 2012 01:52
  • By steve_h
  • joined 9 Dec'08 - 53 messages
  • West Midlands, United Kingdom
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Showing items 1 - 1 of 1 results.
We usually use the HM46 or HM68 in normal conditions and works good.If that problem is only lowering the boom,thats due to a malfunction of the security valve located in the hidraulic cylinder.
When you lift up,the circuit is free,but when you try to lower,you need a "counter-pressure" in the valve to open the lower the circuit.
Anyway,if you doubt about the oil grade and condition,change it.
Best regards
R.Feitor
  • Posted 3 Jul 2012 03:42
  • By feitor
  • joined 6 Jan'11 - 161 messages
  • Leiria, Portugal
my email: rc.feitor@hotmail.com
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