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Mast dropping

We have resealed all the lift cylinders but the mast is still dropping! It has electronic hoist controls
  • Posted 10 Jul 2014 04:10
  • By garylee_p
  • joined 10 Jul'14 - 22 messages
  • Shropshire, United Kingdom
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Showing items 1 - 3 of 3 results.
awesome!
glad you found it
  • Posted 11 Jul 2014 06:57
  • Modified 11 Jul 2014 06:57 by poster
  • By swoop223
  • joined 23 Mar'12 - 3,692 messages
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
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Found the problem........ It was the lowering poppet valve!!
  • Posted 10 Jul 2014 22:22
  • By garylee_p
  • joined 10 Jul'14 - 22 messages
  • Shropshire, United Kingdom
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bad check valve or relief valve in the main control valve?

on these electronic controlled valves they usually have a lift solenoid and also a dump valve solenoid, could be one of those not seating closed completely allowing the leak down.
  • Posted 10 Jul 2014 20:08
  • By swoop223
  • joined 23 Mar'12 - 3,692 messages
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
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HANGZHOU, Zhejiang, China
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Fact of the week
Brussels Airport in Belgium, Europe is the world's largest sales point for chocolate, with over 800 tonnes of chocolate sold annually. This averages out to about 1.5 kilograms sold every minute.