Clark CGC25:
Lift cylinder problems

Hello. Just bought a 1998 cgc25. After about 2 ft of lifting roughly 2000lbs off the ground, the secondary cylinders start raising up and the main cylinder starts bleeding down. Can someone please tell my if it's the main cylinder or spool valve or any other ideas? Thank you.
  • Posted 6 Oct 2024 13:19
  • Discussion started by John_Phillips
  • Washington, United States
John phillips
Showing items 1 - 10 of 10 results.
Yup, Seen that many times on several makes.
Make sure the Internal snap ring fits tight.
  • Posted 11 Oct 2024 23:43
  • Reply by TailiftTom
  • Colorado, United States
Tom Edwards
Valve is blown out on bottom.
  • Posted 11 Oct 2024 14:40
  • Reply by John_Phillips
  • Washington, United States
John phillips
Also if you are not familiar with seal the lip goes toward fluid
  • Posted 11 Oct 2024 03:39
  • Reply by John_Bradley
  • Texas, United States
Jb69
Yes. Please Replace your Seals while apart.
You will Fix It!!
  • Posted 11 Oct 2024 03:20
  • Reply by TailiftTom
  • Colorado, United States
Tom Edwards
Ok great. I'm changing the small valve with a spring at the bottom of the piston in the middle. Hopefully this is what you are talking about.
  • Posted 11 Oct 2024 03:05
  • Reply by John_Phillips
  • Washington, United States
John phillips
The "Safety" Valve is normally mounted Outside the Cylinder. " Anti Burst Valve."
The "Sequencing or Lowering" Valve are normally mounted at the Bottom side of the Piston on the Center or Free Lift Cylinder. ( Inside) the Cylinder.
  • Posted 11 Oct 2024 03:03
  • Reply by TailiftTom
  • Colorado, United States
Tom Edwards
Are you talking about the safety valve inside piston?
  • Posted 11 Oct 2024 02:59
  • Reply by John_Phillips
  • Washington, United States
John phillips
Agree with sequence valve , or main lift cyl pressure seal damaged
  • Posted 11 Oct 2024 02:43
  • Modified 11 Oct 2024 02:44 by poster
  • Reply by John_Bradley
  • Texas, United States
Jb69
Wel, Normally this points to the "Sequencing" Valve in the Free Lift Cylinder. It is Blocked Open or Broken. You normally have to take the cylinder apart to inspect it.
  • Posted 11 Oct 2024 02:31
  • Reply by TailiftTom
  • Colorado, United States
Tom Edwards
I would say it is the main lift cylinder. Make sure there is no binding of the carriage in the channel. If there is well then that is the problem.
  • Posted 10 Oct 2024 23:54
  • Reply by tommytahoe
  • Ontario, Canada

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