Discussion:
C500-55 Transmission Tank Petcock Valve

Gents,
We have a well running Clark C500-55 Propane, except for a transmission leak under the transmission fluid tank.
Question: There is a petcock valve on the top side of the tank with a "RUN" and "OFF" position. Any ideas on the operation and setting of the petcock valve? We cannot find this valve in any documentation.
Thanks
Chuck Bridgman
  • Posted 13 Jul 2024 23:58
  • By CJBridgman
  • joined 13 Jul'24 - 3 messages
  • Ohio, United States
CJBridgman
Showing items 1 - 4 of 4 results.
Please provide full model and serial
  • Posted 29 Aug 2024 07:02
  • By tom_p
  • joined 21 Feb'11 - 198 messages
  • Alberta, Canada
I am thinking that will be the hyd filter
  • Posted 16 Jul 2024 11:40
  • By John_Bradley
  • joined 10 Aug'22 - 266 messages
  • Texas, United States
Jb69
John, Thank you for the reply.
Yes makes since that its an old fuel tank someone filled with ATF. Will follow advice.
What is the big spin off filter on top left side for?
  • Posted 16 Jul 2024 06:14
  • By CJBridgman
  • joined 13 Jul'24 - 3 messages
  • Ohio, United States
CJBridgman
Chuck , I retired from a Clark dealer after 32 years and been in forklift repair for over 44
Years I have never seen a trans tank on a c500
The fluid reservoir is in bottom of transmission
Your leak is possibly a screen seal or a bell housing. the petcock you are referring to is probably the old fuel tank the fuel tank and hyd tanks were built in to frame. sometimes
when they added or converted to LP they would put oil in old fuel tank to discourage rusting
I would clean off as much residue as possible and then check to see where the leak is

Much luck
  • Posted 16 Jul 2024 05:59
  • By John_Bradley
  • joined 10 Aug'22 - 266 messages
  • Texas, United States
Jb69

Post your Reply

Forkliftaction accepts no responsibility for forum content and requires forum participants to adhere to our rules of conduct. Click here for more information.

If you are having trouble using the Discussion Forums, please contact us for help.

Global Industry News
edition #1257 - 20 November 2025
In this week’s Forkliftaction News , Toyota Industries Corporation confirms it has settled a class-action lawsuit in the US which centred around its 2023 emissions cheating scandal. Find out how much the class-action cost it... Continue reading
Movers & Shakers
Steven Ballerini Steven Ballerini
Chief executive officer, Australian Supply Chain & Logistics Association (ASCLA)
Engineering policy lead, Logistics UK
Regional manager - Eastern Canada, Associated Equipment Distributors
Vice president - IT & EP OEM parts, Big Joe Forklifts
Global Industry News
edition #1257 - 20 November 2025
In this week’s Forkliftaction News , Toyota Industries Corporation confirms it has settled a class-action lawsuit in the US which centred around its 2023 emissions cheating scandal. Find out how much the class-action cost it... Continue reading
HD Hyundai XiteSolutions receives order for 230 forklifts Caracas, Venezuela, Bolivarian Republic Of
Fact of the week
In 1898, author Morgan Robertson wrote a novel called 'Futility', which described an "unsinkable" ship named the Titan that sank after hitting an iceberg. Fourteen years later, the Titanic sank in a strikingly similar fashion.
Upcoming industry events …
December 9-11, 2025 - Aktau, Kazakhstan
May 20-21, 2026 - Nashville, United States
June 23–25, 2026 - Cairo, Egypt
Fact of the week
In 1898, author Morgan Robertson wrote a novel called 'Futility', which described an "unsinkable" ship named the Titan that sank after hitting an iceberg. Fourteen years later, the Titanic sank in a strikingly similar fashion.