Clark C300-50LP:
Brakes

I replaced master cylinder. Machine works for awhile then won't move found the inching valve engaged. after bleeding pressure off it will move again. the brakes are releasing. Have 1/4" free play on pedal. also replaced springs and seal in inching valve. it moves freely
  • Posted 14 Jun 2014 23:29
  • Discussion started by donj
  • New Hampshire, United States
Showing items 1 - 7 of 7 results.
Ty :)
  • Posted 11 Jul 2014 22:39
  • Reply by bbforks
  • Pennsylvania, United States
bbforks (at) Hotmail (dot) com
Customers love technology- until they have to pay to fix it!
good call bbforks :o)
  • Posted 9 Jul 2014 19:26
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
After all the chasing of this thing I watch them run it for a couple hours. I change the cap to a vented one no more trouble. I guess in the future I will have to make sure its the same as the one I took off.
Thank you
  • Posted 9 Jul 2014 09:14
  • Reply by donj
  • New Hampshire, United States
usually when the brakes lock up like that it is generally caused by a improperly adjusted rod not letting the piston inside the master cylinder return completely. It does not allow the fluid to return back to the resivoir and turns the master cylinder into a pump and it keeps pumping up the system till it locks down.

i need to ask
does this truck have the vertical master cylinders mounted just under the steering column/wheel in the center under the dash? or is it a normal type mounted on the frame under the floor plate area?
If they are the vertical ones under the dash those are a real pain in the keester to get bled out and adjusted properly.
  • Posted 9 Jul 2014 02:41
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
Try removing the master cyl cap & see if all works good then. If so, you could drill a small vent hole in the cap
  • Posted 9 Jul 2014 00:26
  • Reply by bbforks
  • Pennsylvania, United States
bbforks (at) Hotmail (dot) com
Customers love technology- until they have to pay to fix it!
I have a 1/4'' play at rod. the brakes still lock up. I checked all the brake lines and fittings. The only thing that I found was the cover to master cylinder has no vent. It came with the new master cylinder
  • Posted 8 Jul 2014 12:00
  • Reply by donj
  • New Hampshire, United States
Sounds like a issue w/ the master cyl. Perhaps back off the brake rod so you have more free play & give that a shot first
  • Posted 8 Jul 2014 06:39
  • Reply by bbforks
  • Pennsylvania, United States
bbforks (at) Hotmail (dot) com
Customers love technology- until they have to pay to fix it!

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