Jump to content

puff limiter, again...


biffidun
 Share

Recommended Posts

Just a basic question. Up here in the great white north (Canada). The feds made everyone raise their pressures in the brakes systems a couple of years ago. Long story short, my "new to me" 1976 DM685S smokes a bit much, well, alot. I yanked the puff limiter valve and cleaned it, but not much change. Here's my question, if the system pressure has been raised, wouldn't the puff limiter be out of spec?

I tried adding two washers to the top of the spring inside the valve, thinking that more pressure would be required to overcome the spring - delaying full rod stroke in the pump. Is my thinking correct or is it reversed?

Link to comment
Share on other sites

Just a basic question. Up here in the great white north (Canada). The feds made everyone raise their pressures in the brakes systems a couple of years ago. Long story short, my "new to me" 1976 DM685S smokes a bit much, well, alot. I yanked the puff limiter valve and cleaned it, but not much change. Here's my question, if the system pressure has been raised, wouldn't the puff limiter be out of spec?

I tried adding two washers to the top of the spring inside the valve, thinking that more pressure would be required to overcome the spring - delaying full rod stroke in the pump. Is my thinking correct or is it reversed?

The air pressure in the tanks being some more than it was will not change the pressure going to the puff limit cyl on the pump.

glenn akers

Link to comment
Share on other sites

  • 2 weeks later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...