Sign in to follow this  
martinf

R model brake troubles

Recommended Posts

Hey all,

woke up my mid seventies R six wheel logging truck after 6 years of sitting. 

Builds up pressure just fine, but when I press the brakes, a huge gush of air comes out the side of the treadle valve. I've not taken this valve out before, but it's coming out on the passenger side on a port of some King. Is that a exhaust vent?

anyways, when I do that, the air cans nd brakes operate, but I lose way too much air.

also, for reasons I haven't figured out, but I'm thinking are related, there's no air coming too my spring cans and when I operate the brake  hand control unit, air dumps out of the treadle at that same port.

ideas and suggestions sure appreciated!

martin

Share this post


Link to post
Share on other sites

Exhaust is out the bottom.

Because of age and years sitting, one of the o rings in the treadle could be be bad.  Could be a broken fitting or cracked line at the treadle body.

  • Like 1

Share this post


Link to post
Share on other sites
13 hours ago, j hancock said:

Exhaust is out the bottom.

Because of age and years sitting, one of the o rings in the treadle could be be bad.  Could be a broken fitting or cracked line at the treadle body.

What he said.    I'm thinking broken fitting.   Look for a loose airline hanging nearby.   

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this