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martinf

R model brake troubles

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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

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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.

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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.   

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