4106 brake relay valve

fortyniner · February 18, 2022, 04:07:14 PM

Can someone point me to the modern replacement for the rear brake relay valve for 4106. It has single circuit brakes.

I was adjusting slack and my helper did a heavy apply and both rear stayed applied. Fronts were retracted but not rears. Cracking a chamber line its still got pressure. Eventually it drains off and chambers retract.

This valve has three mounting holes.

buswarrior · February 18, 2022, 06:39:34 PM

Call Luke at US Coach and it will be on the way with your credit card.

Good catch, finding that lazy relay valve!!!

Happy coaching!
Buswarrior

Boomer · February 19, 2022, 08:26:24 PM

DD-3's not releasing? Try a couple more applications.

richard5933 · February 20, 2022, 04:29:02 AM

Quote from: Boomer on February 19, 2022, 08:26:24 PM
DD-3's not releasing? Try a couple more applications.

Didn't think that the 4106 had DD3 brakes. Have these been changed?

RJ · February 23, 2022, 02:22:47 AM

Quote from: richard5933 on February 20, 2022, 04:29:02 AM
Didn't think that the 4106 had DD3 brakes. Have these been changed?

Richard -

DD3 brakes were an option on late production 4106s.

Fortyniner -

Luke's number, if you don't have it already, is 1-888-262-2434

FWIW & HTH. . .

RJ

chessie4905 · February 23, 2022, 07:16:25 AM

I guess first, how many hoses connected to each brake chamber? Two or three? Can't see from here.

buswarrior · February 23, 2022, 11:22:16 AM

How did this stray onto DD3?

OP has identified a lazy releasing relay valve, and said it has 3 mounting holes...

Winter fever is setting in...

Happy coaching!
Buswarrior

chessie4905 · February 23, 2022, 02:33:12 PM

yes they do and both type chambers use same relay valves, possibly different model. mine uses r6