Bus Conversions dot Com Bulletin Board
April 16, 2014, 12:01:25 PM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: This BB is intended for the sole purpose of sharing conversion and bus related information among visitors to our web site. These rules must be followed in order for us to continue this free exchange of info. No bad mouthing of any business or individual is permitted. Absolutely no items for sale are to be posted, except in the Spare Tire board. Interested in placing a classified or web ad, please contact our advertising dept. at 714-903-1784 or e-mail to: info@busconversions.com.

   Home   Help Forum Rules Search Calendar Login Register BCM Home Page Contact BCM  
Pages: [1]   Go Down
  Print  
Author Topic: brake valve and light switch PD4106  (Read 262 times)
agetme
Newbie
*
Offline Offline

Posts: 16




Ignore
« on: September 25, 2013, 02:55:04 PM »

Does anyone know the part # of the brake air valve in front of the rear axle that turns on brake light when you step on brake? It allows power to go to brake lights thru the brake light switch near the valve.

Need the valve.  Could use a brake light switch also for future in case. Also anyone know where I can get one?

When I step on brake the brake SW does not complete the circuit. When I jump the switch the brake lights do come on. Also, no pressure release from the bottom of the valve when I let off the brake thru the black rubber relief on the bottom of the valve. So I assume it is not functioning correctly.

PD4106 1964 GMC
Logged

Tom Hamilton
wildbob24
Hero Member
*****
Online Online

Posts: 515





Ignore
« Reply #1 on: September 25, 2013, 08:00:09 PM »

Tom,

That valve is the relay valve for the rear brake chambers. The original part number is 2390014. It was a Bendix R5, which, afaik, is no longer available. That number has been superseded with 2097615, which is a Bendix R12. Chances are your relay valve has been replaced at least once and may already have an R12 installed.  If this valve is not functioning correctly, then your rear brakes are not working, obviously not a good thing.

The relay valve does not turn on the brake light switch. The switch is tee'd into the service port of the relay valve and sees the signal pressure from the brake application valve when you step on the brake treadle. Most likely your switch is bad. That original GM part # is 2243944.

Call Luke at US Coach. He'll be able to fix you up with good advice and the part(s) you need. 856-767-4848.

Bob
Logged

P8M4905A-1308, 8V71 w/V730
Custom Coach Conversion
Duluth, GA
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!