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73-87 Chevy _ GMC Trucks => Brakes, Frame, Steering & Suspension => Brakes and Braking Systems => Topic started by: 1979C20 on November 29, 2012, 12:49:28 am

Title: Never seen this part before.
Post by: 1979C20 on November 29, 2012, 12:49:28 am

On any vehicle. Its located at the rear axle. Therea a bracket coming off the fram holding the part in the picture. It looks hydraulic, and theres 2 steel lines going into it. The arm goes down and attaches to the dif cover.

 (http://i1230.photobucket.com/albums/ee497/1979c20/2012-11-22132929.jpg)

Title: Re: Never seen this part before.
Post by: bd on November 29, 2012, 01:08:32 am

Height sensing brake proportioning valve...

http://forum.73-87chevytrucks.com/smforum/index.php/topic,12647.msg95763.html#msg95763 (http://forum.73-87chevytrucks.com/smforum/index.php/topic,12647.msg95763.html#msg95763)

http://forum.73-87chevytrucks.com/smforum/index.php/topic,16967.msg133296.html#msg133296 (http://forum.73-87chevytrucks.com/smforum/index.php/topic,16967.msg133296.html#msg133296)

Title: Re: Never seen this part before.
Post by: 1979C20 on November 29, 2012, 01:37:41 am

Thanks bd. Thats pretty interesting. Maybe thats causing my brothers dually to lock up the rears when you barely touch the brakes.