Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

Resetting proportioning valve.

Discussion in 'The Garage' started by Codeman96, Sep 4, 2006.

  1. Codeman96

    Codeman96 1/2 ton status

    Joined:
    Jan 22, 2003
    Posts:
    184
    Likes Received:
    0
    Location:
    Southeast Mo.
    Can someone please tell me how to reset the prop valve on my '92 Suburban without the factory tool?
     
  2. dremu

    dremu Officious Thread Derailer Premium Member

    Joined:
    Feb 27, 2000
    Posts:
    15,963
    Likes Received:
    454
    Location:
    East of San Francisco
    If the newfangled trucks are like the old ones -- and that's a big if -- you can just push the rubber nipple button thing in with your thumb.

    The factory tool for the older trucks can be made from flat stock, either welded or bent at the end, and a slot cut via some method (angle grinder). See attached.

    All it does is HOLD the button in, i.e. center the pressure-difference-sensor, whilst you're bleeding the brakes.

    Again, this may or may not apply to your truck.

    http://www.slosh.com/dremu/brake-tool-for-combo-valve-1.JPG

    http://www.slosh.com/dremu/brake-tool-for-combo-valve-2.JPG

    -- A
     
    Last edited: Sep 20, 2006
  3. diesel4me

    diesel4me 1 ton status Premium Member

    Joined:
    Jul 24, 2003
    Posts:
    17,561
    Likes Received:
    942
    Location:
    Massachussetts
    hammer!..

    I used a claw hammer head to hold the button in!..be aware on some proportioning valves,you have to PULL OUT the button!..I've only had to mess with that button once on one truck I had--a few weeks later after bleeding the brakes,I lost the pedal again!..the proportioning valve was leaking bad!..so I try to avoid disturbing them...using my home brewed vacuum bleeder,I havent had to touch one in years..:crazy:
     
  4. BadBob

    BadBob 1/2 ton status

    Joined:
    Aug 14, 2005
    Posts:
    158
    Likes Received:
    0
    Location:
    Lyndon, KS
    I've had fairly good luck with just cracking one front and one rear bleeder and then giving the brake pedal a good stomp.
     

Share This Page