Codeman96
1/2 ton status
Can someone please tell me how to reset the prop valve on my '92 Suburban without the factory tool?
CK5
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Resetting proportioning valve.
- Thread starter Codeman96
- Start date
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.Codeman96 said:
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:
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..
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..
BadBob
1/2 ton status
I've had fairly good luck with just cracking one front and one rear bleeder and then giving the brake pedal a good stomp.
