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Discussion in 'The Garage' started by Codeman96, Sep 4, 2006.
Can someone please tell me how to reset the prop valve on my '92 Suburban without the factory tool?
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.
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've had fairly good luck with just cracking one front and one rear bleeder and then giving the brake pedal a good stomp.
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