parking brake light and proportional valve

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spedigo

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Location
texas
First Name
Sam
Truck Year
1979
Truck Model
big10
Engine Size
350
brake light came on and stayed that way for a couple of days so I followed the advice on the other threads.

I bled the front and rear passenger brakes to see if that made a difference. It did not.

Once my son showed up and i could bleed it 2-man style I Went back and bled everything again from rear to front and that didn’t make a difference either.

The only thing I am noticing that I don’t believe I noticed before is that it seems like it’s pulling slightly to the front left when stopping, currently.

That’s all I got. Any other suggestions on how I should attack it?
 
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spedigo

Member
Joined
Dec 6, 2023
Posts
34
Reaction score
16
Location
texas
First Name
Sam
Truck Year
1979
Truck Model
big10
Engine Size
350
OK, follow up,

So I pulled out the switch and I stuck a narrow screwdriver down and moved the shuttle valve back to center. put the switch back in and so far everything seems to be running right. Light went out and hopefully will stay out. going to buy a centering tool to have on hand next time I have to bleed.
 

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