Installing proportioning valve - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cole · 10-22-2003, 11:14 PM

I did the disk swap to my 68 1/2 ton step. I was told that it didn't need a proportioning valve. I believed it until I needed to stop real fast and the backs locked up and I slid sideways. I went home and ordered the stock valve for the 71/72. I fabricated a bracket and found out that the line sizes are different or the fittings are different. After many hours with the tubing bender, new lines and a flaring tool I thought I was ready to role. I can't seem to get the rears to bleed. Is there some magic that somone out there is aware of? I Could use the advise, my wife is getting tired of pumping the brakes.

Thanks,

Cole

10-22-2003, 11:14 PM	#1
cole Registered User Join Date: Aug 2002 Location: AZ Posts: 17	Installing proportioning valve I did the disk swap to my 68 1/2 ton step. I was told that it didn't need a proportioning valve. I believed it until I needed to stop real fast and the backs locked up and I slid sideways. I went home and ordered the stock valve for the 71/72. I fabricated a bracket and found out that the line sizes are different or the fittings are different. After many hours with the tubing bender, new lines and a flaring tool I thought I was ready to role. I can't seem to get the rears to bleed. Is there some magic that somone out there is aware of? I Could use the advise, my wife is getting tired of pumping the brakes. Thanks, Cole __________________ Unemployment would have been a wonderful experience, had it not been for the lack of money.



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