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**kwmech** · 11-13-2023, 02:49 PM

So I upgraded axles and brakes on my 91 Suburban to a full float 14 bolt rear and a Dana 60 front. The front axle got a conversion to 3/4 ton rotors. Still have the 1/2 calipers on it. Have a 3/4 ton master (not installed yet). Issue is a spongy pedal and I'm leaning towards the RWAL dump valve not working quite right. NO bleeder on the valve. I previously had issues on my other Suburban with the same issue. I am considering removing/bypassing the dump valve. Yes everything is adjusted correctly and have bled the system thoroughly. Any thoughts?

11-13-2023, 02:49 PM	#1
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,407	Suburban rwal So I upgraded axles and brakes on my 91 Suburban to a full float 14 bolt rear and a Dana 60 front. The front axle got a conversion to 3/4 ton rotors. Still have the 1/2 calipers on it. Have a 3/4 ton master (not installed yet). Issue is a spongy pedal and I'm leaning towards the RWAL dump valve not working quite right. NO bleeder on the valve. I previously had issues on my other Suburban with the same issue. I am considering removing/bypassing the dump valve. Yes everything is adjusted correctly and have bled the system thoroughly. Any thoughts?