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raycow · 11-07-2010, 10:51 AM

Any drum brake needs a residual pressure valve to prevent a low pedal condition caused by the shoes retracting fully. A proportioning valve is not a replacement for a RPV. It is possible to combine the two functions in one housing, but then it is called a combination valve. Long story short, unless you can positively verify that you have a combination valve, leave the RPV in the MC.

Ray

11-07-2010, 10:51 AM	#2
raycow Registered User Join Date: Mar 2003 Location: San Francisco, CA USA Posts: 2,454	Re: Valve in new master cylinder Any drum brake needs a residual pressure valve to prevent a low pedal condition caused by the shoes retracting fully. A proportioning valve is not a replacement for a RPV. It is possible to combine the two functions in one housing, but then it is called a combination valve. Long story short, unless you can positively verify that you have a combination valve, leave the RPV in the MC. Ray __________________ Live more responsibly. Eat lower on the food chain. Eat vegetarians.