Proportioning valve ???? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

muckyp · 11-15-2010, 12:55 AM

Is there a way test a brake system proportioning valve before it is installed? The brakes are not hooked up yet, but the PO thought the proportioning valve that is on the truck is bad.

Thanks

dwcsr · 11-15-2010, 01:15 AM

take an ohm meter and connect it to the switch terminal and the body of the valve. apply air pressure to the rear port and watch the meter. It should zero out. do the same for the front port it should zero out again. You can center it with a pick with the switch out.

muckyp · 11-19-2010, 01:04 AM

thanks, I will try that

11-15-2010, 12:55 AM	#1
muckyp Registered User Join Date: Mar 2001 Location: Forney, Texas Posts: 290	Proportioning valve ???? Is there a way test a brake system proportioning valve before it is installed? The brakes are not hooked up yet, but the PO thought the proportioning valve that is on the truck is bad. Thanks

11-15-2010, 01:15 AM	#2
dwcsr Hollister Road Co. Join Date: Apr 2005 Location: Houston Posts: 6,134	Re: Proportioning valve ???? take an ohm meter and connect it to the switch terminal and the body of the valve. apply air pressure to the rear port and watch the meter. It should zero out. do the same for the front port it should zero out again. You can center it with a pick with the switch out.

11-19-2010, 01:04 AM	#3
muckyp Registered User Join Date: Mar 2001 Location: Forney, Texas Posts: 290	Re: Proportioning valve ???? thanks, I will try that



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.