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Re: [GMCnet] GMCNet Proportional Valve [message #328567 is a reply to message #328523]

Wed, 24 January 2018 13:17

Russell K.

Messages: 178
Registered: October 2016
Location: Dunedin, Florida

Karma:

Senior Member

Tom,
I recently replaced the proportioning valve on our GMC. The 50/50 mix of acetone and ATF (as recommended to me on this forum) worked very well for me. What I did first was scrub the fittings and the tubing with the 50/50 mix and a toothbrush. I also purchased the vice-grip locking wrench (also recommended here) that grabbed the fittings tighter than the flare nut wrench. After tightening the wrench on the fitting, I would tap it with a small hammer while applying pressure to loosen the fitting. It worked successfully on all the fittings, but I did replace some of the brake lines anyway, since I had previously purchased the stainless steel brake line kit.

valve before cleaning
http://www.gmcmhphotos.com/photos/data/7010/20170102_074927.jpg

after cleaning
http://www.gmcmhphotos.com/photos/data/7010/20171230_092718.jpg

New valve in place
http://www.gmcmhphotos.com/photos/data/7010/New_Proportioning_Valve_Installed1.jpg

1978 Eleganza II, Dunedin, Florida

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[Message index]

		Re: [GMCnet] GMCNet Proportional Valve By: THOMAS R WHITTON on Tue, 23 January 2018 00:14
		Re: [GMCnet] GMCNet Proportional Valve By: Ken Burton on Tue, 23 January 2018 06:21
		Re: [GMCnet] GMCNet Proportional Valve By: lqqkatjon on Tue, 23 January 2018 07:50
		Re: [GMCnet] GMCNet Proportional Valve By: Bullitthead on Tue, 23 January 2018 08:45
		Re: [GMCnet] GMCNet Proportional Valve By: Phantom2 on Tue, 23 January 2018 22:06
		Re: [GMCnet] GMCNet Proportional Valve By: Ken Burton on Wed, 24 January 2018 04:32
		Re: [GMCnet] GMCNet Proportional Valve By: Matt Colie on Wed, 24 January 2018 08:47
		Re: [GMCnet] GMCNet Proportional Valve By: Russell K. on Wed, 24 January 2018 13:17
		Re: [GMCnet] GMCNet Proportional Valve By: THOMAS R WHITTON on Thu, 25 January 2018 13:20
		Re: [GMCnet] GMCNet Proportional Valve By: NextGenGMC on Thu, 25 January 2018 15:05
		Re: [GMCnet] GMCNet Proportional Valve By: Ken Burton on Thu, 25 January 2018 18:56
		Re: [GMCnet] GMCNet Proportional Valve By: Ken Henderson on Thu, 25 January 2018 20:55
		Re: [GMCnet] GMCNet Proportional Valve By: Matt Colie on Fri, 26 January 2018 08:21
		Re: [GMCnet] GMCNet Proportional Valve By: hdforge on Fri, 26 January 2018 08:32

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