Thanks to those who have responded to my question on the Brake switch. Since I did take the entire proportional valve apart and did a restore on it, which included new fluids, I don't image it's in the valve. However, like anything else when you do a restoration, something might have been done improperly. Mike's and John's suggestions, particularly of disconnecting the wire from the switch is something I have not tried and looking thru the manual might also help. I do have shop manual for the 1968 Mustang. I assume they were all the same. John: You mentioned that some Ford mechanics just disconnect the wire and stowe it behind the bundle. Is this a safe idea and what exactly is the function of the Brake switch if it can just be disconnected and not used? Anyway, thanks for the suggestions and if anyone else has something I might try, I'd appreciate it. Peter >I >>> >>> >>> >>> >>> >>>-- >>>No virus found in this incoming message. >>>Checked by AVG Anti-Virus. >>>Version: 7.0.308 / Virus Database: 266.9.6 - Release Date: 4/11/05 >> >>Mike Greene >>TENA Website Curator >>Trideum Corporation >>256.704.6113 >> >> >> > >Calvin >http://www.highrpm.net
On Tue, 12 Apr 2005, Peter Simmel wrote: > Thanks to those who have responded to my question on the Brake switch. Since I > did take the entire proportional valve apart and did a restore on it, which > included new fluids, I don't image it's in the valve. However, like anything > else when you do a restoration, something might have been done improperly. > > Mike's and John's suggestions, particularly of disconnecting the wire from > the switch is something I have not tried and looking thru the manual might > also help. I do have shop manual for the 1968 Mustang. I assume they were all > the same. > > John: You mentioned that some Ford mechanics just disconnect the wire and > stowe it behind the bundle. Is this a safe idea and what exactly is the > function of the Brake switch if it can just be disconnected and not used? > > Anyway, thanks for the suggestions and if anyone else has something I might > try, I'd appreciate it. The switch screws into the top of the valve. It has a pin that extends into the valve. Inside the valve there is a double ended piston that slides back and forth. In the middle it has a notch. When the piston (aka shuttle valve) is centered it lets the pin side out of the switch to the off position. The complete valve assembly has two sides. Front braking system on one side of the shuttle valve and rear on the other. When you lose pressure on one side, but not the other the shuttle valve get pushed off center and the notch is no longer under the pin on the switch and it turns on the light on the dash indicating a brake hydraulic failure on one end or the other of the car. If you disassemble the block and the switch you can see how it all goes together. I think it is centered bt small springs. If it is off center for whatever reason the switch goes on. Easy to fix with it all apart. Calvin http://www.highrpm.net
Peter-One thing I might suggest that hasn't been mentioned so far. There is a remote possibility that, altho you did bleed the brake system w/new fluid, you might still have an air lock at the prop. valve. Pressure bleeding could reduce or eliminate that possibility. Regards, Stan ----- Original Message ----- From: "Peter Simmel" <simmel@maine.edu> To: <Shelbymustang@carmemories.com> Sent: Tuesday, April 12, 2005 1:24 PM Subject: Re: Question: Brake Light > Thanks to those who have responded to my question on the Brake > switch. Since I did take the entire proportional valve apart and did > a restore on it, which included new fluids, I don't image it's in the > valve. However, like anything else when you do a restoration, > something might have been done improperly. > > Mike's and John's suggestions, particularly of disconnecting the > wire from the switch is something I have not tried and looking thru > the manual might also help. I do have shop manual for the 1968 > Mustang. I assume they were all the same. > > John: You mentioned that some Ford mechanics just disconnect the > wire and stowe it behind the bundle. Is this a safe idea and what > exactly is the function of the Brake switch if it can just be > disconnected and not used? > > Anyway, thanks for the suggestions and if anyone else has something I > might try, I'd appreciate it. > > Peter > > > > > > > >I > >>> > >>> > >>> > >>> > >>> > >>>-- > >>>No virus found in this incoming message. > >>>Checked by AVG Anti-Virus. > >>>Version: 7.0.308 / Virus Database: 266.9.6 - Release Date: 4/11/05 > >> > >>Mike Greene > >>TENA Website Curator > >>Trideum Corporation > >>256.704.6113 > >> > >> > >> > > > >Calvin > >http://www.highrpm.net >
