Go Back   The Ford Barn > General Discussion > Early V8 (1932-53)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 08-31-2020, 01:03 PM   #21
tubman
Senior Member
 
tubman's Avatar
 
Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 6,690
Default Re: Hydraulic Brakes 39 Ford.

Quote:
Originally Posted by RKS.PA View Post
Denny, agree about the leaking. And I, too, am a big fan...have them on all my cars. However, if the check valve fails to "check" couldn't that let air seep back into the system? I wouldn't necessarily see it because I'm in the car pumping the brake pedal?
I would have to think that if there was a leak in the check valve it would be much more prone to leaking fluid out when the fluid is under hundreds of pounds of pressure rather than air leaking in under 14.7 psi. Also, wouldn't air leaking in eventually give you a "spongy" pedal?

It will be interesting to see how this comes out; I'd hate to lose my Speed-Bleeders.
tubman is offline   Reply With Quote
Old 08-31-2020, 01:48 PM   #22
RKS.PA
Senior Member
 
RKS.PA's Avatar
 
Join Date: Jun 2010
Location: Marana, AZ
Posts: 886
Default Re: Hydraulic Brakes 39 Ford.

Quote:
Originally Posted by tubman View Post
I would have to think that if there was a leak in the check valve it would be much more prone to leaking fluid out when the fluid is under hundreds of pounds of pressure rather than air leaking in under 14.7 psi. Also, wouldn't air leaking in eventually give you a "spongy" pedal?

It will be interesting to see how this comes out; I'd hate to lose my Speed-Bleeders.
That's makes sense and realize air would cause a spongy pedal rather than a lock up! I, like you, never intend to give these up!! Think is was 51merc that put me on to these 4 or 5 years ago in a post about brake bleeding.

This has been a very instructive thread for me. Thank you Phil...even though we haven't solved your problem yet!! I went out to my shop and checked the spare pair of speed bleeders I keep as a reserve. They are Dorman...made in China. I've had two failures with these. Am throwing out my spares and buying some "Made in the USA"....betting these won't fail!!
RKS.PA is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 08-31-2020, 04:50 PM   #23
19Fordy
Senior Member
 
19Fordy's Avatar
 
Join Date: May 2010
Location: Coral Springs FL
Posts: 8,206
Default Re: Hydraulic Brakes 39 Ford.

I think it's time to rebuild the MC.
19Fordy is offline   Reply With Quote
Old 08-31-2020, 07:06 PM   #24
meric42
Senior Member
 
meric42's Avatar
 
Join Date: Aug 2010
Location: Blenheim, New Zealand
Posts: 739
Default Re: Hydraulic Brakes 39 Ford.

I had a similar problem on my '53 after changing the brake light pressure switch out three times from a shiny looking one to an old crusty one, now my brake lights are only on when I press the pedal. Just goes to show just because it's shiny doesn't mean it's good
__________________
I need an 01A 1453 Brkt Spare wheel hold down for my sedan delivery - PLEASE HELP

Gotta love my '42 Sedan Delivery's - Now that I own the only two in New Zealand

https://www.fordbarn.com/forum/album.php?albumid=580
meric42 is offline   Reply With Quote
Old 08-31-2020, 08:39 PM   #25
Phil Gillespie
Senior Member
 
Phil Gillespie's Avatar
 
Join Date: Sep 2011
Location: Christchurch New Zealand
Posts: 1,328
Default Re: Hydraulic Brakes 39 Ford.

Quote:
Originally Posted by 1931 flamingo View Post
How about the length of the rod that goes into the cylinder from the brake pedal??
Paul in CT
Have not had this out or adjusted recently. Have had no cause to adjust.
Phil NZ
Phil Gillespie is offline   Reply With Quote
Old 08-31-2020, 08:41 PM   #26
Phil Gillespie
Senior Member
 
Phil Gillespie's Avatar
 
Join Date: Sep 2011
Location: Christchurch New Zealand
Posts: 1,328
Default Re: Hydraulic Brakes 39 Ford.

Sponsored Links (Register now to hide all advertisements)
Quote:
Originally Posted by 19Fordy View Post
I think it's time to rebuild the MC.
Yes kinda think so. Have these bits now on order. Local NZ supply so should not take long.
Phil NZ
Phil Gillespie is offline   Reply With Quote
Old 09-01-2020, 08:31 AM   #27
RKS.PA
Senior Member
 
RKS.PA's Avatar
 
Join Date: Jun 2010
Location: Marana, AZ
Posts: 886
Default Re: Hydraulic Brakes 39 Ford.

Quote:
Originally Posted by Phil Gillespie View Post
Yes kinda think so. Have these bits now on order. Local NZ supply so should not take long.
Phil NZ
Good luck, Phi. Please keep us posted and hoping this solves your problem!!
RKS.PA is offline   Reply With Quote
Old 09-01-2020, 10:15 PM   #28
Phil Gillespie
Senior Member
 
Phil Gillespie's Avatar
 
Join Date: Sep 2011
Location: Christchurch New Zealand
Posts: 1,328
Default Re: Hydraulic Brakes 39 Ford.

Quote:
Originally Posted by RKS.PA View Post
Good luck, Phi. Please keep us posted and hoping this solves your problem!!
Yep will do. I also hope it does. Winter/Spring here now time to be out driving these fine vehicles.
Phil NZ
Phil Gillespie is offline   Reply With Quote
Old 09-09-2020, 09:49 PM   #29
Phil Gillespie
Senior Member
 
Phil Gillespie's Avatar
 
Join Date: Sep 2011
Location: Christchurch New Zealand
Posts: 1,328
Default Re: Hydraulic Brakes 39 Ford.

Update:
Just replaced the original M/C with a new one. This has fixed the problem. The new one has the smaller screw in top with a vent . Speed bleeders are ok.
Appreciate all advice.
Phil NZ
Phil Gillespie is offline   Reply With Quote
Old 09-10-2020, 01:50 AM   #30
Clem Clement
Senior Member
 
Clem Clement's Avatar
 
Join Date: May 2010
Location: Fairfax, VA
Posts: 3,005
Default Re: Hydraulic Brakes 39 Ford.

Have you tried going back to the
old system?
Clem Clement is offline   Reply With Quote
Old 09-10-2020, 01:50 AM   #31
Clem Clement
Senior Member
 
Clem Clement's Avatar
 
Join Date: May 2010
Location: Fairfax, VA
Posts: 3,005
Default Re: Hydraulic Brakes 39 Ford.

What is a speed bleeder, please?
Clem Clement is offline   Reply With Quote
Old 09-10-2020, 02:18 AM   #32
tubman
Senior Member
 
tubman's Avatar
 
Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 6,690
Default Re: Hydraulic Brakes 39 Ford.

A "Speed-Bleeder" is a replacement bleeder screw with a check valve inside of it. It will let the brake fluid out but not back in. They are a boon to those of us who do not have a "cooperative other" to pump the brakes for us; they allow one person bleeding of the brake system. Here's a link : http://www.speedbleeder.com/.
tubman is offline   Reply With Quote
Old 09-10-2020, 07:56 AM   #33
RKS.PA
Senior Member
 
RKS.PA's Avatar
 
Join Date: Jun 2010
Location: Marana, AZ
Posts: 886
Default Re: Hydraulic Brakes 39 Ford.

Quote:
Originally Posted by Phil Gillespie View Post
Update:
Just replaced the original M/C with a new one. This has fixed the problem. The new one has the smaller screw in top with a vent . Speed bleeders are ok.
Appreciate all advice.
Phil NZ
Glad you found the problem part and glad you fixed it!! Thanks for keeping us update....trouble shooting this one step at a time.
RKS.PA is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 06:11 AM.