power brake booster

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NoelM
Posts: 4
Joined: Fri Oct 12, 2018 8:30 am

power brake booster

Post by NoelM » Fri Oct 12, 2018 8:52 am

57 Bird 312 power brakes. I have had a brake fluid loss for some time.Wheels & drums off no obvious leaks ,master cylinder
master cylinder clean.lTues I jacked up lft fr wheel to loosen gen adjusting bolt tightened belt removed jack parked car.Wed AM drove to post office parking lot requires a rt turn & a small rise {about 18 inches} parked car with frt slightly elevated. Returned to car started engine &white smoke came out lft tailpipe for a couple mins. No more smoke. I did have booster vacuum line off & sealed for a week & fluid leak became much smaller but didn't stop.

goldwinghg
Posts: 230
Joined: Fri May 04, 2012 6:30 pm
Location: Houston, Tx.

Re: power brake booster

Post by goldwinghg » Fri Oct 12, 2018 9:33 am

No sure,but sounds like a vacuum leak,going from the brake booster,to your carb.

Hazard 56 T Bird
Posts: 77
Joined: Thu Mar 02, 2017 1:40 pm
Location: Southeast Kentucky

Re: power brake booster

Post by Hazard 56 T Bird » Fri Oct 12, 2018 1:09 pm

When they go bad they can really go bad, see below.

Hazard 56 T Bird
Posts: 77
Joined: Thu Mar 02, 2017 1:40 pm
Location: Southeast Kentucky

Re: power brake booster

Post by Hazard 56 T Bird » Fri Oct 12, 2018 1:16 pm

See Below
Attachments
BRAKE BOOSTER 2.jpg

NoelM
Posts: 4
Joined: Fri Oct 12, 2018 8:30 am

Re: power brake booster

Post by NoelM » Fri Oct 12, 2018 1:59 pm

That was ugly,BUT mine was rebuilt about 4 yrs ago by someone who has gone out of business, so I'm screwed.

Joe Johnston
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Location: Sunny FLORIDA

Re: power brake booster

Post by Joe Johnston » Fri Oct 12, 2018 2:44 pm

No you aren't. Re-builders are still in business and our Thunderbird specific parts suppliers show them in their catalogs.
2016-07-27 11.56.41.jpg
Too often we enjoy the comfort of opinion without the discomfort of thought. J F K

55-57 VTCI Forum Moderator
57 Inca Gold-Colonial White
63SR Silver Mink

ICON 1961
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Re: power brake booster

Post by ICON 1961 » Fri Oct 12, 2018 2:51 pm

1956 Thunderbird Sage Green
1997 Heritage Springer with Motorvation matching side Car Red/Birch White
2015 Tri Glide Harley Davidson Trike
VTCI Member # 12309

NoelM
Posts: 4
Joined: Fri Oct 12, 2018 8:30 am

Re: power brake booster

Post by NoelM » Fri Oct 12, 2018 9:10 pm

Actually Mac's is high, Larry's in So Cal is cheapest at $375 plus round trip shipping

apines
Posts: 34
Joined: Wed Jun 01, 2011 2:05 pm

Re: power brake booster

Post by apines » Mon Oct 15, 2018 10:31 am

Mine needs to be rebuilt (it's not providing any power assist and the engine speed increases slightly when the brake pedal is pressed which leads me to believe the diaphragm has failed and is causing a vacuum leak). I was planning to do it myself since I don't learn anything if someone else does it but rebuild kits seem almost as expensive as sending it out for rebuild (only a slight exaggeration). Is this a task that should only be attempted by professionals? I'd rather do it myself and the shop manual doesn't make it look that intimidating but I don't want something to fail catastrophically on the road, either. It seems like most folks just send them out -- has anyone had good success on their own?
1955 Ford Thunderbird
1966 Ford Thunderbird Q-code convertible with Highway Pilot

Joe Johnston
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Location: Sunny FLORIDA

Re: power brake booster

Post by Joe Johnston » Mon Oct 15, 2018 11:35 am

I'd rather do it myself and the shop manual doesn't make it look that intimidating but I don't want something to fail catastrophically on the road
I felt the exact same way. I disassembled mine and found the internal bore needed to be sleeved and machined. I sent it to White Post Restorations and had my same unit back in less than 2 weeks. Completely rebuilt and with a warranty. Much better than a failure!!!
Too often we enjoy the comfort of opinion without the discomfort of thought. J F K

55-57 VTCI Forum Moderator
57 Inca Gold-Colonial White
63SR Silver Mink

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