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lawn
03-26-2008, 11:55 AM
1962 hawk rear brakes drag when car is in reverse. just had a complete brake rebiuld. car rolls free in forward and neutural, but when put in reverse it feels as if the rear brakes are engaged. what is my brake man missing?this was not a problem before it went to his shop.

Dick Steinkamp
03-26-2008, 12:05 PM
Having a "shop" work on your Stude is kind of a crap shoot. Very few techs in today's shops have any experience with Studebaker brakes (maybe older drum brakes in general). Unless you find a shop that has someone with actual experience OR one that is willing to take your shop manual and follow it to the letter, chances are SOMETHING will not be assembled correctly.

Could be the shoes are not adjusted per the manual. Ebrake adjusted too tight. Primary and secondary shoes installed in the wrong location, Anchor block installed backwards. Springs left out or installed in wrong locations. Drum warped from being removed improperly. MC push rod not adjusted properly. Maybe 10 other things that can go wrong on an install without experience or following the shop manual.

http://i149.photobucket.com/albums/s66/ddstnkmp/54%20starlight/HiResS2Dsig2.jpg

lawn
03-27-2008, 11:03 PM
my brake guy is old school,says he is familiar with studebakers. I ran all the possibilities by him but the brakes still drag when you put the car in reverse. All brake parts had been replaced, including the master cylinder. Any more ideas out there?

Dick Steinkamp
03-28-2008, 09:35 AM
Obviously something was done wrong. Brakes shouldn't drag in reverse. If he is a competent mechanic and familiar with Studebakers, he should be able to find the problem when he tears it back down again. It's a bummer, but I've sure had to do a job more than once myself due to a screw up on my part (but I'm only SEMI competent ;)). You may want to bring him your shop manual. Perhaps if he reviews it, before tearing into it he'll see whatever it was that was done wrong.

One other thought. You say "all brake parts were replaced". Did this include the flex lines? If not, when they get old they can swell internally and hold pressure on the brake side of the system.

http://i149.photobucket.com/albums/s66/ddstnkmp/54%20starlight/HiResS2Dsig2.jpg

studebaker-R2-4-me
03-28-2008, 09:45 AM
Swelling of the flexible braking lines caused my Hawk to pull to the right. The hose looked perfectly fine until I took the hose off the brake cylinder and found that no fluid was passing through the left hose. This is a possibility only in reverse for your situation. Take the car back to the mechanic with the shop manual... something is amiss.

good luck



http://i122.photobucket.com/albums/o278/studebaker-r2-4-me/Side.jpg

1964 GT Hawk R2 Clone
Oakville, Ontario.

Hamilton Chapter
See you at Niagara 2008 Crossroads Zone Meet July 18-20

Dick Steinkamp
03-28-2008, 09:53 AM
IMHO, brake hoses COULD be the weakest link in a brake system and perhaps the most overlooked part of brake maintenance. I'd say 10 years MAX is the life of them, and if you don't know how old they are...replace them!

If you are LUCKY, old hoses will make the brakes drag or the car pull. Unlucky and one will burst when you need it the most [:0].

http://i149.photobucket.com/albums/s66/ddstnkmp/54%20starlight/HiResS2Dsig2.jpg

kamzack
03-29-2008, 02:51 PM
another comment about hoses. I've had a couple that would let pedal pressure push fluid to the wheel cylinder,(as if it had a one way flap or valve) but not let all fluid pressure return. Were the wheel cyinders replaced or rebuilt? One piston could be sticking in the bore. Even when using new ones I take them apart to be sure of free movement.
Hope this helps,
Kim

52 Ragtop
03-30-2008, 12:13 AM
According to Raybestes, 3 years is the recommended replacement time on standard brake hoses! Unless you use the braided stainless lines that are teflon lined, But, they are not "forever" either.

Jim

Dick Steinkamp
03-30-2008, 12:32 AM
quote:Originally posted by 52 Ragtop

According to Raybestes, 3 years is the recommended replacement time on standard brake hoses! Unless you use the braided stainless lines that are teflon lined, But, they are not "forever" either.

Jim


I like your three better than my 10. Good advice, Jim [^]

http://i149.photobucket.com/albums/s66/ddstnkmp/54%20starlight/HiResS2Dsig2.jpg