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Brakes Getting HOT
#1
Have standard 9 inch rear end, small bearings. Put new shoes, hardware, and drums on.  Wheels spin freely.  Drums come off easily.  No binding.  After 20 mile drive, backing plates are so hot you will blister your hand if you touch them.  Aluminum wheels are actually getting hot.  No evidence of binding or shoes rubbing when car is sitting still. Rolls easily.  Will coast down slightly inclined driveway if in neutral.  Please help.  Unsafe to drive at present.
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#2
Another friction point is bearings - normally associated with some noise though.

[Image: wizzy.jpg]
Enjoy's searching out 71-73 history

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#3
This is NOT a dumb question because I've done it myself, as have many others I'm sure. (we just don't freely admit it!)
Did you forget to release the parking brake or make sure it was completely released? If you've had the brakes apart, is that mechanism connected correctly. Again I say this because I've just done my rear brake drums, first time in many years, and I needed to redo the parking brake levers.
I would double check everything, redoing it all if necessary. Also are the shoes on the correct sides of the drum. If all is good, then definitely bearings need to be checked.
[Image: drum-brakes-spring-guide.jpg]

Geoff.
 I learn something new every day!
[+] 1 user Likes Stanglover's post
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#4
Should have mentioned that I thought bearings first, so I replaced them with new Timkins. Also replaced seals while I was in there. Parking brake is not on, but when I was messing with it yesterday with rear end off the ground I discovered that if I put the parking brake on the drivers side wheel locks but the passenger side spins freely. Not good, but probably unrelated to problem as both sides heat up. Again, drums slide off very easily, no binding possible when sitting still. Can't imagine what, but almost like something changes once car gets rolling. Very confused. Thanks for the help !

PS Wheel Cylinders are new as well.
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#5
(04-20-2020, 05:26 PM)jackf Wrote: Should have mentioned that I thought bearings first, so I replaced them with new Timkins.  Also replaced seals while I was in there.  Parking brake is not on, but when I was messing with it yesterday with rear end off the ground I discovered that if I put the parking brake on the drivers side wheel locks but the passenger side spins freely.  Not good, but probably unrelated to problem as both sides heat up.  Again, drums slide off very easily, no binding possible when sitting still.  Can't imagine what, but almost like something changes once car gets rolling.  Very confused.  Thanks for the help !
Sounds like adjusters installed wrong side(s) I did this once. also, make sure return springs are new and play with them to see if they return spring.  Are cylinders new? You could get a brake pressure gauge and see differences of L to R pressure .
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#6
Those adjuster can be very confusing especially you don't keep them separated. I made that mistake! I needed to physically check the thread rotation to make sure I had left and right correct. Very important. Good point.

Geoff.
 I learn something new every day!
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#7
Just tossing something out there. Is there any wear showing up on the rest pads for the shoes on the backing plates?  I think the shoes have I believe 3 formed areas on each of the metal shoes that hold the lining. This was formed to give the shoe a better contact area. Check your backing plates and see if there is a step worn in the embossed areas. Would it be possible that the shoes go out to the drum and get hung on a step on the baking plate? If there is a step take a small grinder with sanding disc and smooth out the area. Also put a small amount of dics brake lube on the surface. 
Also are the springs that hold the shoes back on the baking plates in good shape do you have the cups for the springs turned the right way? Depressed center going into the spring so it sits flat on the shoe and seats properly.


When a man is in the woods and talks and no women are there is he still wrong??
Tongue
David
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#8
Hmmm  Chin
have the right diameter shoes been installed ?

[Image: wizzy.jpg]
Enjoy's searching out 71-73 history

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#9
Primary and Secondary shoes in the right spots?
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#10
Took car to brake shop. They said all was well. Turned out of round drums (brand new) and bled air from front brakes. Drove it home. Driver side fine. Passenger side hot as heck. Drum untouchable. Wheel very hot. Could wheel cylinder (brand new) be sticking or something ?
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