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Un-Stick rear brake drum '71 Javelin |
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Lou Abernathy 
AMC Apprentice 
Joined: Jun/20/2014 Location: N.C. Status: Offline Points: 69 |
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 Topic: Un-Stick rear brake drum '71 JavelinPosted: Apr/24/2015 at 3:22pm |
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Un-Stick rear brake drum '71 Javelin V8 (AM20 axle) ??
Really stuck.......3 days of PB Blaster and hammer..........afraid to pound it harder: It's 10-inch, flanged (V8) drum...shoe adjustment is backed off, drum turns OK. Only way I can see is to remove hub....drum will come with hub (still attached) Hub off, should give better shot at backside of drum, without hitting flange (cracked = disaster) But rather not pull hub.....seems like asking for trouble with tapered axle (??).... and need puller. Ideas ?? |
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304-dude
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Joined: Sep/29/2008 Location: Central Illinoi Status: Offline Points: 9082 |
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Posted: Apr/24/2015 at 3:27pm |
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If it is down to the rivets, backing off the adjuster a lot more will free it up. I've seen some serious grooves from rivets.
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71 Javelin SST body
390 69 crank, 70 block & heads NASCAR SB2 rods & pistons 78 Jeep TH400 w/ 2.76 Low 50/50 Ford-AMC Suspension 79 F150 rear & 8.8 axles Ford Racing 3.25 gears & 9" /w Detroit locker |
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Rogue401
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Joined: Nov/26/2010 Location: New York Status: Offline Points: 1280 |
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Posted: Apr/24/2015 at 5:09pm |
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the drum is a very tight fit on the axle flange and you have to make sure you've scraped/filed/sanded the exposed part of the flange, so the drum will clear. Also spray the PB blaster around the lug nut holes so it wicks inside and keep taping it.
I have had to gently use the torch sometimes. It usually doesn't take much to free it
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tufcj
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Supporter of TheAMCForum Joined: Jul/10/2007 Location: Watkins, CO Status: Offline Points: 4097 |
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Posted: Apr/24/2015 at 6:05pm |
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Nice 4lb machinists hammer, pound directly on the flat surface between the lug nuts while prying gently with a small pry bar. Rotate around with both the pry bar and hammer, it will eventually pop. A large 3 jaw puller with light pressure and a bit of heat around the center hole for really stubborn ones.
Bob tufcj |
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69 AMX
74 Javelin AMX 67 Rogue If you need a tool and don't buy it... you'll eventually pay for it... and not have it. Henry Ford |
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Lou Abernathy
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Joined: Jun/20/2014 Location: N.C. Status: Offline Points: 69 |
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Posted: Apr/24/2015 at 9:30pm |
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Success !.....rear drum is off....without pulling hub....ow, my back.
Credit 4 days of PB Blaster....and hammer around the main drum, near face....not the flange's back edge. Debit PB Blaster for soaking the nearly new brake linings **: New question: any way to get PB Blaster out of nearly new lining ?? Heat, maybe ?..... but it is flammable Lacquer thinner ? Other ? Knew from previous removal, it would be a problem, so had painted flange surface AND used anti-seize It was not rusted, not any at all.....slides easily on hub Think problem is either the shoulder that is around each stud, which fits too tightly into the drum's holes (not seen this shoulder on GM's): or, the holes or studs are misaligned with each other.......Other side's drum is OK, not tight. Had it happen to you ?? _____________________________ ** soaked lining might be avoided by re-installing drum's hold-on screws a turn or two, to block these holes. |
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72AMX
AMC Nut
Joined: Aug/07/2007 Location: United States Status: Offline Points: 476 |
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Posted: Apr/25/2015 at 8:37am |
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You mentioned that the studs are very tight in the drum holes, did you replace the studs when you rebuilt the brakes, are you sure you used the proper size studs, they should be 1/2-20 threads.
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Lou Abernathy
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Joined: Jun/20/2014 Location: N.C. Status: Offline Points: 69 |
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Posted: Apr/25/2015 at 10:12am |
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Studs (and hub) look original......car shows only 80,000 miles.......overall condition looks like it's 80K
Drum on other side came off fairly easy. Just re-tried drum........it's really tight, and one stud looks like it might be slightly off. I'll handle this by slightly enlarging hole(s) until drum slips on. |
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george w
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Joined: Jan/27/2013 Location: New Jersey Status: Offline Points: 2899 |
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Posted: Apr/25/2015 at 12:10pm |
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Don't try to reuse those linings, they're contaminated by the PB Blaster.
New shoes are cheap insurance. ditto with the hardware. |
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Long time AMC fan. Ambassador 343, AMX 390, Hornet 360, Spirit 304 and Javelin 390. All but javelin bought new.
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gtoman_us
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Joined: Jul/10/2007 Location: E. Nebraska Status: Offline Points: 3871 |
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Posted: Apr/25/2015 at 1:55pm |
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Brake drum puller will get em off. I rented one from the local rental store to get my 25 year plus rusted drums off.
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Moderator - Emeritus
Used to collect trophies, now I collect gas receipts and put on miles 1964 Rambler Ambassador Cross Country Wagon 1965 GTO 1931 Model A original survivor "Flat Roofs are Cool" |
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carnuck
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Joined: Mar/31/2010 Location: Seattle Status: Offline Points: 3942 |
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Posted: Apr/25/2015 at 4:30pm |
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Too late now, but if you caught the fluid within minutes of being on the shoes, brake cleaner will usually save them.
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http://forums.amceaglesden.com |
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