Sticky brake drum, what bolt size for removal?

My drums are warped and need to be resurfaced, but I'm unable to remove a stubborn drum. What is the bolt size that removes the brake drum? 6mmx1.25mm? I can't remember, and my search button failed to yield my answer.

 

There is no bolt holding drum , you're brake shoes are extended into the worn surface of drum thats why its sticking, you need to adjust the shoes in until it clears the drum...

 

Let me explain... There are two threaded bolt holes on the face of the drum, opposite of each other, that assist in removing the drum when difficult. They basically "walk" the drum off the shoes when being tightened. I've done this before many years ago and it works. I need that bolt size.
I backed the shoes off all the way, and beat the crap out of it with a plastic dead blow mallet, and I sprayed PB Blaster around the hub only, didn't want to soak it, all with no luck. The other side looked great with a good 1/2 of the shoes worn, but the drum warpage on the stuck side makes me think extra wear and a ridge that the shoes can't pass.
The bolts have to be at least 2.5 inches long (60mm?), but with those bolts and a little banging around, a stuck drum comes off pretty easy. I just can't remember the bolt size

 

I've got two bolts that I found just for this reason. For the life of me I couldn't tell you what size they are. I think they may be M8 x 1.25 but don't quote me on that. It's a pretty small bolt somewhere in the M8/M10 range and it's definitely a fine thread pitch so I don't think it's higher than 1.50. You can usually find these type of bolts in an auto parts store. Don't bother looking in Home Depot or Lowe's.

 

Bolt size is M8x1.25. Be sure to back off the star adjuster in case a shoe had worn a groove in the drum (which can also cause the drum to be stuck).

 

Yeah, its M8-1.25 (30mm or longer).

 

If they're M8 x 1.25, that's the same size of skid plate bolts. Can you remember what the bolt head size is?

 

Thanks guys! I now know what to get at Ace. Yeah, I'm thinking the shoes wore a nice ridge into the drum, I want the easy assist. 30mm is too short for me, little more wiggle room is good. BTW, Pearly just turned 118K yesterday, and I think this is the first time the drum has been removed. The paper between the drum/axle is still intact. Thanks again everybody for the help!

 

On my other Taco, I had the bolts and a crow's foot and when I tried to remove it, it pulled the bolts right out of it. too much rust. Ended up I had to beat the crap out of the drum with a Sledge Hammer to break the rust holding it on the center hub. Finally after scoring it to deth it came off.

 

That is not what I want to do, the drums are still good, just warped. I priced drums through Carquest, and OEM Brembo's are $120 each. Ouch.

 

^You are looking in the wrong place. Rock Auto has Centric 6-lug drums for ~$30 each. P/N 12344022 (may also be listed as 123.44022):

http://www.rockauto.com/catalog/moreinfo.php?pk=2032360&cc=1388987

 

Wow, thanks for the heads up I'm gonna take a look around there for other stuff. Gotta go!

 

pretty certain that is not the intended method on using those threaded bolt holes.... as a pry-point.

mine were showing rust breakdown on the outside of the drum... so I “delicately” got the rust out & made sure not to lose/strip the threads getting the bolts in. Once I was sure of having about 3 threads worth, I tighted both down equally, beat the face of the drum with a rubber mallet rotating it, tightened both ~half a turn, beat it again, repeat... until there was loud pop and the drum came free from the axle face.

worked like a charm both sides, using both threaded bolt holes simultaneously... ie buy at least 2 bolts

 

Being there only a few threads in the drum if they are really stuck they will pull right out.

Best of luck.

 

8 X 1.25 X at least 100mm all tread, no sholder. I say at least 100mm because if it shoes are bound/rusted and you cant get the auto adjusters to un-adjust, you are going to have to "walk" the drum past the width of the shoe.

 

appreciate this thread! thanks!

 

I was replacing the drums anyway, didn't matter to me if they went south or not.

 

M8 x 1.25

 

I believe these are call "Jacking" bolts. I agree that you probably need to use them - along with backing off the shoes with the star wheel if they are out- to remove the drum.

 

asking for a friend, hand brake was down right?