New cast iron brake drum rubs on shoes
 

Recently I bought a pair of cast iron front drums when Mike's had a sale on them. These are the USA made drums (I think). They came with new hubs and lug studs installed, and I had them cut for a better surface and new shoes arced to fit.

On assembly I found I could not tighten the wheel bearings on one side without locking up the drum. Disassembly shows the drum to be rubbing on the outside edge of the shoes and backing plates.

As I see it, I have two options: cut the drum deeper on the inner surface or grind the edges of the shoes and backing plates. A third option occurs to me, though. Can I put shim behind the inner bearing to move the whole drum/hub assembly outward a bit? I was hoping to take a trip in the car tomorrow.

Re: New cast iron brake drum rubs on shoes
 

Have you tried swaping the front drums side to side?

Re: New cast iron brake drum rubs on shoes
 

Option 4, call Mike's. Let us know how they handle the problem. It is his problem unless you are leaving something out. The real measure of a business in not if they make mistakes but how they handle them. Please post the results.

Charlie Stephens

Re: New cast iron brake drum rubs on shoes
 

Are the shoes centered and in plane with the drum?

Re: New cast iron brake drum rubs on shoes
 

I haven't tried swapping the drums, but that is a good idea. The shoes are centered and in plane with the drum.
For now I've put the old drum back on that side, as I've got to go to work, but I'll post when I figure this out, and I thank you for your replies.

Re: New cast iron brake drum rubs on shoes
 

I had the same problem when I install new drums/hubs on the rear I bought from Mike's last winter. The fronts were OK as is. I ended up filing down the outer 1" to 1 1/2" of the brake shoes. After I went through the process two or three times, the drums tuned OK. I just used a large rasp to file a little off the ends. It may not have been precise but worked fine.
Rusty Nelson

Re: New cast iron brake drum rubs on shoes
 

I replaced my drums with cast iron drums and when I installed them they bottomed out on the brake shoe. I checked my original drums and the inside face was a 90 degree angle to brake shoe area. The cast iron drum was rounded I had to put them back on the lathe and cut that area out. This solved the problem. This was front and rear drums.

Re: New cast iron brake drum rubs on shoes
 

There are some bearings out there that don't seem to be as deep on the inner race and it allows the hub to ride in further. See if you can get a bearing number off that inner bearing and I will look to see if I have the number of a bearing that works.

Re: New cast iron brake drum rubs on shoes
 

See if it is a Timken 15118

Re: New cast iron brake drum rubs on shoes
 

Thank you for posting the number...

Re: New cast iron brake drum rubs on shoes
 

The inner bearing is marked Koyo 15118, a Japanese brand purchased from my local bearing house a couple of years ago. The races were in the hubs when delivered.

Re: New cast iron brake drum rubs on shoes
 

If the drum is going in too far and scrubbing on the inside have you put in axle shims?

Re: New cast iron brake drum rubs on shoes
 

Unless I'm mistaken, that only works on the rear drums. Dave was asking about fronts.

Re: New cast iron brake drum rubs on shoes
 

Simple fix would be to put a bevel on the outer edge of the lining.

Re: New cast iron brake drum rubs on shoes
 

Not trying to high jack this tread ,but has anyone had this problem with the drums and backing plate and shoes Snyder sells . Appreciate your input .

Re: New cast iron brake drum rubs on shoes
 

The old drum works but the new one does not. The first thing I would do is start measuring and figure out what is different. Then you know what needs to be fixed by how much.

Re: New cast iron brake drum rubs on shoes
 

I found a similar problem. I had to take off .020 from the new drum. It was not quite true (round). It appears that the new brake linings are thicker or the drum has a high spot.

Re: New cast iron brake drum rubs on shoes
 

When I measure a Timken bearing setting face down, the shoulder of the backside measures .825" deep. Does yours measure the same??

Re: New cast iron brake drum rubs on shoes
 

Mine are from Snyder's and I didn't have this problem.

Re: New cast iron brake drum rubs on shoes
 

call mikes & get the correct bearings for the races .

Re: New cast iron brake drum rubs on shoes
 

Before cutting the drum, or shaving shoes, I would shim either the inner bearing out or the inner race out, or better yet a little on each. Shims are not hard to make out of shim stock. I guess it will really depend on how much room you need. Here again the shims will tell when you have clearance, and how much. Sounds like the new cast drums have a bit of extra meat on them so this must a be wide spread issue.

Re: New cast iron brake drum rubs on shoes
 

any chance that the front inner seal was left out??? The metal front inner seal, part number A-1190 , listed on page A-93 in the Snyders catalog , goes under the front inner bearing. If this part is left out it could cause the drums to rub the backing plates and maybe the outer circumferance of the shoes.

Re: New cast iron brake drum rubs on shoes
 

Thanks J Bill ;

I am in the process of purchasing the rebuilt backing plate and cast iron drums from Snyders .

Re: New cast iron brake drum rubs on shoes
 

Bearings that are worn down on the large end of the rollers will allow the hub to go on too far.If brgs are good try bevelling the outer edge of linings & /or a shim behind inner brg.I wouldnt remove the radius on inner edge of drum as the radius gives it more strength.

Re: New cast iron brake drum rubs on shoes
 

Mike's and Snyder's brake drums are the same. Mike purchases the drums that he sells from Snyder's. I qualify this statement with the additional fact that I have been Mike's distributor builder for several years. This position has made it possible to observe what is good and what is not so good in regard to the quality of reproduction parts available to the Model A world. I can assure this audience that Mike's provides top tier parts AND service. I submit that anyone having a problem with the wares that Mike's sells should ring Mike personally for a resolution rather than grumbing in an internet organ. Mike's integrity is beyond reproach. Respectfully, Robert E. Andrews,Jr.

Re: New cast iron brake drum rubs on shoes
 

Who is grumbling or belittling Mike in this thread? I am not reading it as such.

Re: New cast iron brake drum rubs on shoes
 

I agree with Brent. We're just looking for solutions and knowledge. So Robert, are you aware of anyone else having this problem?

Re: New cast iron brake drum rubs on shoes
 

I finally had the opportunity to remove the hub and measure the inner wheel bearing race. The Toyo bearing is .8090" deep, thus substantially less than the measurement Brent took from the Timken bearing. My friend Steve Lewis says he has a pair of the correct Timken bearings and I will try them and report the result.
Many thanks for all your suggestions and help.

Re: New cast iron brake drum rubs on shoes
 

Front inner seals are in place, thanks.

Re: New cast iron brake drum rubs on shoes
 

I had this same problem with Snyders. Just beveled the edge a bit.