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MG TD TF 1500 - Rear brake drums

I am looking for the dimensions of a MG TD rear brake drum. I recently bought a 52 TD that has a TR-3 engine and tranny in it according to the engine serial number. The rear end appears to be original MG TD or possibly could be TR-3 , but the brake assemblies are clearly not MG TD or TR3. However, I think that the drums may be TD as they do have the 5 studs that fit my original TD wheels. Long story short, can someone tell me the exact inside diameter of the rear brake drum, the width of the drum, and (very important)the diameter of the hole that the axle fits through. If you could e-mail me a picture of the drum from both sides I would be greatly appreciative.

Thanks for your help.

Ken
Ken Bly

Hi, Ken.

I will send to your email box some pictures of the TD rear brake drum during my restoration.

I can also measure the required dimensions. I hope I can give them to you today Tuesday, or latests in 24 hours.

It's a pleasuire to be useful.

Regards.

Jesus
Jesus Benajes

I just got my rear drums back from the machine shop. The internal diameter is 9.025 inches. The splined centre is 1 5/16 low to low and 1 1/16 high to high. The shoe contact area is about 1 3/4 inches . Casting marks on the outer face read H28. Inside casting marks read MOWOG, also 101884, a large 2 in a raised square and EPA in a raised oval.

I was under the impression that that bolt pattern was unique to MG/Wolseley of that period.

My camera is elsewhere (my tools are never where I need them) but I can send pics by the end of the week of any chassis/drive train components if you need them.

There are some good rear axle/brake drum pics in Horst Schach's book. Treat yourself to a copy.


Tony

Tony Cove

Thank you both for your prompt response. The width of the drum you supplied is definitely thinner than my drum which is wide enough to accomodate 2" wide brake shoes.

I am trying to track down the brake assembly by using the casting number, FD4664, on my brake cyliner which is a Wagner Lockheed. So far, I have found this casting number to match a Studebaker and a Checker (which probably used Studebaker parts) however these vehicles used brakes larger than 9" which is what the inside diameter of my drum is. This brake cylinder is unlike an original MG TD cylinder both in that it mounts at the top center of the backing plate and it pushes out of both sides, unlike the TD cylinder which pushed only from one side and was mounted on the side of the backing plate.

The other very very odd feature of this brake assembly is that a piece of brass(???) pushes out from the center of the brake shoe into the drum. Yes, the brake shoes actually have a 1/2" to 5/8" hole right through the lining that this piece of metal comes through. I think it is part of the parking brake actuation??? Ever heard of anything like that????

Ken
Ken Bly

Ken; The fact that it has a hole in the center of the brake shoe indicates that it is a Studebaker. They used that plug in the center to operate a self adjusting set of shoes. In the center plug there was a wedge that was pulled by a cable. This in turn held the shoes closer to the drum. I had a 1953 Studebaker with that very same unit.
Sandy Sanders
Hudson Florida
conrad sanders

Sandy,

You were very helpful. I went to StudebakerParts.com and there was a picture of the exact self-adjusting mechanism on my drum brake assemblies. So now I do seem to know it's Studebaker it's just a matter of tracking down the exact model. Another picture of their brake shoes looks like it might be early 50's as you suggest. I will contact StudebakerParts.com tomorrow for their help. Thanks to all.


Ken Bly
Ken Bly

This thread was discussed between 28/10/2003 and 30/10/2003

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