Back brake drums stuck on

Eskildsm

Member
I am trying to take the rear drums off my 1930 model A. Took rears off my other model A with no problem but on this model A they won't come off-- I've tried prying and heated them little but no help. I've searched high and low for a puller but no luck. It says you might need a rear hub puller but shows pulling the hub after drum is off -- which brings me back to my original problem of getting the drum off. I loosened the brake by turning the knob assembly on back of the drum assembly- one turns good the other side not so much. Anyone have any ideas?? Thanks!
 
Turn the adjuster counterclockwise no matter how much torque it takes. You won't break anything except you knuckles. It has to unscrew toward centerline of car.
You do need a hub puller. Borrow one. They are around. Find model a club near you and check with them.
 
The hub and drum comes off as one unit. Take the coter key out of the end of the axle, loosen the castle nut and then you will need a puller to pull the hub and drum off. Leave the castle nut on loose until the hub comes loose. That way you won't mushroom the end of the axle.
 
So if I understand this right I only need to loosen big nut on outside axle then use hub puller and it will pull hub and drum off as one piece -- I don't need to loosen any nuts or bolts on back of drum?? Once I have whole assembly off than I will be able to get drum off??
 
Correct. Once the hub pulls loose from the axle then you will need to remove the axle nut for it to come off all the way. Leaving the nut on keeps the hub assembly from popping all the way off in a rush and landing on the floor.
 
So if I understand this right I only need to loosen big nut on outside axle then use hub puller and it will pull hub and drum off as one piece -- I don't need to loosen any nuts or bolts on back of drum?? Once I have whole assembly off than I will be able to get drum off??
Take it to someone that knows how to take the hub and drum apart and has the tools. A big hammer will just cause damage.

Charlie Stephens
 
Take it to someone that knows how to take the hub and drum apart and has the tools. A big hammer will just cause damage.

Charlie Stephens

I agree with Charlie. You need a proper hub puller to remove them... and it is certainly worth you time and money if there is someone nearby that speaks Model A or Early Flathead V8.. the KR Wilson hub puller is the best.. but if you have early 28 style hubs it won't work. There are some hub pullers from brattons or snyders antique auto parts that are current production pieces that will do the job. Be very careful in removing as you don't want to ruin an axle and threads that could cause you much more grief.

Trust me.. I do service work and have rebuilt countless rear axles. The proper process is key to getting it off.
Larry Shepard
 
Re: Back brake drums stuck on- How axle threads get damaged

One way that axle threads get damaged in the first place:

Posted on FB 4 years ago:
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02-24-2013, 02:07 PM
#10 Benson
Senior Member

Join Date: May 2010
Posts: 1,205


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Re: Rear axle thread stripped-One cause of this ...


For the benefit of others who may not know this:

One cause of stripped axle threads is described below:

It is common to see the first 1/2 inch of axle threads stripped.

I hear folks telling people that this is the way to remove rear brake drums... this method only damages the axle threads.

One thing that causes the damage is that some one loosens the castle axle nut a couple of turns and hammers on the nut in an attempt to remove the hub/brake drum instead of using the correct tool.

As the axle nut is hammered the "castle nut" is deformed on top.

Now when the nut is threaded on the next axle shaft, the nut threads on 1/2 way then binds up when the smashed part of the nut starts to thread on the shaft.

Some folks do not stop at this point ... they just use a longer wrench to force the damaged nut on ... stripping the first 1/2 inch of the threads.

This is a good reason to avoid the use of an impact wrench to tighten things.

So if you find a nut that goes on nice 1/2 way then bends up, STOP and find a nut that is not damaged and destroy the damaged nut.

NOTE: (If you must use the "hammer on the axle nut" method then remove the nut, turn it around and thread it on with the "castle" toward the inside.)

This practice STILL DAMAGES the axle threads ... just not a bad as the first method.

I wonder how many times someone drops an axle nut and it rolls under the bench.

"Oh I have one in the can over there". If someone has hammered on this nut and you force it on the axle with a big pipe or impact wrench then the first 1/2 inch of threads on the axle will be damaged.

Over the last 55 years I have seen MANY axles in the parts piles with this damage!

The same thing applies to camshaft gear removal only there is no castle nut involved the threads are still damaged by hammering on the nut.


Last edited by Benson; 02-24-2013 at 02:29 PM. Reason: Correct several typos
 
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Thanks for all the replies. I'm going to try to find someone in town that will pull the back drums for me -- small town so not sure I will find someone and if not then I will order a puller online and try to pull myself then may have more questions after that. Does anyone have any tricks to loosen the adjustment knob on the back side of hub-- 1 turns and clicks fine the other one will turn about 1/2 turn but no clicks then freezes up.
 
I haven't tried this method, but have heard others have good luck by loosening the axle nut a turn or two, then drive a short distance, and the hub will come loose. If it comes loose then be careful about applying engine torque or you may damage the keyway.
 
I'm not sure why you want to take the drum off the hub. This is not necessary to do a brake job. Before using the puller try to loosen the brake adjuster as much as possible. If the wheel turns freely your good to go with the puller.
 
As Tom said in post 13 you can try that but you have to ask yourself... is it worth the fact of possibly ruining an axle... or having a wheel/drum come off while moving?

I would invest in a quality hub puller. since you are out west I would call Steve at Berts Model A Center Denver area. He can direct you to what he stocks and recommends. There are several. My favor is for the heavier universal type that is closer to $95 each or the KR Wilson which is more like $150. The axle thread protection is paramount. The cost of an axle and replacing it is much greater than the cost of the proper puller. Do yourself a favor and get the right tool.
Being too cheap is unwise. Now... having said that and as I said in my previous post if you can recruit someone schooled in Model A or Flathead V8 who has the proper tool and knows how to use it you may be best served with that.

Get on the V8 forum as well and see if there's anyone in your area.

Larry Shepard
 
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