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Author Topic: Rear brake drums  (Read 1010 times)
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John Larkin
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Posts: 34


« on: 27 June, 2021, 09:30:05 AM »

A friend with an Aprilia cannot get his rear brake drums off.  He has removed the drive shafts.  I have not done this type of work on my own car, so I'm not able to guide him. 
I would appreciate any advice about getting the drums off.


John.
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John Larkin
1949 Aprilia berlina
chriswgawne
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« Reply #1 on: 27 June, 2021, 09:34:34 AM »

If there is any similarity in removal of rear brake drums between Lancia models of that general age, there will be 2 threaded holes opposite each other towards the inner area of the drum which will accept metric bolts ( either 6mm or 8mm i would guess) which will push the drum off its backplate when screwed in. Be careful to do this equally each side.
Hope this helps.
Chris
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Chris Gawne
Mobile: 07778 216552
John Larkin
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« Reply #2 on: 27 June, 2021, 09:57:56 AM »

Thanks Chris!

John
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John Larkin
1949 Aprilia berlina
Sliding Pillar
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« Reply #3 on: 27 June, 2021, 10:10:27 AM »

Also check that the handbrake levers on the backplates are fully off, they can stick.
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1955 Aurelia
1961 Lamborghini
davidwheeler
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« Reply #4 on: 27 June, 2021, 12:58:32 PM »

The back plates are not such as would take a lot of thrust I would think.   Moreover, I am not aware of such holes in my brake drums. If the drums rotate freely they should pull off using a big enough (so as to encompass the diameter of the drum) puller.    You may find the pics helpful.


* Aprilia back axle (Copy).jpg (321.97 KB, 842x1200 - viewed 49 times.)

* Aprilia brakes (Copy).jpg (338.54 KB, 839x1200 - viewed 50 times.)

* Aprilia drive shafts (Copy).jpg (230.08 KB, 838x1200 - viewed 54 times.)
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David Wheeler.  Lambdas, Aprilia, Fulvia Sport.(formerly Appia and Thema as well).
Raahauge
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« Reply #5 on: 27 June, 2021, 07:42:18 PM »

Threaded holes in the drums would, I think, only exist where the drum is mounted against a flange such as where the drums are mounted behind wheels.
As long as the drum is free to rotate as mentioned earlier then it is not difficult. There is a threaded nose in the centre of the drum about 35mm diameter to which a puller can be attached. The club may have a puller but if not I have one you can borrow.
If the drum is not free to rotate then it can be a pig as when you try to pull the drum off, the shoes cant over and lock things up. In this case keep turning the drum and gently pull at the same time but it can still be tedious. Call me if you wish. Best of luck.
Mike
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peterblenk
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« Reply #6 on: 31 July, 2021, 05:10:02 PM »

My rear drums have threaded bosses. A special cylindrical tool Shaped like a tin car, with one end removed)  screws onto these bosses. At the closed end of the tool is a screw that mates with a dimple in the axle end. Wind down this screw, and the drum should come off. Do not use levers on the edge of the drum, as you will only chip the drum and bend the backplate. If you don't have the tool, a machinist can make you one. I regret that I don't know the thread size. Peter
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neil-yaj396
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« Reply #7 on: 01 August, 2021, 07:37:17 AM »

My rear drums have threaded bosses. A special cylindrical tool Shaped like a tin car, with one end removed)  screws onto these bosses. At the closed end of the tool is a screw that mates with a dimple in the axle end. Wind down this screw, and the drum should come off. Do not use levers on the edge of the drum, as you will only chip the drum and bend the backplate. If you don't have the tool, a machinist can make you one. I regret that I don't know the thread size. Peter

I wonder if the Club has this tool for hire? Worth checking with Tim Heath.
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1979 1300 Beta Coupe, 2014 Ypsilon 1.2 S Series Momo
lancialulu
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« Reply #8 on: 01 August, 2021, 05:22:56 PM »

I believe we have a tool.

Tim
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Its not the winning but taking part! or is it taking apart?
1955 Aurelia B12
1967 Flavia Vignale iniezione
1967 Fulvia 1.3HFR
1972 Fulvia 1600HF
1972 Fulvia 1600HF
1972 1600 Fulvia Sport
1979 2500 Gamma Coupe
1988 Delta 1.6GTi
1998 Zeta
Raahauge
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Posts: 68


« Reply #9 on: 01 August, 2021, 08:40:23 PM »

Be aware that there are two types, some drums have a threaded boss and some have a plain nose with two slots which engage the fingers of a puller.
Mike
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