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I have established that the diaphragm within the vacuum unit on my 1942 club coupe has perished. Can anyone help me in locating a firm where these diaphragms could be purchased??.

I have checked all the various elements on the vacamatic transmission (contacts, governor, engine idle speed etc etc) and unfortunately the problem has been identfied with the diaphragm

many thanks


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Is there anyone in your area who rebuilds power brake boosters? They may be able to help you.


many thanks foryour advice. I have checked a couple of firms  with they showed no interest whatsoever!! Must say that I am in Belgium and that 42 Chryslers are not that common over here!

Will continue my search.



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michel van eesbeeck


Many thanks to all  with your useful advice;


I have found a NOS diaphragm and have ordered it right away - However I have  a question. I will of course checking  this diaphragm as soon as it arrives but am always slightly concerned about a 70 years+ piece  of rubber...

Would you, gentlemen, have any experience with these NOS in terms  of reliability?


Also would anyone know if there is a company that is manufacturing these diaphragm new?

( I have just received an answer from Steele Rubber - they do'nt have this part in stock)


Many thanks



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  • 3 weeks later...

Michael, Check with Diran at Innovative Design Associates,4515 Kirkcaldy Rd Bloomfield Hills, MI 48304  248-646-0158  djyaz@yahoo.com  he makes new fresh diaphragms excellent copy and material. Don't know the price.


Hattie's Garage

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