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T1 Hdlight
T2 Ground
T3 Domelight
T4 Dist. Shaft
T5 Em. Brakes

 

 

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Tip 05  Emergency Brakes

Overview   Bulletin #1   Bulletin #2

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Overview  top

This explains production changes that were made to the emergency brake system on Model A Fords in August 1930 and were documented in Ford bulletin #1 and #2 shown below.

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Ford Bulletin #1  top

Click to view larger image

Bulletin #1 shows where lugs were added to the emergency brake carrier plates so the band could not jump off and lock up the wheel.  We had this happen many years ago on a club tour.  The driver crossed a rough railroad crossing and the left rear wheel locked up, bringing the car to a screeching halt. We could not remove the drum so the car had to be hauled in, on a trailer.  When the drum was finally pried off we found that the emergency brake band had jumped off the carrier and was turned into an object that resembled a pretzel.

When this production change was made in August 1930, almost 4 million Model A’s had been produced. Consequently, most of the carrier plates now found at swap meets are the early “no lug” style.  You can convert  the early style plates by welding on lugs and finishing the profile with a die grinder, but doing this is not a quick and easy job.

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Ford Bulletin #2  top

Click to view larger image

Bulletin #2 explains the second change, which included a revised sector and pawl on the emergency brake lever.  (Not applicable to the early models that had a LH emergency brake handle or the one mounted in front of the shift lever.)  The teeth on the sector were increased from 4 to 5 and the pawl had a sharper point.  If you ever felt like you needed one more “click” on the handle to get the emergency brakes to hold tight, then you probably have the older style.  Here again almost 4 million cars were made before this revision was made so there are lots of early ones still in use.  You can buy the updated sector and pawl from most Model A parts dealer.

 

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Updated: 27 Feb 2007