Author Topic: 3000 Rear Brakes  (Read 937 times)

jon3000

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3000 Rear Brakes
« on: March 10, 2022, 10:36:29 PM »
I just failed my MOT with my 3000 due to the rear brakes being imbalanced. The passenger side seems weak. They are Drums, I am trying to work out what they are from. I had always assumed them to be Sierra, (Front  Discs are Cortina). I believe the rear Diff is all Sierra.

I am trying to work out how they come apart and it would be helpful what they are from.  My construction manual does not give any clue about the rear brakes. It seems that the drum is retained by the big centre nut, but maybe I need to examine it in better light;

Advice would be appreciated.

Regards Jon

Nigel Haldane

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Re: 3000 Rear Brakes
« Reply #1 on: March 10, 2022, 11:05:54 PM »
Mine were sierra, pain to get them to pass the mot. Took them off and fitted discs off sierra work better but did have to remove a bit of the return on the wing as the tyre was a bit farther out than with the drums.
Chock car, hand break off. Remove screw on drum, Hit drum with dead blow hammer whilst trying to pry the drum off. They get a lip on the drum and you need to get over that.
Nigel Barnicle Midlands Area rep,
Midlands meeting, Please contact me and we can arrange something.

jon3000

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Re: 3000 Rear Brakes
« Reply #2 on: March 11, 2022, 08:01:58 PM »
Thanks Nigel,

I will take another look in the morning, the thing I was trying to work out if the drum is retained by the big hub nut, it looks like it is. There is no sign of retaining screws in the front of the drum, I could see a number in the casting I will try to make it out in daylight.

Hopefully I can find a giant socket the right size too.

Regards Jon

Nigel Haldane

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Re: 3000 Rear Brakes
« Reply #3 on: March 12, 2022, 06:59:39 AM »
Can you send a photo, I can’t remember if there was a retaining screw I think I have a ford Hanes manual I will look in a bit.
Just looked in the book, can’t see a screw in the drum.
« Last Edit: March 12, 2022, 09:40:33 AM by Nigel Haldane »
Nigel Barnicle Midlands Area rep,
Midlands meeting, Please contact me and we can arrange something.

jon3000

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Re: 3000 Rear Brakes
« Reply #4 on: March 12, 2022, 12:05:46 PM »
Hi Nigel,

The socket is 40mm, I am try to work out the where the seams are, I am assuming I have to remove the nut, but I am not sure about that. I have a socket on order.

Regards Jon

jon3000

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Re: 3000 Rear Brakes
« Reply #5 on: March 12, 2022, 12:08:05 PM »
Here is a second photo, a bit further back

Regards Jon

jon3000

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Re: 3000 Rear Brakes
« Reply #6 on: March 12, 2022, 01:50:30 PM »
I have my answer! hit it with a hammer a few times and the drum pulled off, no need for the socket! It did not seem right to undo the hub-nut , I just could not work out where the seam was. 

It looks like the brake cylinder is leaking which is making the brake ineffective

Regards Jon

Nigel Haldane

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Re: 3000 Rear Brakes
« Reply #7 on: March 13, 2022, 01:59:09 PM »
The nut is v tight, yep hammer comes to its own!
Nigel Barnicle Midlands Area rep,
Midlands meeting, Please contact me and we can arrange something.

jon3000

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Re: 3000 Rear Brakes
« Reply #8 on: March 19, 2022, 05:49:12 PM »
I  have just about fixed the brakes.

The issue was weeping brake cylinder coating the brake shoes and drum  face, it did not leak much but enough to screw up the brakes

for reference my brake are Ford Sierra,
The shoes are Ford part  5015665
Brake Cylinder Ford Part 6009659 (20.6 mm piston)

I also replaced the rear brake hoses, my car required the longer threaded male end so the Sierra ones did not work.
I found the

Ford Escort Front Hoses 1572004 fitted perfectly for the rear.

I hope it all passes the MOT retest. Regarding balancing, I have a couple of observations, there is a 22mm piston for estate car which probably fits so it would need to be both the same, the 20.6 is what my car uses. There is an automatic adjuster, I made sure they were both moving freely, one of mine was a bit stuck. After changing the shoes I reset the them so one was not starting over tensioned, it should adjust after operating the brakes a couple of times.

Fingers crossed I can get it retested Monday.