Brake Cylinder Rebuild
- biggiezeke
- Posts: 8
- Joined: Sat Jan 28, 2012 21:48
Brake Cylinder Rebuild
Has anyone used a rebuild kit on the old Lockheed tin can cylinder? I was told by a buddy that I could test it by sealing the top and the plunger should not move if the cylinder is working properly. Is this true?
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Re: Brake Cylinder Rebuild
In theory yes, but when I tried resealing one of them about a month later it leaked into the footwell (all over the nice new paint)
Come on summer
- Tim
- Posts: 2311
- Joined: Tue Oct 24, 2006 0:41
- Location: Hobart, Tasmania, Australia
Re: Brake Cylinder Rebuild
I just did a full rebuild on both the clutch and brake M/C in my Mini. I went the whole hog and had them re-sleeved in stainless. If the bore is OK and has no major pitting you can just fit a seal kit, but you need to clean the bore, preferably with a brake cylinder hone. I just have a cheapy that looks like this: http://www.toolmart.com.au/media/catalo ... 996806.jpg
I'm not sure about the test, I've never tried it. There are two holes in the bore between the the cylinder and the reservoir, so the plunger would only stop moving once the seal was past both holes.
Its not unusual to have problems bleeding the cylinder and getting it to start pumping fluid when its first re-fitted. I used a Gunson Eezibleed and followed their suggestion to bleed the cylinder on its own to start with, this can also double as a pressure test for the reservoir and the seals. So far no leaks and the brakes were reasonably effective for primitive single leading shoes.
Tim
I'm not sure about the test, I've never tried it. There are two holes in the bore between the the cylinder and the reservoir, so the plunger would only stop moving once the seal was past both holes.
Its not unusual to have problems bleeding the cylinder and getting it to start pumping fluid when its first re-fitted. I used a Gunson Eezibleed and followed their suggestion to bleed the cylinder on its own to start with, this can also double as a pressure test for the reservoir and the seals. So far no leaks and the brakes were reasonably effective for primitive single leading shoes.
Tim
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- Doug G
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Re: Brake Cylinder Rebuild
Did you rebuild it or did you replace the unit?Nigel(no top)Sykes wrote:In theory yes, but when I tried resealing one of them about a month later it leaked into the footwell (all over the nice new paint)
Having a moking good time!
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- Doug G
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