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Rumble602
Firing on two.
Joined: January 26th, 2009, 10:16 pm
Posts: 1074
Location: Derbyshire
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 Brakes and that I've just rebuilt my front drum brakes, with new shoes and pistons. I've also adjusted the rears and bled everything through. Early road trails seem to suggest things are bedding in nicely.... however.... the first press this morning had my foot to the floor. A couple of quick pumps firmed things up and after a good hour of driving things were still good. So what's the reason for the initial lack of brakes? Still air trapped in the system, or is air being drawn in? There are no obvious leaks, and plenty of fluid in the reservoir. Your thoughts please 
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Mr Early Night aka Snuff Pusher
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| April 7th, 2013, 8:57 pm |
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Nelsthebass
Firing on two.
Joined: October 5th, 2009, 8:22 pm
Posts: 1415
Location: Stone, Staffs
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Re: Brakes and that Residual air I suspect - need more bleeding.....
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1987 2CV Special
2014 Suzuki Swift Sport
2015 Lexus NX300h
1966 Ami Break
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| April 7th, 2013, 9:28 pm |
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J-dub
Aircooled Idiot
Joined: April 24th, 2010, 10:01 am
Posts: 5733
Location: Location Location
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Re: Brakes and that You can get a vacumn thing to aid with bleeding. Make religiously sure that the fluid doesnt drop too low
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1988 2cv 652cc
1993 Toyota Hilux Surf 3000cc runs on Bio Diesel
2004 Toyota Landcruiser Amazon 4200cc runs on Bio Diesel
1998 Daihatsu Hijet 1300cc
2005 Susuki Bandit 650cc
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| April 7th, 2013, 9:42 pm |
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toomany2cvs
Firing on two.
Joined: December 26th, 2008, 9:40 pm
Posts: 3332
Location: Surrounded by 2cvs...
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Re: Brakes and that If it needed bleeding, it'd be back to needing a pump after a few minutes.
I wonder if it's those over-enthusiastically-auto-retracting brake cylinder rubbers again?
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Zookeeper of a miscellany of motorised silliness - from 0.75bhp to 9ft tall - now living life on the road in an old VW.
http://WhereverTheRoadGoes.com
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| April 8th, 2013, 10:58 am |
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Sean
Firing on two.
Joined: April 22nd, 2009, 11:06 pm
Posts: 3684
Location: Ecosse
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Re: Brakes and that certainly sounds plausible also having another go at the adusters all round now that the shoes have settled in a bit more
if it were air still in the system then the pedal would be spongy rather than hard
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Kissing the Lash
"Any advice of a technical nature is given on the understanding that I've actually done this shit, not just read about it in D*lly club mag some time ago.
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| April 8th, 2013, 11:13 am |
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FDK683
Joined: March 31st, 2011, 8:58 am
Posts: 26
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Re: Brakes and that I agree, would look for a mechanical problem rather than hydraulic. Go back to the basics. In addition to the adjusters, check that the shoes are centred. If the drums have been machined check that they arnt oversize.
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| April 8th, 2013, 12:38 pm |
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Roy Eastwood
Firing on two.
Joined: February 4th, 2009, 2:52 pm
Posts: 268
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Re: Brakes and that Air never draws in, couple of pumps is all that's required to lose all the air.
I would look at adjustments of shoes, unless you've also replaced master cylinder and/or rear cylinders.
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| April 8th, 2013, 3:22 pm |
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Sean
Firing on two.
Joined: April 22nd, 2009, 11:06 pm
Posts: 3684
Location: Ecosse
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Re: Brakes and that Roy Eastwood wrote: Air never draws in, couple of pumps is all that's required to lose all the air.
 air at ambient pressure : stab on the brakes - fluid at 100s psi if air could get in the fluid would have been long gone
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Kissing the Lash
"Any advice of a technical nature is given on the understanding that I've actually done this shit, not just read about it in D*lly club mag some time ago.
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| April 8th, 2013, 3:28 pm |
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