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Hi all,
just bled the brakes in my HQ Statesman (wouldnt surprise me if they haven't been done for 10 years). They have bled fine, and the system is now full of all new fluid. However the pedal seems to be nice and firm at the start, but then sinks to the floor slowly with pressure on it. It wasn't doing it before bleeding, and I'm 99.99% sure that there is no air in the system.
Theres no leaks from the rear cylinders nor the front calipers, and no fluid is running down the front of the booster. The level in the master cylinder reservoir is not changing either. Is it most likely a fluid leak past the seal in the master cylinder? It all looks original and the master cylinder is the big nut cast iron type.
Will a reconditioned master cylinder from a later model do the trick or is it best to get the big nut one re-conditioned?
Any help much appreciated
Rhys
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a new master cylinder would be a good idea or get a late one and reco it yourself with a kit from a brake place
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Hi Rhys.
This is one of the dangers of bleeding by just pumping the pedal. What happens is, the rubber cup in the master cylinder is pushed down the bore past the 'dirty' part where the piston doesn't normally & gets damaged. The only way to bleed brak |
If at first you don't succeed, just call it Version 1.0 |
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Rank: Veteran
Groups: Moderator, Registered
Joined: 1/03/2005(UTC)
Posts: 6,114
Thanks: 1 times
Was thanked: 219 time(s) in 199 post(s)
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Hi Rhys.
This is one of the dangers of bleeding by just pumping the pedal. What happens is, the rubber cup in the master cylinder is pushed down the bore past the dirty part where the piston doesnt normally & gets damaged. The only way to bleed brakes |
If at first you don't succeed, just call it Version 1.0 |
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Rank: Member
Groups: Registered
Joined: 7/03/2005(UTC)
Posts: 397
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Thanks for the posts guys.
Dr Terry I'll send you a message in regards to getting the original one re-sleeved etc. Sounds like the way to go. I have a newish alloy master cylinder off an HX that I was going to fit but going by what you've said I'd be b
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Rank: Member
Groups: Registered
Joined: 7/03/2005(UTC)
Posts: 397
Was thanked: 1 time(s) in 1 post(s)
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Thanks for the posts guys.
Dr Terry Ill send you a message in regards to getting the original one re-sleeved etc. Sounds like the way to go. I have a newish alloy master cylinder off an HX that I was going to fit but going by what youve said Id be best
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