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| No brake pressure buildup https://ausmini.com/forums/viewtopic.php?f=2&t=95660 |
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| Author: | PDJ [ Wed Jun 28, 2017 8:21 pm ] |
| Post subject: | No brake pressure buildup |
As the title says I have no pressure build up on the brake pedal. Brakes are working but there is no progression. The pedal moves about half way down then the brakes start and the force of pedal pressure is how much they apply without too much extra travel. The car is a 63 850 with a disc brake front. Parts changed so far: All 4 rubber hose Rear cylinders Rear shoes Rear drums Master cylinder There was a servo which has now been removed as that was causing a problem of pulling the brakes on when the engine was running. All 4 corners have been bled (a lot) No visible leaks. Fluid level doesn't drop when the brakes are pumped. I'm out of ideas so any help is greatly appreciated |
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| Author: | timmy201 [ Wed Jun 28, 2017 8:28 pm ] |
| Post subject: | Re: No brake pressure buildup |
Are the rear drums adjusted properly? Calipers on the correct side? |
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| Author: | haze blue 850 [ Wed Jun 28, 2017 8:53 pm ] |
| Post subject: | Re: No brake pressure buildup |
PDJ. I had nightmare with my 7" Cooper brakes after my resto some years back. I had the calipers on the wrong sides. Thus, the bleeders were at the bottom, so always had air. Eventually I realised my mistake. Easy when assembling front frame off the car! Never thought they were identical except the bleed ports. Alex. |
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| Author: | PDJ [ Wed Jun 28, 2017 9:18 pm ] |
| Post subject: | Re: No brake pressure buildup |
Yep callipers haven't been removed and the bleed nipples are at the top. Pretty sure the rears are adjusted correctly. |
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| Author: | drmini in aust [ Thu Jun 29, 2017 6:19 am ] |
| Post subject: | Re: No brake pressure buildup |
Pedal feels more solid without a servo. This is normal. |
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| Author: | minimans [ Thu Jun 29, 2017 7:20 am ] |
| Post subject: | Re: No brake pressure buildup |
Does it stop? Coz that sounds like a good pedal with no air in the system? |
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| Author: | Phil 850 [ Thu Jun 29, 2017 8:35 pm ] |
| Post subject: | Re: No brake pressure buildup |
Are the rear shoes adjusted all the way. Adjust them so that you can't turn the back wheel. Press the brake pedal hard a few times. Unadjust until you can turn the rear wheel with a little bit of scraping/friction. See if this makes a significant difference. |
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