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15th May 2022, 07:43 | #41 | |
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Are you calling the "rear" port that nearest to the brake servo? Is fluid being supplied from the other port? This is important because you've said that fluid is unavailable at all four wheels. You also said that this fault occurred after your mechanic fitted a new brake pipe. Which one? Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. Last edited by SD1too; 15th May 2022 at 07:46.. |
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15th May 2022, 10:02 | #42 | |
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Possibly by just clearing the blockage or by fitting a different ( new ) master cylinder most of the problems will go away. I think the --Closed Valve---a number have folk have mention is some kind of object blocking the outlet to the master cylinder. Stripping the original out would provide answers.--- Go, do it now.--- |
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15th May 2022, 10:08 | #43 | |
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I wonder with the cylinder off the car the piston can be moved fully and smoothly to the full extent of its stroke ? With the master cylinder full and both ports temporarily plugged it should be easy to see if the master cylinder is at fault, i.e. with both ports plugged it should be impossible to to push the piston to its full travel, if so he needs to look elsewhere. Whilst plugged, if the piston can be pushed to it's full extent, then it looks like problems at the reservoir to cylinder valve assembly being faulty, in that in normal operation the first few MM of movement of the piston the reservoir is sealed off from the cylinder allowing pressure to be applied to the system, a similar effect an also be caused by faulty piston seals. How to seal off the ports is quite simple. 2 X brake pipe nuts to suit, 2 X short pieces of copper brake pipe suitably flared ( male or female to suit the port ) at one end and soldered shut at the other end. There appear to be a few used ones about such as this one. https://www.ebay.co.uk/itm/275206989...wAAOxy14VRRMlF
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15th May 2022, 10:26 | #44 |
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SO MUCH easier to strip it down than all that fiddling about in the above post.--Go for the easy first---
You know it makes sense.-- |
15th May 2022, 11:00 | #45 | |
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That's all well and good if the OP knows exactly how a brake master cylinder works and more to the point, what to look for when he's got it in bits in front of him and how to go about fixing or condemning it ! The fiddling about, as you call it would take at most 30 mins, a miniscule amount of time compared with the hours that have been thrown at it to date. Making the plugs, there are other ways to plug them a bolt and PTFE tape, would do and allow, as well as testing his original cyl, allow him to prove say a second hand master cylinder, or a rebuilt one is up to it's job before refitting and finding, that without testing it, the problem still remains. Yes many go down the ' easy ' path, but as often seen on here and elsewhere, the ' easy ' way, in many instances doesn't result in a fix first time, resulting in more hours wasted.
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15th May 2022, 20:09 | #46 | |
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I've just checked Rimmer bros site and they've changed the description from "all models" to "Except diesel". |
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21st May 2022, 12:50 | #47 |
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Took the original master cylinder apart and as suspected the seals had deformed, possibly due to the garage using 40psi to bleed them and not 20psi. It appears that once this has happened you cannot simply reshape and refit the seals as they seem weaker, so the car is having a used MC fitted today.
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21st May 2022, 17:34 | #48 | |
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You will no longer be------ |
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21st May 2022, 17:45 | #49 |
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Going for MOT on monday. Car has been off the road for a few months so hopefully no further issues. Then again, with MY luck......lol.
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22nd May 2022, 07:35 | #50 | |
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Simon
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