juular Posted March 7, 2023 Share Posted March 7, 2023 12 hours ago, Fabergé Greggs said: Good advice thanks! Out of interest, what’s the science behind it failing in this way? Ie, why is it only failing with vacuum assistance? Is it just as simple as a failing seal? A dodgy seal does tend to behave in really random ways sometimes. If there's any rust inside the bore it gets even more baffling with the sometimes working, sometimes not. Excellent purchase btw. The fail sheet doesn't look bad at all for the age of it. The split boots are indeed shite but it would buy you a pass until the warmer weather if you felt like tackling it properly further down the line. Fabergé Greggs 1 Link to comment Share on other sites More sharing options...
Fabergé Greggs Posted March 8, 2023 Author Share Posted March 8, 2023 TAKE THAT, AGENTS OF THE GOVERNMENT (not sure why the garage wouldn’t have done all the CV boots but hey-ho) Welding and CV boots done for £150 which seems alright to me 320touring, LightBulbFun, Dyslexic Viking and 4 others 7 Link to comment Share on other sites More sharing options...
Fabergé Greggs Posted March 29, 2023 Author Share Posted March 29, 2023 I had a jolly time today changing the master cylinder on the camper. It was all going soooo well. Out with the old, in with the new BUT WAIT! It was only after I fitted it that I noticed that the new one has a bit of a protrusion that means that this union bit doesn't quite fit.. Should I A) take it apart, send it back and get the right one B ) Use two/three crush washers like a total arse? tommytwo and Matty 2 Link to comment Share on other sites More sharing options...
Dave_Q Posted March 29, 2023 Share Posted March 29, 2023 If it's pretty easy/cheap to get one that's right then A, otherwise I personally would gently* take a grinder to the m/c or the fitting to make it fit, being very careful to barely grind the sealing faces at all and only get a medium amount of metal filings into the hydraulic system. Talbot and Fabergé Greggs 2 Link to comment Share on other sites More sharing options...
Matty Posted March 29, 2023 Share Posted March 29, 2023 4 hours ago, Fabergé Greggs said: I had a jolly time today changing the master cylinder on the camper. It was all going soooo well. Out with the old, in with the new BUT WAIT! It was only after I fitted it that I noticed that the new one has a bit of a protrusion that means that this union bit doesn't quite fit.. Should I A) take it apart, send it back and get the right one B ) Use two/three crush washers like a total arse? Option b. You know it's wrong but it feels so right 😆 Fabergé Greggs 1 Link to comment Share on other sites More sharing options...
artdjones Posted March 29, 2023 Share Posted March 29, 2023 I would file the fitting just file the protruding bit until it's level with the sealing surface. It should be possible to do that without impinging on where the sealing washer sits. Don't use a grinder, the smallest slip could ruin it all. Fabergé Greggs 1 Link to comment Share on other sites More sharing options...
Mally Posted March 29, 2023 Share Posted March 29, 2023 It needs an extended adaptor, male/female, same thread. I mean I haven't got one like but.. Fabergé Greggs 1 Link to comment Share on other sites More sharing options...
Crackers Posted March 31, 2023 Share Posted March 31, 2023 You still got that Focus, mister? Link to comment Share on other sites More sharing options...
Fabergé Greggs Posted April 7, 2023 Author Share Posted April 7, 2023 On 3/29/2023 at 9:33 PM, Dave_Q said: If it's pretty easy/cheap to get one that's right then A, otherwise I personally would gently* take a grinder to the m/c or the fitting to make it fit, being very careful to barely grind the sealing faces at all and only get a medium amount of metal filings into the hydraulic system. On 3/29/2023 at 10:08 PM, artdjones said: I would file the fitting just file the protruding bit until it's level with the sealing surface. It should be possible to do that without impinging on where the sealing washer sits. Don't use a grinder, the smallest slip could ruin it all. Would I be better to file the M/C (iron or sommat?) or fitting (brass?) Link to comment Share on other sites More sharing options...
Fabergé Greggs Posted April 7, 2023 Author Share Posted April 7, 2023 On 3/31/2023 at 11:27 AM, Crackers said: You still got that Focus, mister? Yeah! It’s still ace! Just got back from a 1200 mile round trip to Scotland in fact. I’ve kind of outgrown it, but rather than getting something bigger and inferior I’ve just got a humongous roof box. Crackers and LightBulbFun 2 Link to comment Share on other sites More sharing options...
Mally Posted April 7, 2023 Share Posted April 7, 2023 8 minutes ago, Fabergé Greggs said: Would I be better to file the M/C (iron or sommat?) or fitting (brass?) As it's the master cyl that's different, I'd alter that. Hacksaw/file/dremil? Just need a steady hand. Fabergé Greggs and cobblers 2 Link to comment Share on other sites More sharing options...
Crackers Posted April 7, 2023 Share Posted April 7, 2023 18 minutes ago, Fabergé Greggs said: Yeah! It’s still ace! Fantastic, I'm pleased it's still doing well! Fabergé Greggs 1 Link to comment Share on other sites More sharing options...
cobblers Posted April 7, 2023 Share Posted April 7, 2023 Yeah I'd just grind the corner off the master cylinder, there's a lot of material to go at. Bollocks to filing it though, just get a flap disk on the angle grinder. probably bung a bit of blue roll in the hole or something Fabergé Greggs 1 Link to comment Share on other sites More sharing options...
artdjones Posted April 7, 2023 Share Posted April 7, 2023 1 hour ago, Fabergé Greggs said: Would I be better to file the M/C (iron or sommat?) or fitting (brass?) Probably the fitting. Is there any way to make a new pipe that just screws straight into the m/c. That fitting is there to avoid having a very tight 90°bend in the pipe, probably to make it easier to deal with the air cleaner. But it probably would be possible to make a tight bend in a new hard brake line that would do the job. Something like this:- That should still allow room for air cleaner removal. Link to comment Share on other sites More sharing options...
Fabergé Greggs Posted April 7, 2023 Author Share Posted April 7, 2023 55 minutes ago, artdjones said: Probably the fitting. Is there any way to make a new pipe that just screws straight into the m/c. That fitting is there to avoid having a very tight 90°bend in the pipe, probably to make it easier to deal with the air cleaner. But it probably would be possible to make a tight bend in a new hard brake line that would do the job. Something like this:- That should still allow room for air cleaner removal. Good shout but the fitting also joins 2 brake pipes into the one outlet on the M/C. Thinking a bit more about it, I reckon I’ll screw in a sacrificial banjo bolt and crush washer to use as a guide for grinding the M/C. That way if I take a tiny chunk out by accident it will protect the sealing surface Mally 1 Link to comment Share on other sites More sharing options...
Fabergé Greggs Posted April 8, 2023 Author Share Posted April 8, 2023 That went well using a cutting disc on a dremel with a washer as a guide. I was miles away from the sealing surface. it’s all back together with the pedal jammed down with wood- I’ve had success with that bleeding method before but I’ve never known why it works.. Dave_Q, Semi-C, uk_senator and 1 other 4 Link to comment Share on other sites More sharing options...
EyesWeldedShut Posted April 8, 2023 Share Posted April 8, 2023 44 minutes ago, Fabergé Greggs said: it’s all back together with the pedal jammed down with wood- I’ve had success with that bleeding method before but I’ve never known why it works.. I was told it allows air trapped in the system to 'float' up into the master cylinder overnight. Next day when you allow the pedal up the air gets pushed out of the master cylinder up into the reservoir. Only time I tried it was on a Renault Master clutch but that turned out to have a shagged slave thingy (one that hides in the bellhousing - b*stard thing). There was also a story about the old Series Land Rovers that if you parked them uphill overnight you could do the same with their brakes - never got that to work Fabergé Greggs 1 Link to comment Share on other sites More sharing options...
Talbot Posted April 8, 2023 Share Posted April 8, 2023 I've had success with the "lazy leg" method of bleeding before. The argument given to me was that the seals in the system are liquid-tight, but not gas tight, so if you leave the system with pressure in it, any air bubble adjacent to a seal will leak out past said seal. Sounded like a load of old rubbish to me, but the process worked. Fabergé Greggs 1 Link to comment Share on other sites More sharing options...
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