Jim Mason Posted December 31, 2021 Share Posted December 31, 2021 Help... Clutch slave damper seems to have failed or is blocked unable to get any fluid past it to bleed clutch, gravity bleeding is doing nowt. Used my break bleeder to force fluid through but nothing is happening. Does anyone have any ideas to resolve issue? Replaced slave cylinder due to fluid found in bell housing when engine was removed, engine back in but now peddle on floor unable to bleed. Bleed nipple is top facing, unsure what else to try... Quote Link to comment Share on other sites More sharing options...
Arjan Posted December 31, 2021 Share Posted December 31, 2021 Are you getting fluid from the Master Cylinder ? Are you getting fluid pass the flexible bit ? Are you getting fluid before the damper ? You really need to start at the beginning and assume nothing.. Quote Link to comment Share on other sites More sharing options...
Stellaghost Posted December 31, 2021 Share Posted December 31, 2021 As above, flexible pipe can degrade blocking fluid route, no obvious kinks or damage in pipework from engine removal , clutch fork ok not punched through ( it happens ) master cylinder seals ok and not bypassing, as Arjan says you need to do it in order to find where the issue is regards Stephen Quote Link to comment Share on other sites More sharing options...
Jim Mason Posted December 31, 2021 Author Share Posted December 31, 2021 Got fluid all the way to the damper, prior to replacing the slave cylinder had fluid all the way to the damper, upon pressing pedal fluid was coming out with some force. Quote Link to comment Share on other sites More sharing options...
Jim Mason Posted December 31, 2021 Author Share Posted December 31, 2021 Going to try & reverse bleed using brakes to provide the pressure. Quote Link to comment Share on other sites More sharing options...
Jim Mason Posted January 1, 2022 Author Share Posted January 1, 2022 Found this during an internet search, its got to be worth a try? https://mtaeta.info/thread/2494/reverse-bleeding-clutch-system Bleeding a clutch system in reverse if the conventional method is not working correctly. This method has been ok on several occasions to bleed a clutch system where its been difficult to bleed it in the normal way. Connect a pipe from brake caliper bleed nipple to bleed nipple for the clutch ,using the brake pedal pump the fluid so any trapped air will end up coming through to the master cylinder Unless you have a device to bleed it that way !!just a tip and something to try Done clutches and had a couple after a few days and the pedal has dropped,after bleeding them in reverse solved the problem. Â 1 Quote Link to comment Share on other sites More sharing options...
western Posted January 1, 2022 Share Posted January 1, 2022 Would it be easier to remove the damper & just pipe the master & slave as on a 90 or 110. The damper doesn't affect the actual clutch engagement. Quote Link to comment Share on other sites More sharing options...
Jim Mason Posted January 1, 2022 Author Share Posted January 1, 2022 Not sure lot of discussion on this on line, what is the best option. Was fully working fine, till the engine was removed, so seems a shame not to get it working again. Quote Link to comment Share on other sites More sharing options...
Nonimouse Posted January 4, 2022 Share Posted January 4, 2022 Are you reverse pressure bleeding - if not, it won't work. And you need to really bleed it through - about 500ml The damper is essentially a deliberate air bubble in the system Replacement with a 110/90 flexi pipe is the best way, but as they last so long when ste up correctly, it's a bit of a phaff. Quote Link to comment Share on other sites More sharing options...
Jim Mason Posted January 4, 2022 Author Share Posted January 4, 2022 Was going to reverse bleed, get fluid into all of the pipework using a clean pump and fresh fluid. Then fill reservoir and gravity bleed. Hopefully this should resolve all issues 1 Quote Link to comment Share on other sites More sharing options...
Nonimouse Posted January 5, 2022 Share Posted January 5, 2022 13 hours ago, Jim Mason said: Was going to reverse bleed, get fluid into all of the pipework using a clean pump and fresh fluid. Then fill reservoir and gravity bleed. Hopefully this should resolve all issues Reverse bleed the only way to do it - and even dealer practice in the olden times Then just top up the reservoir Quote Link to comment Share on other sites More sharing options...
Snagger Posted January 6, 2022 Share Posted January 6, 2022 I’ve not seen these dampers before.  What is its purpose? Quote Link to comment Share on other sites More sharing options...
Nonimouse Posted January 6, 2022 Share Posted January 6, 2022 2 hours ago, Snagger said: I’ve not seen these dampers before.  What is its purpose? Something often discussed amongst Discovery 1 owners. Quote Link to comment Share on other sites More sharing options...
western Posted January 6, 2022 Share Posted January 6, 2022 I think its just to make the pedal return slowly without the clunk you get om s 90 or 110 clutch pedal, an attempt to make it more 'car like'Â Quote Link to comment Share on other sites More sharing options...
Snagger Posted January 7, 2022 Share Posted January 7, 2022 Does it affect the clutch engagement rate, or just the pedal?  I can’t see the point unless it gives smoother clutch engagement for clumsy drivers in order to protect the transmission. Quote Link to comment Share on other sites More sharing options...
western Posted January 7, 2022 Share Posted January 7, 2022 see Miketomcat's reply in  1 Quote Link to comment Share on other sites More sharing options...
Jim Mason Posted January 15, 2022 Author Share Posted January 15, 2022 Reverse bled clutch, got fluid all the way through but still no clutch pedal, its flat to the floor. Has master failed as well? Quote Link to comment Share on other sites More sharing options...
Snagger Posted January 16, 2022 Share Posted January 16, 2022 Possible, but the chances of it failing as you do this job seem small. Â Did you bypass the damper? Quote Link to comment Share on other sites More sharing options...
Snagger Posted January 16, 2022 Share Posted January 16, 2022 Are you able to pressure bleed downward through the system and get fluid expelled? Â Seems like you still have air trapped somewhere. Another possibility is a failed clutch fork. Â Air in the system should still get a firmer pedal with a few rapid pumps. Quote Link to comment Share on other sites More sharing options...
Jim Mason Posted January 16, 2022 Author Share Posted January 16, 2022 Removed master cylinder, drained fluid out. Took into kitchen filled reservoir with water and pushed piston in & out nothing was ejected out of master cylinder. Looks 100% like its passing past the seals, stripped & nothing obvious no bits missing etc. Quote Link to comment Share on other sites More sharing options...
Snagger Posted January 17, 2022 Share Posted January 17, 2022 They look good, but something is wrong in the MC. Â Is the reservoir feeding the cylinder correctly? Â There may be a blockage or perhaps the connection is staying open on the pedal downstroke. Quote Link to comment Share on other sites More sharing options...
Nonimouse Posted January 17, 2022 Share Posted January 17, 2022 The seals can look fine but may have hardened slightly, or deformed or just become cursed by the God of Land Rover Quote Link to comment Share on other sites More sharing options...
Jim Mason Posted January 17, 2022 Author Share Posted January 17, 2022 Seem pretty hard to me, not seen new but as a hydraulic engineer i would not use them... Fresh fluid instantly turned dark with silver particles... Replacement is the way forward with this... 1 Quote Link to comment Share on other sites More sharing options...
Nonimouse Posted January 18, 2022 Share Posted January 18, 2022 21 hours ago, Jim Mason said: Seem pretty hard to me, not seen new but as a hydraulic engineer i would not use them... Fresh fluid instantly turned dark with silver particles... Replacement is the way forward with this... In the olden times I would have rebuilt a master cylinder or slave cylinder, now I'd just buy a new one. But onlt TRW or AP Lockheed 1 Quote Link to comment Share on other sites More sharing options...
Jim Mason Posted January 19, 2022 Author Share Posted January 19, 2022 Thats what ive done, might re-build and keep as a spare... 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.