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Clutch hydraulic failure #654101
03/08/20 08:32 PM
03/08/20 08:32 PM
Joined: Nov 2012
Posts: 141
West Texas/Southern NM
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Piloto Offline OP
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West Texas/Southern NM
After a rather uneventful 4300 miles in my 3 wheeler, its clutch release failed. Suspecting the master cylinder, I inspected it, but found no evidence of hydraulic fluid leakage. I was also a bit perplexed in that the hydraulic fluid reservoir level has dropped little, if any.
I am suspecting the slave cylinder, but have not raised the machine on the lift to investigate.
My question: Is the slave cylinder near the throwout fork difficult to access and service?

Thank you,

Tom

Re: Clutch hydraulic failure [Re: Piloto] #654107
03/08/20 08:50 PM
03/08/20 08:50 PM
Joined: May 2011
Posts: 1,228
Near Windsor Berkshire
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It is an engine out job to access the clutch slave cylinder.


2013 M3W
1971 4/4 2 Seater
1934 Sports
Re: Clutch hydraulic failure [Re: Piloto] #654108
03/08/20 08:56 PM
03/08/20 08:56 PM
Joined: Aug 2011
Posts: 358
Auckland New Zealand
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Auckland New Zealand
Hi piloto

I had a similar issue and it was the seals failing in the master cylinder on the pedal box.
No drop in fluid, no leaks but no actuation of clutch when pedal pushed.

I couldn’t source a unit in NZ although they are not expensive ex Morgan.
I just got existing unit reconditioned.

Initially was very concerned that the slave had failed, which on my 2012 car was inside bell housing and would of meant engine out!
Very relieved it was the master

Nigel

Re: Clutch hydraulic failure [Re: Piloto] #654117
03/08/20 10:08 PM
03/08/20 10:08 PM
Joined: May 2019
Posts: 173
Hampshire, UK
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Begs the question, if the slave cylinder fails on the internal version, can it be converted to the external version after the engine is removed?


M3W Brooklands (2015)
Moody 41 (2013)
Re: Clutch hydraulic failure [Re: IMHO] #654130
04/08/20 02:03 AM
04/08/20 02:03 AM
Joined: Feb 2019
Posts: 2,494
Port Orchard, WA.
LightSpeed Offline
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Port Orchard, WA.
Originally Posted by IMHO
Begs the question, if the slave cylinder fails on the internal version, can it be converted to the external version after the engine is removed?


Great question, because I hate the way the clutch seems to be all at the end of the travel . With an external adjust you should be able to adjust the engagement where you want it.


Stephen
2019 M3W piling on the Covid miles

Re: Clutch hydraulic failure [Re: Piloto] #654132
04/08/20 04:15 AM
04/08/20 04:15 AM
Joined: Nov 2012
Posts: 141
West Texas/Southern NM
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Piloto Offline OP
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Gentlemen, thank you for your responses. I will address the master cylinder first, and hope for the best. The engine out thing does not appeal in the least.

Tom

Re: Clutch hydraulic failure [Re: Piloto] #654136
04/08/20 05:46 AM
04/08/20 05:46 AM
Joined: May 2012
Posts: 1,595
Gods own county! Oop north
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Dab of oppo Online happy
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Unfortunately they are all internal, there are no external versions. For the cost of the slave cylinder it is worth changing if the engine has to come out.

Re: Clutch hydraulic failure [Re: Piloto] #654139
04/08/20 06:21 AM
04/08/20 06:21 AM
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Re: Clutch hydraulic failure [Re: Dab of oppo] #654154
04/08/20 08:19 AM
04/08/20 08:19 AM
Joined: Jun 2012
Posts: 1,436
United Kingdom, Lincolnshire
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United Kingdom, Lincolnshire

Originally Posted by Dab of oppo
Unfortunately they are all internal, there are no external versions. For the cost of the slave cylinder it is worth changing if the engine has to come out.


There are a small number of M3W's with the external clutch slave cylinder. See page 20 of the Parts book for details. It looks like MX5 parts. Agree that the internal slave cylinder is worth replacing when the engine is out, they are fairly cheap, unless you buy a genuine Volvo or Morgan part.

Re: Clutch hydraulic failure [Re: Piloto] #654158
04/08/20 08:55 AM
04/08/20 08:55 AM
Joined: Aug 2019
Posts: 632
Madrid, Spain
Marmota Offline
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Posts: 632
Madrid, Spain
Good luck with the repair Tom!

Let us know when fixed!

Take care


Javier - Madrid, Spain - Commander of Speedy Marmots Bomb Squadron
www.speedymarmots.com
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