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#3279744 - 02/12/14 05:45 PM Clutch Master cylinder fluid level drop normal?
Drew99GT Offline


Registered: 10/11/02
Posts: 21505
Loc: Colorado Springs
Is it normal for the fluid level in a clutch hydraulic system to drop as the friction material on the pressure plate and disk wear away with usage, similar to what happens with the brake fluid level in cars as the pads wear?

Thanks!


Edited by Drew99GT (02/12/14 05:54 PM)

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#3279758 - 02/12/14 05:57 PM Re: Clutch Master cylinder fluid level drop normal? [Re: Drew99GT]
oldhp Offline


Registered: 06/28/12
Posts: 1188
Loc: Southern Illinois
Yes, same principle.
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#3279794 - 02/12/14 06:25 PM Re: Clutch Master cylinder fluid level drop normal? [Re: Drew99GT]
fdcg27 Offline


Registered: 09/25/09
Posts: 11998
Loc: OH
The clutch master reservoir level won't drop all that much over the life of a disc in my experience.
If you're seeing much or continued drop, you have a leak.
If it isn't getting worse, don't sweat it.
Just add a little brake fluid as needed.
It won't be much.
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#3279800 - 02/12/14 06:30 PM Re: Clutch Master cylinder fluid level drop normal? [Re: Drew99GT]
clinebarger Offline


Registered: 12/19/13
Posts: 725
Loc: Fort Worth, Texas
The Fingers on the Pressure Plate move out toward the Clutch Slave Cylinder in turn compressing the Slave Cylinder as the Clutch Disc wears, In theory the level should rise a little.
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#3279843 - 02/12/14 06:51 PM Re: Clutch Master cylinder fluid level drop normal? [Re: clinebarger]
fdcg27 Offline


Registered: 09/25/09
Posts: 11998
Loc: OH
But this movement is very small.
The difference in thickness between a new disc and an unserviceable disc is very little, nothing like it is with brake pads.
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02 Accord 144K GOil 5W-30
01 Focus ZX3 112K M1 5W-20
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#3280960 - 02/13/14 04:50 PM Re: Clutch Master cylinder fluid level drop normal? [Re: Drew99GT]
oldhp Offline


Registered: 06/28/12
Posts: 1188
Loc: Southern Illinois
My bad.....thinking backwards. Fluid,if anything should rise. Yep.
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2012 Equinox 2.4-Wife's Ride


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#3281023 - 02/13/14 05:48 PM Re: Clutch Master cylinder fluid level drop normal? [Re: Drew99GT]
Tones Offline


Registered: 11/28/03
Posts: 936
Loc: Houston, TX
I had one start leaking but showed no outward signs. I figured it out by pushing on the boot. It was full of fluid and held a little pressure.
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#3281789 - 02/14/14 10:49 AM Re: Clutch Master cylinder fluid level drop normal? [Re: Tones]
Drew99GT Offline


Registered: 10/11/02
Posts: 21505
Loc: Colorado Springs
Originally Posted By: Tones
I had one start leaking but showed no outward signs. I figured it out by pushing on the boot. It was full of fluid and held a little pressure.


The boot on the slave cylinder?

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#3340943 - 04/12/14 07:21 PM Re: Clutch Master cylinder fluid level drop normal? [Re: Drew99GT]
Tones Offline


Registered: 11/28/03
Posts: 936
Loc: Houston, TX
Yes, the boot on the slave cylinder was full of fluid.
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'10 Honda Civic
'13 Ford F-150 Supercab 5.0

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