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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: 21213
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: 1066
Loc: Southern Illinois
Yes, same principle.
_________________________
2014 RAM Express 3.6/8 speed work truck.
2012 Equinox 2.4-Wife's Ride


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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: 10993
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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12 Accord LX 36K PP 0W-20
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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: 445
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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2001 Chevy Camaro 5.3L/4L65E, Former V6 car
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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: 10993
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.
_________________________
12 Accord LX 36K PP 0W-20
09 Forester 67K PU 5W-30
02 Accord 144K GOil 5W-30
01 Focus ZX3 107K Meijer Syn 5W-20
95 BMW 318iC 150K Defy 10W-40

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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: 1066
Loc: Southern Illinois
My bad.....thinking backwards. Fluid,if anything should rise. Yep.
_________________________
2014 RAM Express 3.6/8 speed work truck.
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: 914
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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'11 Toyota Avalon
'11 Toyota Corolla
'10 Honda Civic
'13 Ford F-150 Supercab 5.0

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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: 21213
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: 914
Loc: Houston, TX
Yes, the boot on the slave cylinder was full of fluid.
_________________________
'11 Toyota Avalon
'11 Toyota Corolla
'10 Honda Civic
'13 Ford F-150 Supercab 5.0

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