Clutch Question
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Mountain Pass
Joined: Jun 2016
Posts: 207
Likes: 21
From: West Tennessee
Clutch Question
I bought an '88 f-150 302, 5 speed. Question is I need clutch fluid refilled and when I took the master cylinder cap off I found a rubber cup inside ... Do I fill the cup or take it out to fill it ... How does that work, it's my first hydraulic clutch ... Thanks in advance for your help
Hotshot
Joined: Jul 2020
Posts: 10,471
Likes: 2,633
From: Near Salt Lake City
I have been known to cut the bottom of those rubber cups off so there is more fluid in there
Don't much care much if a small amount comes out the cap vent when up wheeling in the mountains or on rough terrain
Don't much care much if a small amount comes out the cap vent when up wheeling in the mountains or on rough terrain
Hotshot
Joined: Jun 2015
Posts: 12,837
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I’ll pass on that modification. I don’t want brake fluid dripping all over the paint and frame.
Cargo Master
Joined: Aug 2021
Posts: 2,258
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From: Maryland
Yes aka diaphragm.
Hotshot
Joined: Jul 2020
Posts: 10,471
Likes: 2,633
From: Near Salt Lake City
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Tuned
Joined: Aug 2010
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What is the purpose? Is it to require more vacuum for the fluid so it doesn't dispense as much?
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5th Wheeling
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I've always wondered what that cup did, I just assumed it acted like a baffle and kept the fluid near the inlet of the master cylinder.
Have you been needing to add fluid to your system a lot? Might be time for a master and slave cylinder job
Have you been needing to add fluid to your system a lot? Might be time for a master and slave cylinder job
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