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Quick question on clutch piston seal orientation

Started by wirehairs, May 21, 2016, 02:46:35 PM

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wirehairs

93 FJ1200 ABS.  Replacing the original clutch line with a SS one and figured I'd replace the piston seals.  I think the middle seal shown here should be flipped around.  Am I correct?  Neither of my 2 manuals show a good pic of it.


FJ1100mjk

Quote from: wirehairs on May 21, 2016, 02:46:35 PM
Replacing the original clutch line with a SS one and figured I'd replace the piston seals.  I think the middle seal shown here should be flipped around.  Am I correct?

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FJmonkey

Yep, its on bassakwards. I just took mine apart and the cup is facing towards the fluid, away from the dust seal. Well, it was really one that came off my '89 and it sitting in my parts box. As a general rule the open end of a seal faces the fluid. Imagine as pressure increases it expands the cup getting a stronger seal.
The glass is not half full, it was engineered with a 2X safety factor.

'86 Ambulance - Bent frame, cracked case, due for an overhaul
'89 Stormy Blue - Suits my Dark Side

wirehairs

Thanks.  I figured it was wrong, so I'm glad I asked.