Leaking Oil: Cranks Seal

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Nov 24, 2017 | 05:25 PM

tbuchan

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Junior Member

Joined: May 2011

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Leaking Oil: Cranks Seal

Hello, I have my old 1993 240 Wagon and it started leaking oil.

They diagnosed it to be the crank seal leaking.
Is this the same as the crankshaft seal?

Any information would be great.

Thanks

Nov 24, 2017 | 11:03 PM

lev

Senior Member

Joined: Oct 2010

Posts: 4,540

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yes, or rear main seal. have to take out the tranny to change it. you may want to make sure the crankcase ventilation is not plugged up creating pressure that blew the seal.

Nov 26, 2017 | 09:21 PM

pierce

no mo volvo

Joined: Oct 2010

Posts: 11,289

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From: 37 North on the left coast

there's a crank shaft seal on both ends of the motor, the front one is behind the crank pulleys, while the rear one is between the engine and transmission.

Nov 27, 2017 | 12:47 PM

fsh2

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Joined: Jan 2016

Posts: 8

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Yes, my front crank seal leak was caused mainly by increased crankcase pressure resulting from PCV system malfunction, not a bad seal. In that situation, you can replace the seal and the leak will continue.