Thread: URGENT O-RING ON CRANKSHAFT BEHIND GEAR

For Mr Taz : The o-ring fits behind the inner seal, in the cavity of the crank pulley,as it sits up against the shoulder of the crank nose. It prevents oil migrating along the nose of the crank, between it and the crank pulley. Even though it's a close fit on the nose of the crankshaft, it is preferable to keep the pulley dry and tight.

Anyone ever come across a metal "ring" where the crank oil seal goes in? The existing oil seal number is INC 53382 and is definitely different from the ERR4575 oil seal that most 300 Tdi's take.

Any ideas?

Originally Posted by justinc

ERR 4575 is the crank seal, ERR4576 is the outer timing case seal to balancer.
An Oring from a Toyota Hilux/ cruiser etc Diesel fuel filter sensor will fit. Use a little sealant too if you like.
I use the crank gear (reversed and slid down the crank) to push the seal in square. Use the crank bolt and washer with some spacers and screw it in.

Be very careful that the bore where the seal fits is undamaged during the seal removal process. Don't ask me HOW I know about this....

JC

merry christmas jc

Are you referring to the seal in the outer timing cover?I seem to remember a kind of two part seal,like a metal to metal rubbing surface....replaced it with an ERR4576 a normal looking seal that is installed 'backwards' to exclude dust and water.The inner seal behind the crank sprocket was replaced with the ERR4575.