corsa 1.3 cdti - corsa 1.3cdt oil seal centering pin EN 46775 - xluvyou

HELP, I have replaced the timing chain on my sons 1.3cdti & after a while the crankshaft oil seal started leaking, I have now replaced the seal twice making sure the cover was correctly located on the dowels (thinking this must line everything up), after reading a Haynes manual I notice mention of a centering pin tool part no. . EN 46775, but no one seems to sell it, vauxhall or motorfactors, & I cannot see it mentioned on any help forum. The only other mention of it is on the Ruville website. obviously many of you will have done this job, what am I doing wrong?, thankyou for all advice. Bill

corsa 1.3 cdti - corsa 1.3cdt oil seal centering pin EN 46775 - focussed

Check first that the crankcase breather is not blocked and there is not excessive crankcase pressure.

I have been in this situation before when replacing crankshaft oil seals on behalf of a manufacturer on new diesel engines. The leaking seal would be replaced with a new seal, making sure that the new seal was pressed in square with the housing, there were no leaks around the outside of the seal, using a sealant if needed, the seal land on the crankshaft was not cut or worn, the lips of the seal were lubricated-everything was correct, but they still leaked when reassembled and tested.

The unofficial solution I came up with was to carefully remove the tensioning spring which is a bit like a minature piece of curtain wire, find the join where one end is "screwed" into the other, unscrew it, you will find one end has a slight pointed end which screws into the plain end to form a loop. Shorten the plain end by about 10 mm by cutting with side cutters and rejoin the spring to form the loop, this increases the pressure on the oil seal lips on to the rotating shaft .Refit this spring to the seal and fit the seal in the normal way.

A short time after this the manufacturer changed the part number of the seal so something was definitely wrong.

Try practising this on one of the old seals you have taken out first.

corsa 1.3 cdti - corsa 1.3cdt oil seal centering pin EN 46775 - xluvyou

Hi focussed, the breather was the first thing I checked, shortening the seal spring is a great idea, thankyou. Could the oil pressure relief valve be causing over pressure even though the breather is clear? There doesn't seem to be any of complaints re this oil seal on any forums. I still cannot understand why the "oil seal centering tool" is used in the Haynes manual but is unavailable? thankyou again, Bill

corsa 1.3 cdti - corsa 1.3cdt oil seal centering pin EN 46775 - focussed

I don't understand why a special tool is mentioned either if the cover that the seal is mounted in is dowelled, unless the tool is used to line the seal up with the crank as the cover is fitted before the dowels engage.

Is it possible that the tool mentioned is a sleeve to protect the lips of the seal as the seal is slid over the start of the land on the crank?

If you suspect that the oil pressure is too high, check it with a manual gauge but a common or garden lip oil seal should be able to cope with any amount of oil, it's usually when they are run dry that they can give problems.

If the seal runs on the crank land make sure the land is undamaged, if it's running on a land or collar that is attached to the crank pulley think about whether the oil can be leaking out from between the shaft and the pulley land, if so is sealant needed on assembly?

I owned one of these once but never got to work on it.

corsa 1.3 cdti - corsa 1.3cdt oil seal centering pin EN 46775 - xluvyou
corsa 1.3 cdti - corsa 1.3cdt oil seal centering pin EN 46775 - xluvyou
Hi again focussed
corsa 1.3 cdti - corsa 1.3cdt oil seal centering pin EN 46775 - focussed

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