Hi,
In the middle of the cam belt/waterpump and seals job on my Eunos 1.6. On removing the front crank seal ( carefully ) , I saw that surface of the shaft under seal looks scored / damaged …
Is this normal ? - the cam shafts had a nice mirror finish under the seals . If not, is there something I can do - maybe clean with P2500 paper and water ?
Any suggestions very welcome …
Thanks.
That is definitely not right? The lip of the seal fits against this face and I guess it wouldn’t last long based on your picture? That’s a real shame as the woodruff keyway looks perfect? Not sure there’s much that can be done with crankshaft in situ?
Was it leaking badly prior to dismantling?
Barrie
EDIT;
having said all that, have a look here?
Curious thing is no, I didn’t have a bad oil leak . When I disassembled I noticed two things - one was a few drops just under the seal ( which is why I decided to replace ) and secondly some old oil and dust ( as a black gunge ) in the undertray. But there has never been an oil leak under the car on the garage floor and the level hasn’t budged. I’ve done 4K km since I bought it.
Hmm… Those scores look like something hard and sharp was trapped in there briefly, perhaps some snapped reinforcement wires shed from a damaged cam-belt?
Just a thought…
I do like that SKF sleeve idea, brilliant!
OK, had a cup of tea, and reread the link you sent ( Thank you ) . After a quick surf , I found someone has already tried this with success ( http://www.mx5nutz.com/forum/index.php?showtopic=343553&p=4132529 ).
As this surface looks badly worn , as you say, this may be a good route.
Do you know if the 1991 1.6 will have the same shaft diameter as 1.8 in the mx5nuts article ?
… Have to admit I am a little nervous at the prospect of attempting this .
OK, I thought I would post my progress on this …
I ordered a speedi-sleeve ( size 99144 ) . This comes with a “cup” for inserting with a mallet ( right ) . However, this wouldn’t work for me, so I asked our Mech Engineer at work to 3D-print a spacer , just wider that the sleeve and 45mm long (left).
I also purchased some Loctite 920, for sealing the installation ( as recommended on their site ).
First job was to make sure I had the right size ( just in case )
Next job was add the Loctite - couldn’t work out how to get an even spread on the shaft ( considering it was still in the car ) , so added it to the inside of the speedi-sleeve.
Next used the printed spacer and the flange/crank bolt and wound it into place. The mistake I made was not making a inspection hole in the spacer, so I had to keep stopping, checking and then try a little more. Also I was not ready for the horrible creaking noises the sleeve makes as it is forced to expand over the shaft.
Finally, all installed
I decided to leave the “tear off” flange on the sleeve - this clears the back by 2mm and should not foul the seal in front.
Thanks Bettabuilda for the suggestion.
Now to get the cam belt back on… every day something new
Just caught up with this, been away. Glad it’s been of use to you? Hopefully, this has sorted your problem.
Barrie