Lister 8-1 Crankshaft Felt/Slinger installation

[jimboz]

Does anyone know how this system is supposed to work? 

• Does the slinger slightly touch the felt?
• Do the convex portion/portions ride under the felt?
• Does the entire slinger ride under the felt?

Thanks.

[38ac]

Not supposed to be any felt there, nothing but the slinger. Your slinger looks odd for some reason I cant put my finger on it, maybe worn away from riding on felt previously?

[jimboz]

38,

here's a pict from the Lister Diesel Types 6-1. 8-1, 12-2 & 16-2 Instruction manual.

It clearly shows the slinger and felt and each item is called out in the bill of materials, what makes you think it's not supposed to be there?  Additionally, there were felts in the housings when i disassembled it.



thanks,

[38ac]

Well I'll be hanged, your right. Sorry for the incorrect information. That felt has never been in any CS I have had down in the shop, Amish modifications apparently? They dont leak without them I know that because i have never used them.

[Combustor]

            Haven't had my 8/1 or VA bottom ends apart to look for felts, but many earlier machines had such felt rings in recesses round the shafts, is it possible that
the parts illustration shows the felt separately, but it actually fits in the housing recess as Jimboz describes. I seem to recall having quite some trouble compressing felt into grooves on other early motors including SR's and ST's, though these could be changed for ordinary seals.   Combustor.

[dieselgman]

The felt seal fits inside a groove cut into the bearing housing. The oil slinger runs inside that seal.

dieselgman

[Blue]

It's a lot easier to do properly with the housing removed. 

[dieselgman]

Affirmative on that... I don't see how you could possibly stuff the felt without first pulling the housing.

dieselgman

[jimboz]

Yes, I took a closer look and the flat surface of the slinger rides under the felt and the slinger grooves sling the oil into another void which then drains back to the sump.  Additionally, i saw somewhere that lister tries to run a negative pressure in the crankase to keep oil from leaking out, which is probably the purpose of the felts, so if you're not running with felts and have excessive oil leaks you might consider running with felts.