Kobe/FES shaft seal

[salamander]

I've just rebuilt a small FES Kobe. There was a spacer sandwiched between the shaft seal sleeve and the coupler. Some tell me this is important; others say it is unnecessary. Can I just use a split lock coller (like the small Frick's) to prevent the sleeve from sliding out; or am I missing something here.

[Gingerair]

Hi Salamander
Not familiar with your type of compressor or the spacer that you decribe.
Sometimes sleeves are used to repair shafts that have been damaged/grooved by wear, overheating etc.
Have you got rebuild instructions ?
You need to check that you've got the correct ammount of compression of the shaft seal.
Ginge

[CanadianIce]

I believe this spacer keeps the seal assembly firmly seated in the lip seal, so yes it would be important.

C Ice

[McFranklin]

CanadianIce is correct, it is important.
It is there to keep the seal seated.