Regreasing Dura Ace 7400 Sti

[Johnsqual]

Hello,

I'm working on a Dura Ace 7400 set up with STIs. The left hand shifter was sticking badly, I think because of dried up grease in the mechanism. The upshift arm stayed at 90 degrees to the body. I sluiced the shifter through with WD-40 and left it to soak overnight. A load of nasty looking old grease dripped out, and the mechanism now seems to work again - hooray.

However, does anyone have any idea about how to regrease the internals? There are a few springs and bits visible on the outside of the sti, but I'm not sure whether/how to grease the internals. Would it be a good idea to rinse it through with penetrating oil before greasing (or even instead of greasing)?

Thanks for any tips - I haven't really worked on Dura Ace stuff before.

Cheers,

Johnny

 

[oonaff]

good question, ive thought about. common sense would seem to say ptfe grease of today.
but not sure if ordinary 3in 1 oil or fine machine oil would last and be just as good and make for ultra slick shifting.?my ult' 8s are tired i was just going to give them teflon spray now and again but will wait and see what other's say. thanks