Troubleshooting diff locking...please help

[Michael Williams <urquattro@surfree.com>]

hey all, i just updated the diff lock system on my UrQ, and i dont know 
how long ago it was that the diffs were locked at all...

Anyway, everything is hooked up right, its getting vacuum, but the center 
diff wont lock.  I had it up on 4 jack stands, and let it sit in gear for 
a while and tested the locks, when i would put it to position 1, nothing 
would happen, when i put it to position 2, which would cause both to 
lock, only the rear would lock.

I know that it (the center diff) is getting vacuum as when i move the 
little knob, i can hear the vacuum hissing out...so what could it be?  I 
suppose that the actuator could be frozen, but what is the best way to 
fix that?

It still has the old style actuator where the cable from the rear 
activates the front...

i know that the center diff actuator works, the one mounted on the tranny 
as i tried to force it to lock manually last weekend.  I could move it 
from that part, but i couldnt get the rear part to budge...maybe that is 
the problem?  Should i wd-40 it or something?


thanks in advance...

later...

Michael Sheridan Williams
ICQ# 11740998
1983 UrQuattro, MC--1.8 BAR, borla, 16x7.5 OZ Mito's w/ SP8000's, K&N
1985 4000S Quattro miles, Koni Yellows/Coilover (2B), strut brace, Sport 
8000 Tires, K&N
http://members.aol.com/daserde2