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how easily should the bowden cable move?

hey all, im working on fixing the center diff problem.  It appears that 
the actuator itself is ok, but the cable seems VERY hard to move.

I have unfastened the diff actuator assembly from the rear diff and am 
playing with the center diff actuator.  If i pull HARD on the cable it 
will lock the center diff.  If the car is on, in neutral, and i pull hard 
enough to lock the diff, it will stay locked with the vacuum of the car, 
but it wont engage on its own...

i tried squeezing the plastic bracket that gets pushed to lock the diff 
with one hand, and knowing that my grip can produce around 80lbs of force 
or so, i could just barely move the cable, it required that i gripped 
with both hands....

or if i pulled on the cable itself to get the whole thing to move, it 
would require most of my effort of the equivelent of a "lat pull down" 
excersise to actuate it.

I imagine that this would be the symptoms of a near frozen cable...

Question, is there a way to get this thing to move more easily?  I really 
dont want to have to buy a whole new one, i just bout about 350 dollars 
worth of parts to redo the shift linkage, coolant stuff, etc etc....

anyone?  would just spraying wd40 on the end get enough in there to 
possibly lubricate it??

maybe at each end?  I would imagine that the areas causing the most 
resistance are toward each end as those are the places that get subjected 
to the elements the most.  So i hope, maybe, that if i were to lube those 
2 places, it just might be enough...

anyone btdt?

thanks in advance


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