4kq drivetrain lube change

[Dave Hord]

I pumped using a $3.00 plastic siphon pump.  Just as useful for siphoning gas
out of your fathers vehicle when you're broke...but that's another story.

Man. Trans and center diff share the same fluid resivoir...at least on my Audi
90 quattro..I'm 99% sure the 4kq is the same setup for the drain holes.

MAKE SURE you get the fill plugs out before the drain plugs.  Otherwise you end
up with the unique problem we had with my buddies BMW 318is.  Due to a simply,
yet highly effective, brain fart we pulled the drain plug before the fill plug.
(both were loosened, however).  When we went to pull the fill plug out fully
(remember, it WAS loosened)...it came half out and siezed completely. Wouldn't
come out any further.

It was an interesting day...where I eventually pressure filled the rear diff
with 3.25L of fluid.  I then had to remove the pump and get the fill plug
in...the whole time getting a high-pressure shower of Hypo fluid.  After
measuring the spilled fluid, and squeegying me off...we discovered I had filled
the diff with the exact amount needed...2.5L

Of course, I repelled water for a week...but anyways...

-Dave

---------------------------------------------------
89 90q  300km+ Rally Conversion...
Roll cage shots available at:
http://home.the-wire.com/~spokes/rollcage/page1.htm


Quoting Aaron Ryba <aaronryba at yahoo.com>:

> Easiest way to change man. trans and center and rear
> diff lub on an 87 4kcsq?
> I understand draining the lubricant is quite an easy
> task, however what is the standard proceedure for
> refilling? How accessible are the corresponding trans.
> and diff filler holes?  This hypo diff oil is quite
> thick if I remember and might be a bit hard to be
> pumped through a hose.
> I haven't been under the car in some time and cannot
> remember the accessibility, and Bently has no advice
> on filling techniques.
> Does anyone have some suggestions of refilling
> techniques? I.E. a specific size tubing or hand pump?
>
> Also, do the man. trans. and the center diff share the
> same oil resevior or are they separate, i.e. requiring
> diff drain and fill plugs?
>
> Thanks for any help in advance
>
> Aaron Ryba
> 87 4kcsq 111K
> Cambridge, MA
>
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