4kq diff lock vacuum lines

[Denis]

  On my 500TQ 1987

  The front lock diff air lines goes from air switch in the dash to the
helper feet under carpet ;-). then 2 hoses, one red one green. Those hoses
cross the body on the upper left side of helper side feet.
  The vaccum unit is upper left from the help CV joint(helper side). hard to
access there. Three 13mm bolts hold it there on tranny. Mine got one plastic
plug broken.

  The long steel rod maybe rusted, I replace it with a SS rod.

  Be careful when remove the vaccum unit, rust break the plastique on small
screws.

  For the rear lock:

  The lines goes from the switch and root under the carpet on the driver
side on the tunel until the rear. Then cross the body on the right foot of
the rear , driver side. Two hoses again.
  The vaccum unit is located on the driver side of the rear diff.

  Denis

  I can send you a scanned plan for vacum sysstem on Bentley manual, i you
need it


  ----- Original Message ----- 
  From: "Steve Arbaugh" <sneekerz at comcast.net>
  To: "Quattro List" <quattro at www.audifans.com>
  Sent: Friday, January 02, 2004 8:08 PM
  Subject: 4kq diff lock vacuum lines


  > Ok, so now that there's snow on the ground here in Seattle, I figure
it's
  > time to figure out why my diffs don't lock (great timing, eh?). I can
lock
  > the center diff by crawling under and pushing the rod back and forth,
but
  > that's not really convenient while driving down the road. The light on
the
  > panel comes on like it's supposed to when it's locked. What I can't seem
to
  > find are the vacuum lines that are supposed to make this thing work
  > automagically. Where on the lock actuator are the lines connected? And,
  > where do they come from (from somewhere under the hood or ???)?
  >
  > I haven't even looked at the rear locker yet, so any insight will be
gladly
  > accepted. I also haven't been to the back side of the switch yet because
I'
  > ve never figured out how the bits of the console come out, the ones with
the
  > window switches then the one with the diff lock switch.
  >
  > Why did they put a catastrophic converter right in my way???
  >
  > Steve
  > '86 4kq
  > '86 5ktqa (with working diff locks)
  > kent, wa
  >
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