'86 4kq diff locks/Propshaft

[R Mangas]

  Front actuator is behind a shield right behind the passenger halfshaft;
easiest way to spot it is to look for paired hoses to the bellhousing in
front of the firewall, passenger side of car.

  The actuator won't be hurt by driving with diffs locked on the dry, but
other stuff might.

  Dunno where the switches are; on both of my cars the problem was leaky
actuators and/or cracked old hoses.  Verify light function by moving the
actuator rods by hand- rear is on the drivers side of the pumpkin, front is
at the rear of the tail housing, up on top.  Both should move pretty easy,
on my '86 the rear was stiff but the front was very free.  Working the stiff
one a bunch of cycles by hand freed it up enough to function.

hth,
Robert




>From: rizov_d at shaw.ca
>To: "frank j. bauer" <frankbauer at thevine.net>
>CC: quattro at audifans.com
>Subject: Re: '86 4kq diff locks/Propshaft
>Date: Tue, 11 Mar 2003 08:34:39 -0700
>
>[ Converted text/html to text/plain ]
>
>
>
>I've been under the car with no means to locate front actuator.
>
>Any particular place to look or photo, or drawing?
>
>Swithes are located on the right-hand side of the transmission. Who is who?
>
>Is the access to the actuator on the right side as well?
>
>What are chances to have broken actuator?
>
>After cornering with locked diff with high speed on dry surface?
>
>Thx,
>
>Dobby
>
>----- Original Message -----
>
>From: "frank j. bauer" <frankbauer at thevine.net>
>
>Date: Tuesday, March 11, 2003 1:53 am
>
>Subject: Re: '86 4kq diff locks/Propshaft
>
> > At 06:43 PM 3/10/2003, Huw Powell wrote:
> > >>How diff locks look like?
> > >
> > >the diff locks are little actuators on the side of the tranny (front
> > >left, sort of) and the rear diff.
> > >
> > >Actuated by vacuum, they also close a switch to light up your
> > display.
> > actually, there are separate switches that will activate the lights.
> > the actuator moves the diff lock mechanism and the locking action
> > closesthe switch.
> >
> > so there are 2 things to check:
> > - if you activate the diff lock and drive in a tight circle on dry
> > pavementyou will know if it is locked.
> > - if it's not locked, it's the vacuum supply (most likely a
> > cracked rubber
> > hose somewhere) or the actuator (which can easily be tested by
> > applyingvacuum to either side)
> > - if it is locked and the light is not on the switch needs replacing.
> > you can manually activate the diff lock to test the switch and
> > indicatorlight function.
> > make sure it's not a wiring/connection issue before you replace a
> > switch.(there are 3 similar-looking switches on the trans/diff
> > that are for
> > reverse, 5th, and center diff lock indication)
> >
> > frank
> >
> >
> >


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