Timing belt idler pulley (4kq)

[Fred Munro]

I'm reaching back into the dim recesses of my memory here (from the days
long ago when I owned a '86 5ktq) but if this idler pulley is the same as
that on the old I5 10V turbo, there is an easier way to get the pulley off.
If you look closely at the idler pulley, you'll note that the bolt is
smaller diameter than the hole in the pulley and the hole in the pulley is
threaded. You can match up a bolt to the threaded section. This gives you a
couple of removal options. You can insert the bolt through a plate that is
held away from the block on standoffs, thread the bolt into the pulley, and
remove it that way. I think I slid a short piece of rod into the hole for
the bolt to bear on, and extracted the pulley by threading in a bolt.  The
new pulley goes in easier if you leave it in the freezer for a few hours and
drive it in while it is cold. Don't try to pull it in with the bolt or
you'll snap off the bolt.

HTH

Fred Munro
'94 S4


-----Original Message-----
From: quattro-bounces at audifans.com
[mailto:quattro-bounces at audifans.com]On Behalf Of Chris Semple
Sent: March 16, 2005 3:20 PM
Cc: 'Audi quattro list'
Subject: RE: Timing belt idler pulley (4kq)




> -----Original Message-----
> From: quattro-bounces+chris=force5auto.com at audifans.com
> [mailto:quattro-bounces+chris=force5auto.com at audifans.com]On Behalf Of
> Aaron Jongbloedt

> Sorry, I miss understood you.  I used a 3-jaw gear puller
> from Sears.  Put
> that bolt back in part way and use the gear puller to pull it off.
> aaron...

I'd be wary of this approach, that bolt is very thin(m6?), and won't take
much torque before shearing off in the oil pump housing. Try and lever the
idler roller off with two prybars first if you've got the option. They
usually jump off with a little coaxing.

-Cheers
Chris Semple
Concord NH
'92 S4, 124k
   '93 E350 Club, 301k
      '04 F350 DRW, 33k






> > Aaron....the bolt that holds the pulley to the motor is out already,
> > but the pulley assy. is still stuck in place,seems I need
> some sort of
> > puller and its not covered in the Bentley or Haynes...

> > > > whats the trick to remove the idler pulley on my 4kq?
> Im changing the
> > > > timing belt and want replace the bearing in the idler
> pulley while
> > > > i've got it all apart. Couldn't seem to get it to come
> loose at all? I
> > > > got the bolt that holds it on off, but the damn thing
> is stuck on
> > > > there pretty good. This is the first t-belt the cars
> EVER gotten so
> > > > everthing was nice and snug and happy where it was for
> the last 18+
> > > > years....sigh
> > > > Help?
> > > > Shawn

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