JimR

It's time to start ordering parts. I've done something like this for the A6, time to do it for the A8. I'd like any comments on this you have, and will update this post from time-to-time with edits based on your input. I'll add a post in the sub-thread below when I edit this, so if you've got the thread tracked, you'll be alerted to the updates.

A8 (D2) 4.2 32V (ABZ) Timing Belt Replacement

Must do items - parts list.

Timing Belt
--------------------------------------
Timing Belt
Timing Belt Idler Pulleys (2)
Timing Belt Tensioner
Timing Belt Tensioner Pulley
Timing Belt Damper
Harmonic Balancer Bolt
Four cams seals
Body Pin (what is this - from Ski's list)


Water Pump
--------------------------------------
Water pump
Water pump gasket
Thermostat
Thermostat gasket
(Red) Pentosin coolant

Other items to consider - parts list

Serpentine Belt
--------------------------------------
Serpentine Belt
Serpentine Belt Tensioner


Seals
--------------------------------------
front crank oil seal


Hoses
--------------------------------------
Upper radiator hose
Lower radiator hose

Oil Cooler Seals
--------------------------------------
(Need parts list for this last)


Links / References
------------------------------------------------

<a href="https://forums.audiworld.com/a8/msgs/27133.phtml">Waterloo's first A8 TB changeout, on escapA8's car</a>

<a href="https://forums.audiworld.com/a8/msgs/27207.phtml">Mr. Hyde &amp; Igor (Paul &amp; Floris) - follow-up to the above</a>

<a href="https://forums.audiworld.com/a8/msgs/36110.phtml">Serpentine Belt Removal.</a>

<a href="http://www.pccchicago.com/AudiTBtools.html">Huge Waterloo tensioning troubleshooting thread</a>

<a href="https://forums.audiworld.com/a8/msgs/27580.phtml">Ski's parts list</a>

<a href="http://www.audipages.com/Tech_Articles/enginemechanical/tbreplace0.html">Audipages ABZ (32 valve) TB Replacement Procedure</a>
(Note - this was done before the bumper removal procedure in the "Mr. Hyde &amp; Igor" thread was developed)

Thanks for all the groundbreaking, Paul. Hopefully this will be a useful addition to the Audipages procedure, after we polish it up a little.

escapA8

Paul,

I did get all the parts in for the timing belt service. I ended up adding 4 items to your original part list:

2x - 026103085D Camshaft cover oil seals

1x - 4D0807300 Body Pin

1x - N 905 428 01Harmonic Balancer Bolt

I went by the procedure list you've sent me before.

Talk to you soon,

escapA8



Wendy,

I would like to order parts listed below for my 1997 Audi A8 3.7 FWD (Front Wheel Drive).

According to Paul this is a complete list of parts for a timing belt replacement on an Audi A8 4.2 Quattro. He is pretty sure these parts will also fit my car, but suggested to check with you if this list also applies to my car.

Please give me a call at your convenience so you can quote me your most recent prices and I can place an order.

I am looking forward talking to you.

Thank you.
escapA8

Part Number Item List Sale Price Required Qty Extended Cost
077109119E Timing Belt $178.00 $28.95 1 $28.95
077109246B Timing Belt Damper $149.85 $86.25 1 $86.25
077109244A Idler Pulley $97.40 $31.95 2 $63.90
077109243A Tensioner Pulley $157.60 $45.95 1 $45.95
077903137Q Serpentine Belt $88.70 $25.93 1 $25.93
078121113F Thermostat $28.70 $10.50 1 $10.50
077121004H Water Pump $295.45 $64.95 1 $64.95
078121043A Water Pump Gasket Included with water pump

Total $326.43


Wendy,

I would like to order the following parts:

------------------------------------------

2x - 026103085D Camshaft cover oil seals (2 x $2.50)
1x - 4D0807300 Body Pin (1 x $0.82)
1x - N 905 428 01Harmonic Balancer Bolt (1 x $12.30)

Total: $18.12

Adding Illinois sales tax:
US$18.12 Parts + 6.50% Sales Tax = US$19.30

Grand Total: US$19.30.

------------------------------------------

Regards,
escapA8

escapA8

<center><img src="http://pictureposter.audiworld.com/31455/escapa8_serpentine_and_timing_belt.jpg"></center><p>

skiracer

I would definately do the serpentine belt, but I would think twice about the front main crank oil seal. I bought (and still have) a replacement seal. I decided that upon inspection the original seal looked 100%, and past experience has taught me that removing and replacing these can cause more problems than it solves (easy to scratch or otherwise damage the sealing surfaces, at which point you are doomed). If your front main isn't leaking, I wouldn't replace it.

JimR

and he says the same thing, that he wouldn't do the crank seal unless it was showing signs of leakage. He said he just doesn't see that as a common problem at all.

PaulW

Do this first, then pick up the TB procedure.<ul><li><a href="http://www.audipages.com/Tech_Articles/Body/frontendremoval.html">Front End Removal Procedure</a></li></ul>

JimR

If you owned my car, were going to own it for a while, and if you were about to open it up to do a TB, would you do a pre-emptive replacement of the oil cooler connections (plastic pipes and O-rings)?

PaulW

Takes 1.5 hours once the front end is off and you've got the TB covers off. All you do is unbolt it and bolt it back up (too bad it's not that easy, but almost).<ul><li><a href="http://www.audipages.com/Tech_Articles/enginemechanical/oilcoolerremovalreinstall.html">http://www.audipages.com/Tech_Articles/enginemechanical/oilcoolerremovalreinstall.html</a</li></ul>