A8 Parts Forum  

Go Back   A8 Parts Forum > A8 D2 > D2 - Transmission

D2 - Transmission Gearboxes, diffs, drive shafts.

Reply
 
Thread Tools Display Modes
  #1  
Old 7th July 2021, 10:45 PM
Zip's Avatar
Zip Zip is offline
Senior Member
 
Join Date: Jan 2009
Posts: 655
Unhappy What preventive maintenance to do while gearbox out?

My transmission has finally gone pop. I’ll run some codes off, but was wondering what I should get done with the improved access to the back of the engine bay that is afforded by the removal of the box? Happy to do whatever preventive maintenance necessary.

Does anyone have a list please?

Cheers,
Zip

PS. If you’re interested, moving from neutral to drive after a 100mile drive, massive thump, initially thinking that someone had driven into me, then almost undriveable slipping as I pull away. No problem in reverse. Managed to get to my destination. Still a mild thump moving box into gear, then massive slipping until moving. Suspect clutch drum A has gone bang…
__________________

2002 D2 S8: Ebony Black over Platinum. A8L Comfort front seats in black (), heated rear seats, extended Leather Pack 3, blinds, glass sunroof, MFSW, Dension Gateway 100 for iPod, ski-hatch, xenon plus, auto dimming mirrors, 20" FE wheels, billet aluminium 'brake block', gunmetal Brembo calipers

2005 B6 S4 Cabriolet: Ebony Black Pearl over Silver. RNS-E, Bose, heated seats, cruise control, retrofit aux-in, centre armrest, Milltek resonated exhaust

Last edited by Zip; 7th July 2021 at 11:03 PM.
Reply With Quote
  #2  
Old 8th July 2021, 05:57 AM
MikkiJayne MikkiJayne is offline
Senior Member
 
Join Date: Jan 2012
Location: Devon
Posts: 4,552
Default

Ah poop. That does sound like the clutch drum or the thrust bearing in front of it.

Really the only thing back there is the bottom of the scuttle drains, so you can get a piece of hose pipe attached to a vacuum cleaner up there.

Its marginally easier to get to the power steering pipes, should they need attention, but that's not particularly difficult with it all together either.
Reply With Quote
  #3  
Old 8th July 2021, 08:33 AM
sarg sarg is offline
Senior Member
 
Join Date: Dec 2010
Location: West Northamptonshire
Posts: 1,841
Default

Sounds exactly hoiw my 4.2 QS behaved back in the day when its gearbox gave up.

I can't help with the maintenance, other than giving it all a good clean. Good luck with the repair.
__________________
2002 Mark's D2 S8 FE
2020 BMW M340d xDrive (Anely's daily driver)
2018 BMW M4 SOLD 2021
2015 Mini Cooper S John Cooper Works (Anely's Mini #3) SOLD 2021
2016 Mercedes-AMG C63 SOLD 2018
2014 BMW X5 3.0d M Sport SOLD 2017
2009 BMW M3 DCT - SOLD 2015
2010 Mini Cooper S Auto (Anely's Mini #2) - SOLD 2016
2002 Porsche Boxster Tiptronic S - SOLD 2013
2000 FL D2 4.2 QS - SOLD 2011
Reply With Quote
  #4  
Old 8th July 2021, 08:10 PM
Zip's Avatar
Zip Zip is offline
Senior Member
 
Join Date: Jan 2009
Posts: 655
Question

Is the dreaded oil cooler pipe back there? Any hoses likely to have perished?

Nearly 14 years and 100k miles (in my hands…now on 155k), and I can’t complain…it doesn’t owe me anything. Only one transmission oil change in that time…

ZIP
__________________

2002 D2 S8: Ebony Black over Platinum. A8L Comfort front seats in black (), heated rear seats, extended Leather Pack 3, blinds, glass sunroof, MFSW, Dension Gateway 100 for iPod, ski-hatch, xenon plus, auto dimming mirrors, 20" FE wheels, billet aluminium 'brake block', gunmetal Brembo calipers

2005 B6 S4 Cabriolet: Ebony Black Pearl over Silver. RNS-E, Bose, heated seats, cruise control, retrofit aux-in, centre armrest, Milltek resonated exhaust
Reply With Quote
  #5  
Old 8th July 2021, 08:52 PM
MikkiJayne MikkiJayne is offline
Senior Member
 
Join Date: Jan 2012
Location: Devon
Posts: 4,552
Default

The oil cooler pipe is at the front, between the alternator and the block.

Hoses is a good idea actually - its possible to get to the header tank hose and the two heater core hoses while the box is out so might be worth inspecting them. Getting more is a challenge of course...
Reply With Quote
  #6  
Old 8th July 2021, 09:38 PM
ainarssems ainarssems is offline
Senior Member
 
Join Date: Aug 2010
Location: Rushden, Northants
Posts: 3,686
Default

Crankshaft seal? Or they never fail?
__________________
Currently 8less
2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D

8 history:
2006 A8 Sport 4.2TDI quattro SOLD,
1997 S8, reached end of life with gearbox failure
Reply With Quote
  #7  
Old 8th July 2021, 09:47 PM
MikkiJayne MikkiJayne is offline
Senior Member
 
Join Date: Jan 2012
Location: Devon
Posts: 4,552
Default

Very rare that the rear crank seal leaks, although not unheard of. Usually oil down the back of the engine is from the valley gasket.
Reply With Quote
  #8  
Old 9th July 2021, 09:59 PM
Zip's Avatar
Zip Zip is offline
Senior Member
 
Join Date: Jan 2009
Posts: 655
Thumbs up

Thanks for your advice, all.

It’s going to Stephens Engineering in Ware. They know these boxes well.

Zip
__________________

2002 D2 S8: Ebony Black over Platinum. A8L Comfort front seats in black (), heated rear seats, extended Leather Pack 3, blinds, glass sunroof, MFSW, Dension Gateway 100 for iPod, ski-hatch, xenon plus, auto dimming mirrors, 20" FE wheels, billet aluminium 'brake block', gunmetal Brembo calipers

2005 B6 S4 Cabriolet: Ebony Black Pearl over Silver. RNS-E, Bose, heated seats, cruise control, retrofit aux-in, centre armrest, Milltek resonated exhaust
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 12:44 AM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.