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| D2 - Transmission Gearboxes, diffs, drive shafts. |
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#1
7th July 2021, 10:45 PM
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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…
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 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. 
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#2
8th July 2021, 05:57 AM
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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.
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#3
8th July 2021, 08:33 AM
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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.
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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
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#4
8th July 2021, 08:10 PM
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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
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#5
8th July 2021, 08:52 PM
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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...
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#6
8th July 2021, 09:38 PM
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Crankshaft seal? Or they never fail?
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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
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#7
8th July 2021, 09:47 PM
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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.
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#8
9th July 2021, 09:59 PM
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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
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