2017 Audi A8 Quattro engine fastener tightening specifications

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Condition	Value

expand_moreAir intake system

expand_moreInduction-pipe flap control unit


3.0 TDI quattro with diesel V6 3.0 L 236 HP engine (2012.11–)	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreIntake manifold

expand_moreAll Audi gasoline V8 4.2 L CDRA engines


Lower section of intake manifold	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreUpper section of intake manifold


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Tighten the screws cross-wise from inside to outside.
Second stage	8.11 lbf⋅ft8.11 lbf⋅ft11 N⋅m

expand_moreAll Audi diesel V6 3.0 L CPNA engines


First stage	Tighten by hand
Second stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Third stage	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m


All other modifications	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Tighten in steps from inside to outside.

expand_moreAuxiliary assemblies

expand_moreAuxiliary drive belt deflection pulley


All Audi gasoline V8 4.2 L CDRA engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All Audi diesel V6 3.0 L CDTA engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
All Audi diesel V6 3.0 L CDTB engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
All Audi diesel V6 3.0 L CDTC engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
All Audi gasoline W12 6.3 L CEJA engines	23.6 lbf⋅ft23.6 lbf⋅ft32 N⋅m
All Audi gasoline V8 4.0 L CEUA engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All Audi diesel V6 3.0 L CMHA engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
All Audi diesel V6 3.0 L CTBB engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
All Audi gasoline W12 6.3 L CTNA engines	23.6 lbf⋅ft23.6 lbf⋅ft32 N⋅m

expand_moreAll other modifications


Compressor belt	30.98 lbf⋅ft30.98 lbf⋅ft42 N⋅m
Otherwise	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreAuxiliary drive belt tensioner

expand_moreAll Audi gasoline V8 4.2 L CDRA engines


M10	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
M8	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreAll Audi diesel V8 4.1 L CDSB engines


M10	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
M8	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreAll Audi diesel V6 3.0 L CDTB engines


First stage	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll Audi gasoline W12 6.3 L CEJA engines

expand_moreM10


First stage	23.6 lbf⋅ft23.6 lbf⋅ft32 N⋅m
Use new screw.
Second stage	90°90°90°


M8	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreAll Audi gasoline V8 4.0 L CEUA engines


M10	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
M8	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreAll other modifications


Compressor belt	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Otherwise	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreAir compressor


Nuts	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Stud screws	12.54 lbf⋅ft12.54 lbf⋅ft17 N⋅m


Air-conditioning compressor	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAir-conditioning compressor bracket

expand_moreAll Audi gasoline V6 3.0 L CGWD engines


M10	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m


All other modifications	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreAir-conditioning compressor pressure line


M6	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
M8	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAlternator

expand_moreAll Audi gasoline V6 3.0 L CGWD engines


Nuts	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Screws	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Stud screws	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m


All other modifications	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreGenerator bracket


All Audi gasoline V8 4.2 L CDRA engines	33.93 lbf⋅ft33.93 lbf⋅ft46 N⋅m
All Audi diesel V6 3.0 L CDTA engines	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
All Audi diesel V6 3.0 L CDTB engines	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
All Audi diesel V6 3.0 L CDTC engines	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
All Audi diesel V6 3.0 L CMHA engines	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
All Audi diesel V6 3.0 L CTBB engines	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m


Power steering pump bracket	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreHydraulic lines at the servo-steering pump

expand_moreAll Audi gasoline V8 4.2 L CDRA engines


Screws	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Union nuts	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreAll Audi gasoline W12 6.3 L CEJA engines


Screws	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Union nuts	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreAll Audi gasoline V8 4.0 L CEUA engines


Screws	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Union nuts	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreAll other modifications


Screws	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Union nuts	28.03 lbf⋅ft28.03 lbf⋅ft38 N⋅m


Servo pump pulley	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreServo steering pump

expand_moreAll Audi gasoline V8 4.2 L CDRA engines

expand_moreM12


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Second stage	90°90°90°


M8	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAll Audi gasoline V8 4.0 L CEUA engines

expand_moreM12


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Second stage	90°90°90°


M8	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


All other modifications	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreCarburetion

expand_moreInjection pump drive wheel

expand_more4.2 TDI quattro with diesel V8 4.1 L 346 HP at 4000 RPM, 800 N⋅m at 1750 RPM engine (2009.11–)

expand_moreCentral screws


First stage	55.32 lbf⋅ft55.32 lbf⋅ft75 N⋅m
Replace screws.
Second stage	45°45°45°

expand_moreExhaust gas return cooler


3.0 TDI quattro with diesel V6 3.0 L 236 HP engine (2012.11–)	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreFuel-distributing pipe

expand_moreAll Audi gasoline W12 6.3 L CEJA engines


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Tighten new screws in inside-to-outside order.
Second stage	90°90°90°


All other modifications	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreHigh-pressure line

expand_moreAll Audi gasoline W12 6.3 L CEJA engines


High-pressure side	19.91 lbf⋅ft19.91 lbf⋅ft27 N⋅m
Low-pressure side	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m


All Audi gasoline V8 4.0 L CEUA engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi diesel V6 3.0 L CPNA engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreHigh-pressure pump


All Audi gasoline W12 6.3 L CEJA engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Audi gasoline W12 6.3 L CTNA engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All other modifications	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Replace screws.

expand_moreHigh-pressure pump pulley


Central nuts	51.63 lbf⋅ft51.63 lbf⋅ft70 N⋅m


Injection hoses	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreInjection nozzle (injector)

expand_moreAll Audi diesel V8 4.1 L CDSB engines


Nuts	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreAll Audi diesel V6 3.0 L CPNA engines

expand_moreRetaining clamp


First stage	4.43 lbf⋅ft4.43 lbf⋅ft6 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll other modifications


Retaining clamp	10.33 lbf⋅ft10.33 lbf⋅ft14 N⋅m

expand_moreInjection pump

expand_moreAll Audi gasoline V8 4.2 L CDRA engines


High-pressure pump	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreAll Audi diesel V8 4.1 L CDSB engines


High-pressure pump	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreAll other modifications


At the cylinder head	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
High-pressure pump	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Tighten bolts uniformly in several passes.

expand_morePressure tube connection


High-pressure side	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreCharging

expand_moreCharge air pipes


3.0 TDI quattro with diesel V6 3.0 L 236 HP engine (2012.11–)	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreCharge air compressor


Nuts	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Stud screws	12.54 lbf⋅ft12.54 lbf⋅ft17 N⋅m


Turbo charger	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Replace screws. Use hot screw paste.

expand_moreTurbocharger bracket


3.0 TDI quattro with diesel V6 3.0 L 236 HP engine (2012.11–)	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Tighten cross-wise.

expand_moreCooling system

expand_moreCoolant pump

expand_moreAll Audi gasoline V8 4.0 L CEUA engines


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace screws.
Second stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m


All other modifications	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Gradually tighten screws crosswise.

expand_moreCoolant pump pulley


All Audi diesel V6 3.0 L CDTA engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
All Audi diesel V6 3.0 L CDTB engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
All Audi diesel V6 3.0 L CDTC engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
All Audi gasoline W12 6.3 L CEJA engines	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
All Audi diesel V6 3.0 L CMHA engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
All Audi diesel V6 3.0 L CPNA engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
All Audi diesel V6 3.0 L CTBB engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
All Audi gasoline W12 6.3 L CTNA engines	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreCylinder head

expand_moreCamshaft bearing


All Audi diesel V8 4.1 L CDSB engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
helically from the inside out
All Audi diesel V6 3.0 L CDTA engines	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Tighten in steps from inside to outside.
All Audi diesel V6 3.0 L CDTB engines	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Tighten in steps from inside to outside.
All Audi diesel V6 3.0 L CDTC engines	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Tighten in steps from inside to outside.

expand_moreAll Audi gasoline V6 3.0 L CGWD engines

Figure 1. Cylinder head, Camshaft bearing, Audi gasoline V6 3.0 L CGWD.


First stage	Screw in screw(s) by hand.
Replace screws. See figure 1.

expand_moreSecond stage


First step	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Second step	90°90°90°


All Audi diesel V6 3.0 L CMHA engines	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Tighten in steps from inside to outside.
All Audi diesel V6 3.0 L CTBB engines	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Tighten in steps from inside to outside.

expand_moreAll other modifications

expand_moreBearing casing


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Tighten new screws in inside-to-outside order.
Second stage	90°90°90°

expand_moreCylinder head screws

expand_moreAll Audi gasoline V8 4.2 L CDRA engines

expand_moreScrews 1 – 10

Figure 2. Cylinder head, Cylinder head screws, Audi gasoline V8 4.2 L CDRA, Screws 1 – 10.


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Use new screws. See figure 2.
Second stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Third stage	90°90°90°
Fourth stage	90°90°90°

expand_moreScrews 11 – 14

expand_moreFifth stage


First step	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Use new screws.
Second step	90°90°90°

expand_moreCap screw 6


Sixth stage	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
Replace sealing rings.

expand_moreAll Audi diesel V8 4.1 L CDSB engines

Figure 3. Cylinder head, Cylinder head screws, Audi diesel V8 4.1 L CDSB.


First stage	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace screws. See figure 3.
Second stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Third stage	90°90°90°
Fourth stage	90°90°90°

expand_moreAll Audi gasoline W12 6.3 L CEJA engines

Figure 4. Cylinder head, Cylinder head screws, Audi gasoline W12 6.3 L CEJA.


First stage	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Replace screws. See figure 4.
Second stage	27.29 lbf⋅ft27.29 lbf⋅ft37 N⋅m
Third stage	90°90°90°
Fourth stage	90°90°90°

expand_moreAll Audi gasoline V8 4.0 L CEUA engines

expand_moreScrews 1 – 10

Figure 5. Cylinder head, Cylinder head screws, Audi gasoline V8 4.0 L CEUA, Screws 1 – 10.


First stage	Tighten by hand
Use new screws. See figure 5.
Second stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Third stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Fourth stage	90°90°90°
Fifth stage	90°90°90°

expand_moreScrews 11 – 14

expand_moreSixth stage


First step	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Use new screws.
Second step	90°90°90°

expand_moreAll Audi gasoline V6 3.0 L CGWD engines

expand_moreScrews 1 – 8

Figure 6. Cylinder head, Cylinder head screws, Audi gasoline V6 3.0 L CGWD, Screws 1 – 8.


First stage	Screw in screw(s) by hand.
Replace screws. See figure 6.
Second stage	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Third stage	90°90°90°
Fourth stage	90°90°90°

expand_moreScrew 9

expand_moreFifth stage


First step	2.21 lbf⋅ft2.21 lbf⋅ft3 N⋅m
Replace screws.
Second step	90°90°90°

expand_moreAll Audi gasoline V6 3.0 L CGXA engines

expand_moreScrews 1 – 8

Figure 7. Cylinder head, Cylinder head screws, Audi gasoline V6 3.0 L CGXA, Screws 1 – 8.


First stage	Tighten by hand
Replace screws. See figure 7.
Second stage	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Third stage	90°90°90°
Fourth stage	90°90°90°

expand_moreScrews (M6)

expand_moreFifth stage


First step	2.21 lbf⋅ft2.21 lbf⋅ft3 N⋅m
Use new screws.
Second step	90°90°90°

expand_moreAll Audi gasoline V6 3.0 L CMDA engines

Figure 8. Cylinder head, Cylinder head screws, Audi gasoline V6 3.0 L CMDA.


First stage	Screw in screw(s) by hand.
Use new screws. See figure 8.
Second stage	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Third stage	90°90°90°
Fourth stage	90°90°90°

expand_moreAll other modifications

Figure 9. Cylinder head, Cylinder head screws, All other modifications.


First stage	Tighten by hand
Replace screws. See figure 9.
Second stage	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Third stage	51.63 lbf⋅ft51.63 lbf⋅ft70 N⋅m
Fourth stage	90°90°90°
Fifth stage	90°90°90°

expand_moreValve cover

expand_moreAll Audi diesel V8 4.1 L CDSB engines


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll Audi diesel V6 3.0 L CDTB engines


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Tighten new screws crosswise in inside-to-outside order.
Second stage	90°90°90°

expand_moreAll Audi gasoline V8 4.0 L CEUA engines

expand_moreBearing casing


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Tighten new screws in inside-to-outside order.
Second stage	90°90°90°


All other modifications	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreEngine block

expand_moreBalance shaft gear wheel

expand_moreAll Audi diesel V6 3.0 L CDTB engines


Central screws	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m

expand_moreCentral nuts


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Shaft must be replaced when the screw connection has been loosened.
Second stage	90°90°90°


Wheel	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreAll other modifications


Central screws	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m

expand_moreWheel


First stage	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreConnecting rod bearing

expand_moreAll Audi diesel V8 4.1 L CDSB engines


First stage	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll Audi diesel V6 3.0 L CDTB engines


First stage	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll Audi diesel V6 3.0 L CPNA engines


First stage	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace screws.
Second stage	90°90°90°
Oil screw head support and thread.

expand_moreAll other modifications


First stage	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreCrankshaft pulley

expand_moreAll Audi gasoline V8 4.2 L CDRA engines


First stage	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll other modifications


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreDrive plate

expand_moreAll Audi diesel V6 3.0 L CPNA engines


First stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll other modifications

expand_moreOn crankshaft


First stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Replace bolts.
Second stage	90°90°90°

expand_moreEngine block closure screws


All Audi diesel V8 4.1 L CDSB engines	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
All other modifications	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreMain bearing

expand_moreAll Audi gasoline V6 3.0 L CGWD engines

expand_moreScrews 1 – 16


First stage	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Replace screws.
Second stage	90°90°90°


Screws 17 – 31	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreAll Audi gasoline V6 3.0 L CMDA engines

expand_moreScrews 1 – 16

Figure 10. Engine block, Main bearing, Audi gasoline V6 3.0 L CMDA, Screws 1 – 16.


First stage	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Use new screws. See figure 10.
Second stage	90°90°90°

expand_moreScrews 17 – 31


Third stage	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Replace screws.
Fourth stage	90°90°90°

expand_moreAll other modifications


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace screws.

expand_moreSecond stage


First step	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
first tighten crosswise inside, then outside
Second step	180°180°180°

expand_moreVibration damper

expand_moreAll Audi gasoline V8 4.2 L CDRA engines


First stage	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Replace screws.

expand_moreSecond stage


First step	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Second step	90°90°90°

expand_moreAll Audi diesel V8 4.1 L CDSB engines


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace screws.
Second stage	45°45°45°

expand_moreAll Audi gasoline W12 6.3 L CEJA engines


First stage	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll Audi gasoline V8 4.0 L CEUA engines


First stage	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Replace screws.

expand_moreSecond stage


First step	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Second step	90°90°90°

expand_moreAll other modifications


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreEngine control

expand_moreBottom part of the control unit housing

expand_moreAll Audi gasoline V8 4.2 L CDRA engines

expand_moreM6


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Tighten the new screws evenly in several steps.
Second stage	90°90°90°


M8	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Tighten cross-wise.

expand_moreAll Audi diesel V8 4.1 L CDSB engines


M6	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Gradually tighten screws crosswise.
M8	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreAll other modifications

expand_moreScrews 1 – 9


Second stage	2.21 lbf⋅ft2.21 lbf⋅ft3 N⋅m
Third stage	90°90°90°

expand_moreScrew 10

Figure 11. Engine control, Bottom part of the control unit housing, All other modifications, Screw 10.


First stage	2.21 lbf⋅ft2.21 lbf⋅ft3 N⋅m
See figure 11.
Fourth stage	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreScrews 6 – 8


Fifth stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Sixth stage	90°90°90°

expand_moreScrew 9


Sixth stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Seventh stage	180°180°180°

expand_moreCamshaft timing chain slip rail

expand_moreAll Audi gasoline W12 6.3 L CEJA engines


Bearing screws	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreScrews


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll other modifications


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreCamshaft timing chain tensioner

expand_moreAll Audi gasoline V8 4.2 L CDRA engines


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll Audi diesel V6 3.0 L CDTB engines


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll Audi gasoline W12 6.3 L CEJA engines


Bearing screws	30.98 lbf⋅ft30.98 lbf⋅ft42 N⋅m

expand_moreScrews


First stage	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m
Replace screws.
Second stage	90°90°90°
Tensioning lever	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreAll Audi gasoline V8 4.0 L CEUA engines


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage	90°90°90°


All other modifications	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreCamshaft timing chain tensioning rail

expand_more4.2 TDI quattro with diesel V8 4.1 L 346 HP at 4000 RPM, 800 N⋅m at 1750 RPM engine (2009.11–)


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreCamshaft timing gear

expand_moreAll Audi diesel V8 4.1 L CDSB engines


Wheel	17.7 lbf⋅ft17.7 lbf⋅ft24 N⋅m


All Audi diesel V6 3.0 L CDTB engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
All Audi diesel V6 3.0 L CTBB engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreControl drive chain tensioner

expand_moreAll Audi gasoline V8 4.2 L CDRA engines


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll Audi gasoline V8 4.0 L CEUA engines


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage	90°90°90°


All other modifications	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreControl drive sprocket wheel

expand_moreAll Audi gasoline V8 4.2 L CDRA engines

expand_moreAt the bearing pedestal


Central screws	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreBearing pedestal


On the engine block	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreOn the engine block


Central screws	30.98 lbf⋅ft30.98 lbf⋅ft42 N⋅m

expand_moreAll Audi diesel V8 4.1 L CDSB engines

expand_moreAt the bearing pedestal

expand_moreCentral screws


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Use new screw.
Second stage	90°90°90°

expand_moreBearing pedestal


On the engine block	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Replace screws.

expand_moreOn the engine block

expand_moreCentral screws


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Use new screw.
Second stage	45°45°45°

expand_moreAll Audi gasoline W12 6.3 L CEJA engines


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Use new screw.
Second stage	135°135°135°

expand_moreAll Audi gasoline V8 4.0 L CEUA engines

expand_moreAt the bearing pedestal

expand_moreScrews


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreBearing pedestal


On the engine block	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreOn the engine block

expand_moreCentral screws


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Use new screw.
Second stage	45°45°45°

expand_moreAll Audi gasoline V6 3.0 L CGWD engines

expand_moreAt the bearing pedestal

expand_moreScrews


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage	60°60°60°

expand_moreBearing pedestal


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace screws.
Second stage	45°45°45°

expand_moreCentral screws


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Use new screw.
Second stage	90°90°90°

expand_moreAll other modifications

expand_moreAt the bearing pedestal

expand_moreScrews


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage	60°60°60°

expand_moreBearing pedestal

expand_moreOn the engine block


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace screws.
Second stage	45°45°45°

expand_moreOn the engine block

expand_moreCentral screws


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Use new screw.
Second stage	90°90°90°

expand_moreControl drive timing chain slip rail

expand_moreAll Audi gasoline V8 4.2 L CDRA engines


First stage	12.54 lbf⋅ft12.54 lbf⋅ft17 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll Audi diesel V8 4.1 L CDSB engines


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage	90°90°90°


All Audi gasoline W12 6.3 L CEJA engines	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m

expand_moreAll Audi gasoline V8 4.0 L CEUA engines


First stage	12.54 lbf⋅ft12.54 lbf⋅ft17 N⋅m
Replace screws.
Second stage	90°90°90°


All Audi gasoline W12 6.3 L CTNA engines	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m

expand_moreAll other modifications


First stage	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreInjection pump drive belt tensioning roller

expand_more4.2 TDI quattro with diesel V8 4.1 L 346 HP at 4000 RPM, 800 N⋅m at 1750 RPM engine (2009.11–)


Variant 1	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreVariant 2


First stage	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Second stage	90°90°90°

expand_moreInlet camshaft wheel

expand_moreAll Audi diesel V6 3.0 L CDTB engines


Wheel	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreAll Audi gasoline W12 6.3 L CEJA engines


First stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Use new screw.
Second stage	90°90°90°

expand_moreAll other modifications


First stage	59 lbf⋅ft59 lbf⋅ft80 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreIntermediate shaft chain sprocket

expand_moreAll Audi gasoline V8 4.2 L CDRA engines

expand_moreBearing pedestal

expand_moreOn the engine block


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage	90°90°90°


Central screws	30.98 lbf⋅ft30.98 lbf⋅ft42 N⋅m

expand_moreAll Audi diesel V8 4.1 L CDSB engines


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll Audi gasoline V8 4.0 L CEUA engines

expand_moreBearing pedestal

expand_moreOn the engine block


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage	90°90°90°


Central screws	30.98 lbf⋅ft30.98 lbf⋅ft42 N⋅m

expand_moreOil pump drive chain tensioner


All Audi gasoline V8 4.2 L CDRA engines	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreAll Audi diesel V8 4.1 L CDSB engines


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace bolts.
Second stage	90°90°90°

expand_moreAll Audi diesel V6 3.0 L CDTB engines


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll Audi gasoline W12 6.3 L CEJA engines


M6	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreAll other modifications


First stage	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace screws.
Second stage	45°45°45°

expand_moreOutlet camshaft wheel

expand_moreAll Audi gasoline W12 6.3 L CEJA engines


First stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Use new screw.
Second stage	90°90°90°

expand_moreAll other modifications


First stage	59 lbf⋅ft59 lbf⋅ft80 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreTension rail bearing screws

expand_moreAll Audi diesel V8 4.1 L CDSB engines


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Second stage	90°90°90°


All other modifications	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreTiming case cover

expand_moreAll Audi gasoline W12 6.3 L CEJA engines

expand_moreM6 × 18 screws


First stage	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m
Tighten the new screws evenly in several steps.
Second stage	45°45°45°

expand_moreM6 × 70 screws


First stage	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m
Tighten the new screws evenly in several steps.
Second stage	180°180°180°

expand_moreAll Audi gasoline V6 3.0 L CGWD engines

expand_moreScrews 1 – 11

Figure 12. Engine control, Timing case cover, Audi gasoline V6 3.0 L CGWD, Screws 1 – 11.


First stage	2.21 lbf⋅ft2.21 lbf⋅ft3 N⋅m
Replace screws. See figure 12.

expand_moreScrews 1, 2, 3, 5, 6, and 8


Second stage	90°90°90°

expand_moreScrews 9 – 11

expand_moreThird stage


First step	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Second step	90°90°90°

expand_moreScrew 4


Fourth stage	11.8 lbf⋅ft11.8 lbf⋅ft16 N⋅m

expand_moreScrew 7

expand_moreFifth stage


First step	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Second step	180°180°180°

expand_moreAll other modifications

expand_moreScrew 1


First stage	2.21 lbf⋅ft2.21 lbf⋅ft3 N⋅m
Replace screws. See figure 12.

expand_moreScrews 2 – 11


Second stage	2.21 lbf⋅ft2.21 lbf⋅ft3 N⋅m
Use new screws and tighten them crosswise.

expand_moreScrews 1, 2, 3, 6, and 8


Third stage	90°90°90°

expand_moreScrews 9 – 11

expand_moreFourth stage


First step	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Second step	90°90°90°

expand_moreScrew 4


Fifth stage	11.8 lbf⋅ft11.8 lbf⋅ft16 N⋅m

expand_moreScrew 7

expand_moreSixth stage


First step	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Second step	90°90°90°

expand_moreTiming case cover first cylinder row


All Audi gasoline V8 4.2 L CDRA engines	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreAll Audi diesel V8 4.1 L CDSB engines


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll Audi diesel V6 3.0 L CDTB engines


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace bolts and tighten crosswise.
Second stage	90°90°90°

expand_moreAll Audi gasoline W12 6.3 L CEJA engines

expand_moreM6 × 22 screws


First stage	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m
Replace screws.
Second stage	45°45°45°

expand_moreM6 × 70 screws


First stage	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m
Replace screws.
Second stage	180°180°180°

expand_moreAll other modifications


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreTiming case cover second cylinder row


All Audi gasoline V8 4.2 L CDRA engines	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreAll Audi diesel V8 4.1 L CDSB engines


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll Audi diesel V6 3.0 L CDTB engines


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace bolts and tighten crosswise.
Second stage	90°90°90°

expand_moreAll Audi gasoline W12 6.3 L CEJA engines

expand_moreM6 × 22 screws


First stage	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m
Replace screws.
Second stage	45°45°45°

expand_moreM6 × 70 screws


First stage	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m
Replace screws.
Second stage	180°180°180°

expand_moreAll other modifications


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreTiming chain tensioner intermediate shaft


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreToothed belt guard


4.2 TDI quattro with diesel V8 4.1 L 346 HP at 4000 RPM, 800 N⋅m at 1750 RPM engine (2009.11–)	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreTop part of control unit housing


4.2 FSI quattro with gasoline V8 4.2 L 366 HP at 6800 RPM, 445 N⋅m at 3500 RPM engine (2009.11–)	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreEngine lubrication

expand_moreOil cooler

expand_moreAll Audi diesel V8 4.1 L CDSB engines


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace screws.
Second stage	90°90°90°


All other modifications	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreOil drain plug


All Audi gasoline V8 4.2 L CDRA engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline V8 4.0 L CEUA engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All other modifications	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreOil filter housing

expand_moreAll Audi gasoline V8 4.2 L CDRA engines


M6	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
M8	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Oil filter cover	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAll Audi diesel V8 4.1 L CDSB engines


Oil filter cover	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreAll Audi diesel V6 3.0 L CDTB engines


Oil filter cover	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
On the engine block	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreAll Audi gasoline V8 4.0 L CEUA engines


Cap	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace sealing rings.
Oil filter drain plug	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m
Replace sealing rings.

expand_moreAll Audi diesel V6 3.0 L CPNA engines


Cap	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Otherwise	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreAll other modifications


Oil filter cover	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreOil pump

expand_moreAll Audi gasoline V8 4.2 L CDRA engines


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll Audi diesel V6 3.0 L CDTB engines


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll Audi gasoline V8 4.0 L CEUA engines


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace screws.
Second stage	90°90°90°


All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreOil pump chain wheel


All Audi diesel V8 4.1 L CDSB engines	45.73 lbf⋅ft45.73 lbf⋅ft62 N⋅m

expand_moreAll Audi diesel V6 3.0 L CDTB engines


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace screws.
Second stage	45°45°45°

expand_moreAll Audi diesel V6 3.0 L CPNA engines


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace screws.
Second stage	45°45°45°

expand_moreAll other modifications


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreOil sump

expand_moreAll Audi gasoline V8 4.2 L CDRA engines


Oil sump lower part	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Gradually tighten screws crosswise.

expand_moreOil sump top part


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Use new screws and tighten them crosswise.
Second stage	90°90°90°

expand_moreAll Audi diesel V8 4.1 L CDSB engines

expand_moreOil sump lower part


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Use new screws and tighten them crosswise.
Second stage	90°90°90°

expand_moreOil sump top part


Locking screws	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
TDC marking.
Otherwise	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Gradually tighten screws crosswise.

expand_moreAll Audi diesel V6 3.0 L CDTB engines

expand_moreOil sump lower part


First stage	2.21 lbf⋅ft2.21 lbf⋅ft3 N⋅m
Use new screws and tighten them crosswise.
Second stage	90°90°90°

expand_moreOil sump top part


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Tighten new screws crosswise in outside-to-inside order.
Second stage	90°90°90°
Locking screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
TDC marking.

expand_moreAll Audi gasoline W12 6.3 L CEJA engines

expand_moreOil sump lower part


First stage	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m
Tighten the new screws evenly in several steps.
Second stage	45°45°45°

expand_moreAll Audi gasoline V8 4.0 L CEUA engines

expand_moreOil sump lower part


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Gradually tighten screws crosswise.
Second stage	90°90°90°

expand_moreOil sump top part


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Use new screws and tighten them crosswise.
Second stage	90°90°90°

expand_moreAll other modifications

expand_moreOil sump lower part


First stage	2.21 lbf⋅ft2.21 lbf⋅ft3 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreOil sump top part


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreEngine management


Camshaft sensor	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreCrankshaft sensor

expand_moreAll Audi gasoline W12 6.3 L CEJA engines


First stage	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m
Use new screw.
Second stage	45°45°45°


All other modifications	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreGlow plugs


All Audi diesel V8 4.1 L CDSB engines	12.54 lbf⋅ft12.54 lbf⋅ft17 N⋅m
All other modifications	8.85 lbf⋅ft8.85 lbf⋅ft12 N⋅m

expand_moreKnock sensor


All Audi gasoline V8 4.2 L CDRA engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Audi gasoline W12 6.3 L CEJA engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Audi gasoline W12 6.3 L CTNA engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All other modifications	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreLambda sensor


All Audi diesel V6 3.0 L CDTA engines	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
All Audi diesel V6 3.0 L CDTB engines	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
All Audi diesel V6 3.0 L CDTC engines	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
All Audi diesel V6 3.0 L CMHA engines	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
All Audi diesel V6 3.0 L CTBB engines	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
All other modifications	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m

expand_moreEngine mounting


Engine bracket	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreEngine mounting

expand_moreAll Audi diesel V8 4.1 L CDSB engines


At the subframe	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreOn engine bracket


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Use new screw.
Second stage	90°90°90°

expand_moreAll Audi gasoline W12 6.3 L CEJA engines


At the subframe	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreOn engine mounting


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Use new screw.
Second stage	90°90°90°

expand_moreAll other modifications


At the subframe	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m

expand_moreOn engine bracket


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Use new screw.
Second stage	90°90°90°

expand_moreSubframe

expand_moreAll Audi gasoline V8 4.2 L CDRA engines

expand_moreM12 × 35 screws


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Replace screws.
Second stage	180°180°180°

expand_moreM12 × 55 screws


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Replace screws.
Second stage	180°180°180°

expand_moreM12 × 90 screws


First stage	84.82 lbf⋅ft84.82 lbf⋅ft115 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll Audi gasoline W12 6.3 L CEJA engines

expand_moreM12 × 35 screws


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Replace screws.
Second stage	180°180°180°

expand_moreM12 × 55 screws


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Replace screws.
Second stage	180°180°180°

expand_moreM12 × 90 screws


First stage	84.82 lbf⋅ft84.82 lbf⋅ft115 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll Audi gasoline V8 4.0 L CEUA engines

expand_moreM12 × 35 screws


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Replace screws.
Second stage	180°180°180°

expand_moreM12 × 55 screws


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Replace screws.
Second stage	180°180°180°

expand_moreM12 × 90 screws


First stage	84.82 lbf⋅ft84.82 lbf⋅ft115 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll other modifications


First stage	84.82 lbf⋅ft84.82 lbf⋅ft115 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreTorque arm


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Second stage	90°90°90°

expand_moreExhaust system


Catalytic converter	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace nuts. Use hot screw paste.

expand_moreExhaust manifold

expand_moreAll Audi gasoline V8 4.2 L CDRA engines


Lower nuts	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace nuts.

expand_moreUpper nuts


First stage	Tighten by hand
Replace nuts.
Second stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Third stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreAll Audi diesel V8 4.1 L CDSB engines


At the cylinder head	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Tighten new nuts evenly in several steps.

expand_moreAt the turbocharger


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws.
Second stage	90°90°90°


All Audi gasoline W12 6.3 L CEJA engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Replace nuts. Use hot screw paste.

expand_moreAll Audi diesel V6 3.0 L CPNA engines


First stage	Tighten by hand
Replace nuts. Use hot screw paste.
Second stage	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Tighten crosswise from inside to outside.
Third stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


All Audi gasoline W12 6.3 L CTNA engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Replace nuts. Use hot screw paste.
All other modifications	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Tighten new nuts evenly in several steps.

expand_moreExhaust pipe


All Audi diesel V6 3.0 L CDTB engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Replace screws.
All Audi gasoline W12 6.3 L CEJA engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace nuts.
All Audi diesel V6 3.0 L CTBB engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Replace screws.
All Audi gasoline W12 6.3 L CTNA engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace nuts.

expand_moreFuel supply

expand_moreFuel lines


High-pressure side	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreIgnition system


Spark plugs	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreStart system

expand_moreStarter

expand_moreAll Audi diesel V6 3.0 L CDTB engines


M10 × 50 screws	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m

expand_moreM12


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll other modifications


M10 × 50 screws	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2017 Audi A8 Quattro user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.

Before doing any DIY service please check your insurance policy and Audi warranty policy for your region. In some regions DIY service may invalidate your warranty.

Maintenance Items

Engine Fastener Tightening Specifications
Front Suspension Fastener Tightening Specifications
Rear Suspension Fastener Tightening Specifications
Transmission Fastener Tightening Specifications

Service Intervals

Conquer your fears and never give up!

DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow Audi A8 Quattro service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.

Doing basic service for your 2017 Audi A8 Quattro you're not only saving money, but also also improving your technical skills and learning something new.

2017 Audi A8 Quattro D4 facelift Engine Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

Audi A8 Quattro D4 facelift model years

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