2011 Audi A8 engine fastener tightening specifications

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Condition	Value

expand_moreAir intake system

expand_moreIntake manifold


All Audi diesel V6 3.0 L CLAB engines	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreAuxiliary assemblies

expand_moreAuxiliary drive belt deflection pulley


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

expand_moreAuxiliary drive belt tensioner

expand_moreAll Audi diesel V6 3.0 L CLAB engines


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

expand_moreAir-conditioning compressor


All Audi diesel V6 3.0 L CLAB engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAir-conditioning compressor bracket


All Audi diesel V6 3.0 L CLAB engines	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


Alternator	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreGenerator bracket


All Audi diesel V6 3.0 L CLAB engines	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_morePower steering pump bracket


3.0 TDI with diesel V6 3.0 L 201 HP at 3750 RPM, 400 N⋅m at 1250 RPM engine (2011.9–)	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreHydraulic lines at the servo-steering pump

expand_moreAll Audi diesel V6 3.0 L CLAB engines


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

expand_moreServo pump pulley


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

expand_moreServo steering pump


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


Vacuum pump	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreCarburetion

expand_moreFuel-distributing pipe


All Audi diesel V6 3.0 L CLAB engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreHigh-pressure line


All Audi diesel V6 3.0 L CLAB engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreHigh-pressure pump


All Audi diesel V6 3.0 L CLAB engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreHigh-pressure pump pulley

expand_more3.0 TDI with diesel V6 3.0 L 201 HP at 3750 RPM, 400 N⋅m at 1250 RPM engine (2011.9–)


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

expand_moreInjection hoses


3.0 TDI with diesel V6 3.0 L 201 HP at 3750 RPM, 400 N⋅m at 1250 RPM engine (2011.9–)	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreInjection nozzle (injector)

expand_more3.0 TDI with diesel V6 3.0 L 201 HP at 3750 RPM, 400 N⋅m at 1250 RPM engine (2011.9–)


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

expand_moreCharging

expand_moreTurbo charger


3.0 TDI with diesel V6 3.0 L 201 HP at 3750 RPM, 400 N⋅m at 1250 RPM engine (2011.9–)	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Replace screws. Use hot screw paste.

expand_moreCooling system


Coolant pump	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Gradually tighten screws crosswise.

expand_moreCoolant pump pulley


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

expand_moreCylinder head

expand_moreCamshaft bearing

expand_moreAll Audi diesel V6 3.0 L CLAB engines


First stage	Screw in screw(s) by hand.
Note correct order of tensioning.
Second stage	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreCylinder head screws

expand_moreAll Audi diesel V6 3.0 L CLAB engines

Figure 1. Cylinder head, Cylinder head screws, Audi diesel V6 3.0 L CLAB.


First stage	Tighten by hand
Replace screws. See figure 1.
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 V6 3.0 L CLAB engines

Figure 2. Cylinder head, Valve cover, Audi diesel V6 3.0 L CLAB.


First stage	Screw in screw(s) by hand.
Replace screws. See figure 2.

expand_moreSecond stage


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

expand_moreEngine block

expand_moreBalance shaft gear wheel

expand_moreAll Audi diesel V6 3.0 L CLAB 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_moreConnecting rod bearing

expand_moreAll Audi diesel V6 3.0 L CLAB engines


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

expand_moreCrankshaft pulley


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 CLAB engines

expand_moreOn crankshaft


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

expand_moreEngine block closure screws


3.0 TDI with diesel V6 3.0 L 201 HP at 3750 RPM, 400 N⋅m at 1250 RPM engine (2011.9–)	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreFlywheel

expand_more3.0 TDI with diesel V6 3.0 L 201 HP at 3750 RPM, 400 N⋅m at 1250 RPM engine (2011.9–)


To drive plate	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Replace screws.

expand_moreMain bearing

expand_moreAll Audi diesel V6 3.0 L CLAB engines

Figure 3. Engine block, Main bearing, Audi diesel V6 3.0 L CLAB.


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace screws. See figure 3.

expand_moreSecond stage


First step	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Second step	180°180°180°

expand_moreVibration damper

expand_more3.0 TDI with diesel V6 3.0 L 201 HP at 3750 RPM, 400 N⋅m at 1250 RPM engine (2011.9–)


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

expand_moreEngine control

expand_moreCamshaft timing chain slip rail

expand_moreAll Audi diesel V6 3.0 L CLAB engines


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 diesel V6 3.0 L CLAB engines


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

expand_moreCamshaft timing gear


3.0 TDI with diesel V6 3.0 L 201 HP at 3750 RPM, 400 N⋅m at 1250 RPM engine (2011.9–)	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m


Control drive chain tensioner	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreControl drive timing chain slip rail


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

expand_moreInlet camshaft wheel

expand_more3.0 TDI with diesel V6 3.0 L 201 HP at 3750 RPM, 400 N⋅m at 1250 RPM engine (2011.9–)


Wheel	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreOil pump drive chain tensioner

expand_moreAll Audi diesel V6 3.0 L CLAB engines


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

expand_moreTension rail bearing screws


3.0 TDI with diesel V6 3.0 L 201 HP at 3750 RPM, 400 N⋅m at 1250 RPM engine (2011.9–)	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreTiming case cover

expand_more3.0 TDI with diesel V6 3.0 L 201 HP at 3750 RPM, 400 N⋅m at 1250 RPM engine (2011.9–)

expand_moreScrews 1 – 4

Figure 4. Engine control, Timing case cover, 3.0 TDI with diesel V6 3.0 L 201 HP at 3750 RPM, 400 N⋅m at 1250 RPM engine (2011.9–), Screws 1 – 4.


First stage	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
See figure 4.

expand_moreScrews 5 – 10


Fourth stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreScrews 5 – 24


Second stage	2.21 lbf⋅ft2.21 lbf⋅ft3 N⋅m
Replace screws.
Third stage	2.21 lbf⋅ft2.21 lbf⋅ft3 N⋅m
Control tensioner
Fifth stage	90°90°90°

expand_moreTiming case cover first cylinder row

expand_more3.0 TDI with diesel V6 3.0 L 201 HP at 3750 RPM, 400 N⋅m at 1250 RPM engine (2011.9–)


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

expand_moreSecond stage


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

expand_moreTiming case cover second cylinder row

expand_more3.0 TDI with diesel V6 3.0 L 201 HP at 3750 RPM, 400 N⋅m at 1250 RPM engine (2011.9–)


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

expand_moreSecond stage


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

expand_moreEngine lubrication

expand_moreOil cooler


All Audi diesel V6 3.0 L CLAB engines	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m


Oil drain plug	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Use new screw.

expand_moreOil filter housing

expand_moreAll Audi diesel V6 3.0 L CLAB 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_moreOil pump

expand_moreAll Audi diesel V6 3.0 L CLAB engines


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

expand_moreOil pump chain wheel

expand_moreAll Audi diesel V6 3.0 L CLAB engines


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

expand_moreOil sump

expand_moreAll Audi diesel V6 3.0 L CLAB engines

Figure 5. Engine lubrication, Oil sump, Audi diesel V6 3.0 L CLAB.

expand_moreOil sump lower part
See figure 5.


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

Figure 6. Engine lubrication, Oil sump, Audi diesel V6 3.0 L CLAB.

expand_moreOil sump top part
See figure 6.


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage	90°90°90°
Locking screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
TDC marking.

expand_moreEngine management

expand_moreCamshaft sensor


All Audi diesel V6 3.0 L CLAB engines	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m


Crankshaft sensor	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreExhaust gas temperature sensor


3.0 TDI with diesel V6 3.0 L 201 HP at 3750 RPM, 400 N⋅m at 1250 RPM engine (2011.9–)	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreGlow plugs


3.0 TDI with diesel V6 3.0 L 201 HP at 3750 RPM, 400 N⋅m at 1250 RPM engine (2011.9–)	12.54 lbf⋅ft12.54 lbf⋅ft17 N⋅m

expand_moreLambda sensor


All Audi diesel V6 3.0 L CLAB engines	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m

expand_moreEngine mounting

expand_moreEngine bracket

expand_moreAll Audi diesel V6 3.0 L CLAB engines


On the engine block	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreEngine mounting

expand_moreAll Audi diesel V6 3.0 L CLAB engines


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 diesel V6 3.0 L CLAB engines


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

expand_moreTorque arm

expand_moreAll Audi diesel V6 3.0 L CLAB engines


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_moreDiesel particulate filter


3.0 TDI with diesel V6 3.0 L 201 HP at 3750 RPM, 400 N⋅m at 1250 RPM engine (2011.9–)	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Replace nuts. Use hot screw paste.

expand_moreExhaust manifold

expand_moreAll Audi diesel V6 3.0 L CLAB engines


At the cylinder head	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace nuts. Use hot screw paste.

expand_moreAt the turbocharger


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


Exhaust manifold heat shields	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreExhaust pipe


All Audi diesel V6 3.0 L CLAB engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Replace screws.

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 CLAB 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°

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2011 Audi A8 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 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 2011 Audi A8 you're not only saving money, but also also improving your technical skills and learning something new.

2011 Audi A8 D4 Engine Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

Audi A8 D4 model years

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