expand_moreBottom part of the control unit housing
expand_moreAt the cylinder head
First stage
3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Third stage
8.11 lbf⋅ft8.11 lbf⋅ft11 N⋅m
Sixth stage
90°90°90°
expand_moreOn the engine block
Second stage
5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Tighten screws crosswise, replace M6 screws.
expand_moreOn the engine block (M6)
Fourth stage
90°90°90°
expand_moreOn the engine block (M8)
Fifth stage
16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
expand_moreCamshaft timing chain tensioner
First stage
3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage
90°90°90°
expand_moreControl drive chain tensioner
First stage
3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage
90°90°90°
expand_moreControl drive sprocket wheel
expand_moreBearing pedestal
M6
6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
M10
30.98 lbf⋅ft30.98 lbf⋅ft42 N⋅m
M8
16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
expand_moreControl drive timing chain slip rail
First stage
12.54 lbf⋅ft12.54 lbf⋅ft17 N⋅m
Replace screws.
Second stage
90°90°90°
expand_moreDrive chain balance shaft tensioner
First stage
3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage
90°90°90°
expand_moreInlet camshaft wheel
First stage
44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Replace screws.
expand_moreSecond stage
First step
59 lbf⋅ft59 lbf⋅ft80 N⋅m
Second step
90°90°90°
expand_moreOutlet camshaft wheel
First stage
44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Replace screws.
expand_moreSecond stage
First step
59 lbf⋅ft59 lbf⋅ft80 N⋅m
Second step
90°90°90°
Timing case cover first cylinder row
6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Timing case cover second cylinder row
6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
expand_moreEngine lubrication
Oil cooler
6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Oil drain plug
18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
expand_moreOil filter housing
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
Oil filter housing cap
expand_moreOil sump
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
Replace screws.
Second stage
90°90°90°
Locking screws
25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace sealing rings.
expand_moreEngine management
Camshaft sensor
6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Knock sensor
14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Lambda sensor
40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
expand_moreEngine mounting
expand_moreEngine bracket
On the engine block
29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
expand_moreEngine mounting
On chassis
55.32 lbf⋅ft55.32 lbf⋅ft75 N⋅m
Otherwise
29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
expand_moreSubframe
First stage
84.82 lbf⋅ft84.82 lbf⋅ft115 N⋅m
Replace screws.
Second stage
90°90°90°
Cross support
29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
expand_moreExhaust system
Exhaust manifold
18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace nuts.
Exhaust pipe
16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Replace nuts.
Exhaust pipe bracket
16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
expand_moreIgnition system
Spark plugs
22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
expand_moreStart system
expand_moreStarter
M10
33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
expand_moreClass 10.9
M10
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 2003 Audi A6 S6 Avant 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.
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 A6 S6 Avant 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 2003 Audi A6 S6 Avant you're not only saving money, but also also improving your technical skills and learning something new.
2003 Audi A6 S6 Avant generations
In 2003 Audi offered 2 generations of the A6 S6 Avant. Engine fastener tightening specifications may vary in different generations. Be sure that you are looking at the rigt modification.
