Audi A4 B6 1.8T AMB Timing Belt Replacement - Installing New Timing Parts

1. Clean up any mess that you made and install the new parts. Water pump bolts should be torqued to (15 NM or 11 lb-ft). Timing tensioner assembly bolts should be torqued to (15 NM or 11 lb-ft). Finally, the belt tensioner roller should be hand tightened at this point.

audi a4 1.8t new timing parts

2. Transfer the markings from the old belt to the new one. Install the belt by starting at the crankshaft sprocket, lining up the marks on the belt to the marks on the crankshaft sprocket. Then go to the water pump. Route the other side of the belt around the tensioner roller and finally over the camshaft sprocket. audi a4 1.8t timing belt installation

3. The belt is now installed and all you have left to do is set the proper tension. Make sure the nut circled in red is hand tightened. setting audi a4 1.8t timing belt tension

4. Use the Tool 3387 (or whatever else you can use to rotate the highlighted metal tab) and rotate it counter clockwise until you can remove the locking plate from the tensioner. Keep the tensioner in that position until you complete the next step. audi a4 set belt tension

When you remove the locking plate then rotate the metal tab clockwise until you can fit a 8mm object (a 8mm drill bit works so does a 8mm allen key) between the tensioner lever and tensioner housing. The specifications call for the distance between the two to be between 6mm and 10mm so 8mm is a good middle ground. NOTE: When rotating the metal tab, take care not to bend anything. When you have the proper clearance then tighten the nut on the metal tab to (27NM or 20 lb-ft). setting tension on audi a4 1.8t

5. Install the lower timing cover and torque to (10NM or 7 lb-ft.). And install crankshaft pulley and tighten those bolts to (10NM or 7 lb-ft.) + 90 degrees.

6. Rotate the engine clockwise a few times and make sure that all of the timing marks line up correctly.

7. Install upper timing cover.

8. Install the plastic hose clips.

9. Install the drive (serpentine) belt tensioner and the actual belt. audi a4 1.8t new serpentine belt

10. Return the carrier to the correct position.

11. Reinstall the bumper.

12. The last step is to bleed the coolant. Make sure that your car is level before bleeding. Open up the bleed screw on the coolant line circled in red and start pouring coolant into the coolant reservoir. Tighten the bleed screw when coolant begins flowing out of it. Top off the reservoir and install the cap. Start the engine and run it at 2000rpm for 3 minutes. Then let it idle until engine is at normal operating temp (middle of the temp gauge). Turn off the car and let it cool down. Coolant level will decrease so top it off as necessary. audi coolant bleed valve

The end!

# jim 2016-06-21 10:46
this is a great info and I thank you very much
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# lefu 2016-09-06 02:33
Hi, the water pump failed and audi a4 1.8t 2005 model could not cran, when replacing the water pump I found that the timing belt was badly damaged. Timing belt and the water pump were replaced and now car crank but it does not sta. Please help.
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# lefu 2016-09-06 02:37
Again, how to set up a time on the timing belt when it it became out of time because of teeth of timing belt that were damaged
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# ben 2016-10-31 23:37
When the timing belt was damaged it jumped time and bent the valves in the head so you have no compression and the motor will not start. You will need to pull the head and take it to a machine shop.
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# ithuteng 2016-12-21 09:50
Afternoon i mistakenly didnot mark my cams on A4 b6 2.0 Alt engine. I was doing the valves and the stem seals so just finished putting the valves back on the head but now im having a problem with lining the other 2 to the 1 with thetiming mark as i took the timing chain out. Can you please help with lining the cams
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# ben 2016-12-21 21:11
It appears that motor is similar to the 1.8t vw engines. We don't have the ALT motor in the u.s. but it looks like the timing set up is like the 1.8t.
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# Jack 2016-12-24 15:38
Helpful Article!! I have a situation/quest ion regarding the tensioner. I had not the tool to hold the piston depressed, hence allowed it to extend fully. Question is two fold: one- what is the method to recompress the piston, and two- what else can be used as a tensioner securing tool, as I have neither time nor availability to source the proper Audi tool. Thanks!!!
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# ben 2016-12-25 22:50
You pretty much need the tool to keep it compressed or you won't get the tensioner installed. It is a cheap too. Maybe $10
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# Lyzz 2017-05-11 23:01
I get the marks on both timing and cam aligned and when I reinstall the belt, the cam moves by one tooth. How do you get the belt on properly without moving the timing at all?
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# Mohsin 2017-05-29 07:58
Extremely good n well explained with the helps of pics. Thanku so much.
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# Buhle 2017-11-15 07:15
I have a audi a4 1.8t
I have done all markings and reinstalled the timing belt but when I start the car it has jumped tooth

Please help
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