Audi A4 B6 1.8T AMB Timing Belt Replacement - Setting Timing & Removing Parts

11. Set cylinder 1 to TDC by rotating the crankshaft clockwise until the mark on the pulley lines up with the mark on the timing cover. NOTE: the timing cover mark is hard to see. audi a4 1.8 t TDC mark

With the crank pulley lined up properly your camshaft sprocket mark should be lined as well. With some nail polish or touch up paint, put markings on the belt at the camshaft and at the crank. Also be sure to mark the actual camshaft sprocket and crankshaft sprocket. audi 1.8t camshaft timing

12. With everything lined up you can now remove the crankshaft pulley. It is held in place by four 6mm allen bolts. Use a wrench to counter holdthe crankshaft in place while you remove the pulley bolts. When you remove all the bolts you will have to use a flat head screw driver and slowly pry the pulley out. Make sure that the crankshaft does not move when you do this. Just a FYI, the pulley has a notch and can only be installed one way. audi a4 1.8t crank pulley removal

13. With the pulley out of the way, remove the lower timing cover. It is held in place by 10mm bolts. audia 4 1.8t lower timing cover

You should now be left with the following: audi a4 timing parts old exposed

14. To remove the timing belt you will have to release the tension first . Insert an allen key into the highlighted part and rotate the tensioner roller counter clockwise until you can insert a lock plate inside the tensioner assembly. audi a4 belt release tension

Then use the Tool 3387 to rotate the metal tab (highlighted) clockwise. There should now be plenty of slack in the timing belt so you can remove it. Make sure that when you remove the belt that the camshaft sprocket does not move. audi a4 tensioner roller

15. With the belt out of the way, remove the nut on the tensioner roller and take it out. audi a4 1.8t tensioner roller removal

16. The tensioner assembly is secured by two bolts. In this picture you can see that I did not use a lock plate since I will be replacing the tensioner anyway. audi a4 1.8t hydraulic tensioner

Here are the new parts - new tensioner roller and tensioner assembly with locking plate installed. audi a4 new timing parts roller and tensioner

17. If you are planning on changing the water-pump you will have to drain the coolant. Best place to start is by removing the coolant temp sensor that is on the bottom of the radiator (driver side). Make sure you remove the cap on the coolant reservoir. There is a clip that you have to slide out before you can remove the sensor. Have a bucket ready because coolant will be gushing out when you remove the sensor. Although not mandatory, to drain the remaining coolant you can take off the coolant hose from the oil cooler and drain from there. audi a4 1.8t drain coolant

18. There are three bolts that secure the water pump. Remove those and slide the pump out. audi a4 1.8t water pump removal

# 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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