How do you set the timing on a Agu 20v engine. The engine i bought was missing the tensioner and the timing belt was loose, so to be on the safe side i want to make sure the timing is correct. Any help would be great. Cheers
Sound easier then i first thought, cheers jon. Will the bottom alternator pulley have to be removed to get to the one behind as i'm not sure if you can see the timing marks ? Or can you set the timing without removing it. Cheers
I managed to set the timing on the AGU today. Lined up the crankshaft pulley with the cam pulley, but when looking closely at the crankshaft pulley, i could see that the 4 hex bolts looked badly worn!! Now, say if the previous owner has put the pulley back on in a different position when doing the cambelt, how can i work out if the timing is correct at the crankshaft ?
Am i right in thinking the crankshaft pulley only goes back in one position only. Basically the way it comes off! Sorry for the novice question but ive never really done cambelts, pulleys, ect in the past!
Sorry, i seem to have worded it wrong above. Can the alternator pulley, which bolts onto the crankshaft pulley, only be fitting in one position ? Im just worried that if its been put back wrong, the timing could still be out even though i have aligned them both to 12. Cheers
By saying alternator pulley I assume you mean the vibration damper ('rubbered')pulley. It is fastened to the crankshaft timing pulley with four socket cap screws (Hex/Allen screws). If that is what you are describing then there is a possibility that it can go back on incorrectly. On my BAM there are two drilled alignment holes on the vibration damper pulley and only one aligning dowel on the crankshaft pulley. I would first ensure TDC by looking for the mark on the flywheel or sticking a long narrow screwdriver down cylinder No 1 spark plug bore. There is a notch on the inner circumference of the vibration damper this should line up with the notch on the lower timing belt cover. Use some tipp ex on the notches to make them stand out. When refitting the pulley I use a bit of loctite 243 and torque to 25Nm in the crosswise pattern. Hope this helps.
Thanks for that GtSpec Looking at the part number, mine should have two drilled alignment holes on the vibration damper pulley, meaning it can only be fitted one way. Which means as ive set the timing it should be ok ? My engine didn't come with a flywheel, so when i get one im guessing that will have to be aligned ?
Sorry for invading a thread... but i have a wee issue with setting up the timing on my AEB.. I've swapped the belt and now the timing mark at the lower pully is nearlly a cm out either side of the mark when alter it by one tooth...? Does it want 180 degree turn to line them up.?
Im confused. Can I tell the alignment by anything on that pulley. Agu by the way. One of the holes has something protruding from behind. Or do I have to get it off?
pretty sure the 4 mounting holes are drilled slightly offset same as mk1/2/3 so it will only go on 1 way. but never trust the alignment mark on that sprocket as the vibration damper can allow the outer part to move out of alignment. worked on a mk3 golf where the mark was over 90degrees out! check via flywheel TDC mark, or failing that visually check piston 1 is at TDC when the crank pulley mark is lined up
