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T4 2.5TDi AXG Alternator / Auxiliary Belt

5K views 13 replies 4 participants last post by  Motormouth  
#1 ·
Does anyone have any information or help on how to change the auxiliary belt on an AXG engine. I presume it must self tension but I can't see where or how to remove the tension while the belt is removed/refitted.

There isn't much room to see up the side of the engine and there is nothing that sticks out to lever on like I've seen on other 2.5TDi engines. I've looked on here and the internet in general but can't seem to find anything.

Any help or information would be much appreciated.
 
Discussion starter · #3 ·
I have found something that looks like that when I've searched on the internet but not not sure how to remove the tension and if it is self adjusting or not. Its very difficult to see anything on the van/engine itself.
 
Discussion starter · #5 ·
I already read on another thread that it should be possible to do that so I have tried to do that already but it barely moved and so I left it as I don't think I'd get the new one on. I have changed several of these belts on other cars with no problem over the years and it is normally a 2 minute job with a single spanner at most but the tension on this is very strong and I presume there must be something that can be levered on to back the tension off but due to the chassis leg I can't see what or how. There is currently an air con compressor fitted which I will be removing when I do the job as its not used on my van (not the original engine) and I think there is a redundant pulley to remove as well, I don't want to take the job on though without knowledge of the tensioner first as it could turn into a disaster otherwise once I cut/pry the old belt off.
 
Discussion starter · #12 ·
Thanks for all the help. Can't seem to find a how to guide but after reading all the information and looking at the photos of the tensioner it looks to me like there is a hex part to put a socket on at the top of the damper. I presume you can try to compress the damper with that, only problem is that it looks very difficult to get at and then trying to apply the force in the right direction to compress it looks almost impossible, maybe the engine mount needs to be removed so it can be done from above.
 
Discussion starter · #14 ·
Thanks for the information. I did this job yesterday and the tensioner cannot be accessed at all without removing the intake and engine mount so I decided to do it without touching the tensioner. I took the power steering pump pulley off then once the belt was fitted round all the pulleys (including power steering pulley) I used a bar off the chassis leg to lever the pulley back onto the pump shaft. Was ok in the end, hardest part was getting the belt over the tensioning pulley.

Just noticed on your photo I think my power steering pulley is fitted the other way round to yours, not sure if it matters or which way is correct.