I have been reading threads related to this topic but none of them
answer this problem as it relates to ECOdiesels. The AC compressor and
Alternator do not use the gear toothed bolts used on gas engines and
non-turbodiesels. The Compressor tensioner are adjusted with a 13mm
combination wrench. You loosen a clamping bolt, then tighten the
tensioner bolt, then tighten the clamping bolt to hold the tension.
Next, you loosen a 17mm clamping bolt on a tensioner pulley for the
Alternator, tighten the 13mm tensioning bolt which pulls the pulley
toward the front of the car, thus tensioning the belt, then tightening
the 17mm clamping bolt on the pulley to hold the tension.
Removing the compressor is much more of a problem in these vehicles.
The bracket that holds the AC compressor tensioner also supports the
power steering pump. There is no clean way to reinstall the
Alternator. I'm guessing one would have to get the brackets from a
non-AC Jetta diesel with power steering (does such a thing exist?) and
swap them in along with the longer pulley so the belt lines up to it.
Anyone have a simpler solution? If all else fails, I will remove the
injection pump, pull the AC support bracket off the engine block (two
bolts are behind the inj. pump!), and drill a 7/16" hole throught the
threaded holes in the bracket where the two allen head bolts use to
reside. I will use a long 7/16" bolt and run it all the way through
the holes to hold the compressor and use a nut with nylon insert to
support the compressor.