Belt replacement

[obnoxiousblue]

I noticed a slight "rattling" sound coming from the motor today, granted the noise has probably been there for a while but I never heard it till today.

It appears as if the belt is loosening, (no big deal right?) But in the 5 years Ive had this bus, the belt has never needed to be replaced! Plus, Ive only replaced belts on bugs...

Is this the same set up with shims? or it the type 4 set up more similar to newer style cars with adjusters? I did notice that there is a slot cut in the alternator bracket that seems to insinuate that rotating the alternator along this bracket would "tighten" the belt though just the same it seems like there are shims on the pulley too... Just not sure which is most appropriate to use as Ill be replacing this belt before the duck next weekend. (or AT the duck next weekend! haha)

[prez]

Loosen the 6mm allen which tightens the belt, [upper] lube it, too-there is a 8mm nut underneath ehich locks the pivot-install new belt, tighten both.  [ Make sure the fan is tight before.]

[jhicken]

I would assume the same half inch inflection? I need to do the same on our new acquired '79.

-jeffrey