Go Back

Start Page

Parts Book
Photos & # 

Page Links

Wiring Basic

Electrical Parts

Ing. Timing

Electrical Parts

Q&A Alt or Gen Best ?

Q&A Gen. Pulley

Purchase with
PayPal

9/16/02*

1st Turn the Pulley until the notch #1 is at the two o'clock position. Then with a screwdriver inserted into notch #1 Turn the nut #9 counterclockwise with a 13/16" wrench until the screwdriver stops the pulley rotating. Remove the outer 1/2 of the pulley #6 & the #7 shims.  To Loosen the generator belt, take outer shims #7 and add them to the inner shims stack #4. To tighten the belt, remove shims from inner stack #4 & place them under spacer #8. Be sure the pulley tabs #2 & #5 are lined up. Then tighten the 13/16" nut #9. The Pulley must have the correct number of shims in it so that when it is tightened down both halves of the pulley are tight on the shims. It is important is to let the pulley turn a little as you are tightening the nut to keep the belt from being pinched at the top of the pulley grove.

Tighten the nut #9 a little and let the pulley turn & tighten & turn. Some pulleys have flats on the inner hub instead of the tabs #3 & #5. I have never found a Gen/Alt. pulley that will not hold the load if installed correctly. New belts will stretch slightly and chrome pulleys must run the belt slightly tighter. 
With the generator belt adjusted properly it will almost turn the motor over when the 13/16" #9 pulley nut is turned. To tight and the Gen/Alt. bearings wont last and to loose the belt slippage will wear the belt out.

The correct belt to use is can be a little confusing as different suppliers call out different sizes. All we have checked work ok but some need a couple shims added or removed. See part #29 on this page for VW part numbers and belt sizes -> #29

  Cheep pulley or installed incorrectly -> ck 

       *Go Back