Alternator Adjustment Bracket

Description

If you use the GM 1-wire alternator setup mounted below the fan, you need a method to tighten the belt.

While I was expermenting with different solutions, I found a generator adjustment bracket off an old tractor and decided to try it. After one bend and one twist I had found the solution I liked. The entire alternator installation is self contained to the engine and looks like it might have come that way.



Materials

Tools

Steps

Refer to Figure A below for steps 1-4 and 8.
Refer to Figure B below for step 6-7.
Refer to Figure C below for steps 9-12.

  1. Cut the flat stock 8" long. Make sure each end of each piece of flat stock is square. Square the ends if necessary.
  2. Drill the 1/4" hole centered 3/8" from one end..
  3. Drill a 3/8" hole centered 1/2" from the opposite end.
  4. Drill a 3/8" hole centered 2-1/4" from the same end.
  5. If you are using a Mill to slot the bar, jump to step 8.after milling out the slot.
  6. Drill 3 3/8" holes centered between the last 2 drilled holes
  7. Using the Cutoff Disk in the Angle Grinder, cut out the remaining material between the 5 3/8" holes to create the slot.
  8. Round each end of the piece to create a small arc on each end.
  9. Put the end of the stock with the 1/4" hole in a vice 3/4" from the end.
  10. Bend the stock to approximately 60 degrees.
  11. Put the end of the stock with the slot in a vice 3" from the end
  12. Use the adjustable wrence to twist the stock 90 degrees.

Figures

Figure A: Alternator Adjuster Diminsions and Design. ( Click on image to enlarge. )


Figure B: Slot Drill Holes. ( Click on image to enlarge. )


Figure C: Bend and Twist Locations. ( Click on image to enlarge. )




Application

Bracket Installed ( Click on image to enlarge. )