The voltage regulator and brush assembly is held onto the back of the
alternator with two screws. You might have to pull the airbox to access
it, but otherwise it's trivial to check.
The brush spec is: new 12mm, replace at 5mm
If the voltage regulator is still good, you can save some money by
replacing only the brushes. The regulator is $50-$70, while the brush
kit is as low as $3 aftermarket.
12-31-1-727-756 Alternator brush repair kit, $8.60 list, $7.31 (-%15)
Two brushes, two springs, and two clips.
The new brushes come with a crimp ring that installs on the braided
wire after you thread it through the springs then holder.
Cut the wires holding the original brushes in place.
Set the new brush length at 12mm past the holder and crimp the ring.
Solder the ring and wire to hold it in place (optional but recommended).
Or you can buy a new voltage regulator for only about $30 at places such as autohausaz.com, fap99.com, pelican parts, etc.
Both options are easier than replacing the whole alternator just for worn brushes. As long as your front bearing is still smooth, a "rebuilt" alternator isn't an improvement.
alternator with two screws. You might have to pull the airbox to access
it, but otherwise it's trivial to check.
The brush spec is: new 12mm, replace at 5mm
If the voltage regulator is still good, you can save some money by
replacing only the brushes. The regulator is $50-$70, while the brush
kit is as low as $3 aftermarket.
12-31-1-727-756 Alternator brush repair kit, $8.60 list, $7.31 (-%15)
Two brushes, two springs, and two clips.
The new brushes come with a crimp ring that installs on the braided
wire after you thread it through the springs then holder.
Cut the wires holding the original brushes in place.
Set the new brush length at 12mm past the holder and crimp the ring.
Solder the ring and wire to hold it in place (optional but recommended).
Or you can buy a new voltage regulator for only about $30 at places such as autohausaz.com, fap99.com, pelican parts, etc.
Both options are easier than replacing the whole alternator just for worn brushes. As long as your front bearing is still smooth, a "rebuilt" alternator isn't an improvement.
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