I had replaced the leaking camshaft seal earlier and you can read about how I did that here:
The alternator has 97,500 miles on it, so I decided to replace the brushes. I hadn’t seen evidence of oil leaks from the front crankshaft seal, but it turns out its very easy to replace it when I was replacing the alternator brushes. I also cleaned the rust and flaking paint off the starter motor and then painted it to stop any further rusting.
You can read about what I did on both of these tasks here:
- 12 BMW R75/5 Replace Alternator Brushes, Paint Starter Motor
- 11 BMW R75/5 Replace Front Crankshaft Seal
I bought the brushes at Euro Motoelectrics which is here in Denver, CO. I also picked up a hardened bolt to extract the alternator rotor from the tapered nose of the crankshaft.
These jobs went pretty quickly and were straight forward. I found I needed a 200/260 watt soldering iron to remove the old solder and solder the new brushes as they are soldered to a large plate that dissipates heat pretty well. My 140 watt gun wasn’t up to the task.
At this point, the engine work I planned is done. Here is the painted starter motor installed and the engine after polishing up the cases.