I enjoy things that last a long time. I'd oftentimes rather maintain an item, rather than replacing it later because it broke, or failed, leaving me stranded.
I have a Toyota Motorhome with a 22R engine, and while I am rebuilding the engine, I decided to re- grease the motor and mechanism. The 22R engine is regarded by many as one of the most reliable internal combustion engines made.
I found what I think to be the most well- built starter motor I have ever seen. Everything has either ball bearings, or roller bearings, on both ends of each shaft. Wow... A far cry from the sintered brass bushings you'll find on other starters.
Oh! Sorry. On to the instructable.
P.S. You'll find I enjoy using a *lot* of grease. You may disagree with the amount of grease I use, and that's fine. The principles are the same.
Step 1: Begin by removing the two small Phillips screws on the back of the motor.
Degrease the starter motor assembly. I recommend hot water and Super Clean.
Begin by removing the two small phillips head screws on the back of the motor. These two small screws hold the brush assembly against the rear motor cover.
Disconnect the positive motor terminal from the other end of the solenoid connection post. This nut is under the brown protective cover. Thread the nut back on the stud so you do not lose it.
Next, remove the two long bolts holding the motor assembly to the gearcase assembly.
If for some reason the rotor sticks and the coil assembly and brush assemblies come out, do not pannick! In fact, this must happen at some point, anyway.
If you are adventurous, you could remove the motor end cap first, then the rotor, then the coil assembly.
You can now remove the rotor if ti did not come out. Look at the pics. Bearings on both ends. Nice!