Special Grease 100GR 3,6OZ

After disconnecting from power, I disassembled the grinder to figure out what was broken, checking all parts as I went along. Disassembly is pretty straight forward, starting by removing the grinding wheel, nut, shield and side handle. Remove the 4 screws and the cover of the bevel gear housing. A 9mm wrench is used to remove the pinion g ... Read more ear nut, to allow seperation of the motor armature from the gear housing. Before pulling the armature from the handle assembly, you can remove the side covers from the handle assembly and gently pull the brush retainers out of the handle/ motor frame to allow clearance. All parts were fine other than the motor cooling fan that had lost a 5/8" chunk of fin section. The air baffle and cover were still useable but slightly abraded by the fan parts, so I ordered those as well, being inexpensive anyway. The motor brushes were still about 70%, and all bearings were in excellent condition. The only other issue was that the bevel gear lubricant was pretty dried out, so I ordered a tube of that also.
Once my parts arrived I reassembled the grinder- the fan assembly pressed on the armature assembly with hand pressure- just be sure to align the splines. The cover, baffle, and bearing were easily tapped on the motor shaft using a small deep socket to push only on the bearings inner race. The pinion gear then pressed on the same way, then is retained by the 9mm nut. The armature can then be put back into the handle housing, the brush retainers put back in place, and the side covers reinstalled. The bevel gear housing can be pressed onto the armature/ bearing with hand pressure, perhaps with some light tapping with a padded hammer. The gear housing was re- greased with new lube ( it was cleaned while disassembled) and the gear cover/seal/ 4 screws replaced. The wheel guard was a bit tweaked from being used for 15 years, so I straightened that out before replacing it. I purchased an anti- vibe side handle for the old grinder too, as the original plastic handle was getting a bit beat up. In short, a fairly easy and inexpensive repair of an excellent tool. All the parts received from fix.com fit perfectly and were top quality. Hopefully I'll get another 15 years use out of this tool.