This is the classic "Before and After".....the top photo is the before, as you might suspect. It is a square body Lucas windshield wiper motor out of a '68 Saab 96V4, just as it looked when I took the sucker apart---YUK! This one had more GREASE--old, nasty, hardened crap--in it than any wiper motor I've ever worked on before. The owner said it only worked on one speed, sometimes. Given the amount of nasty gook inside it is a pure wonder that it worked, ANYTIME! I suspect that some "wrench", at some time, figured that "if a little does a little good, a LOT has to do a lot of good", and applied grease by the handful....
The second photo shows the same unit--cleaned and ready for reassembly, adjustment and testing. There were NO bad parts, just greasy parts, in this one. Even the armature and contact brushes were quite good.
This shows the wiper motor on my test bed. The different switches, and the relay that you can see duplicate the wiring for ANY Lucas wiper motor that I rebuild. This one passed all the tests with flying colors.
Isn't that one pretty! Ready to go to the customer, LOOKING, and WORKING like a new one. Good Stuff.