64 Windshield wiper problem
 

The windshield wipers on my 64 haven't worked since I got it two years ago. After a little investigation I got them to work after giving the crank a little push. Initially the speed seems to vary a bit, but after they operate for a few minutes the speeds seem consistant and normal - both hi and low. They also park normally when turned off. The next day, the wipers won't start unless I give the crank a push. The shade tree mechanic in me thinks the grease in the gearcase has gotten hard, or is gone, but I'm guessing.
There is 11.8 V. at the wire that connects to the #2 terminal when the wipers are on.
Any suggestions?

A few raps with the hammer seems to work for me. Seriously. You can also make sure the linkage is lubed and not binding and that your motor is grounded well.

Problem occurs with the wiper linkage disconnected and the grounding is good.

If you need a replacement wiper motor, get it from NAPA. Theirs work unlike the crap sold at Auto Zone that burn up when you put the current to them. Don't ask me how I know. ;)