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The track everybody else is on (wiper bushings and relays) is certainly logical and will eventually lead you to the problem, but because you've just re-built the wiper motor let me point out some possibilities in that area as I've recently BTDT.
Originally, your wiper motor was probably either dead and blowing fuses or working like a slug. So you opened up the wiper motor expecting to do a lube job, and like my recent effort, you found a full r&r was needed as the magnets had taken a walk -in amongst some rust let me guess. Now most sane people head off to the bone yard at that point, but obviously not the likes of you or me. Those guys are just lazy wimps, right?
Now I'm fairly adept at small motor repair, yet it took me an embarassing number of attempts to get this motor running properly and the wiper operation realigned. Everything turned out perfect in the end, but I almost lost the patient and my patience a couple of times. My fixed operating costs in beer and nuts alone would probably have paid for a used one though.
What did you use to re-glue the magnets? -a mildly hostile environment in there if you ask me. Industrial strength contact cement was what I started with. I finally ended up clamping them into place with scraps of cast aluminum I pop riveted inside the case (use aluminum so there's no affect on the magnetic fields, right!). Don't worry about magnet polarity and forget about directly pop riveting those curved brittle magnets. Do worry about leaving room for the long case bolts though.
When you were done, did you test the motor all by itself with the main spindle removed? -you need to ground the case to do this. It should really whir with only a slight buzz -about like a fuel pump. Are you still fairly sure it's running freely after final installation -you may need to polish and lubricate the spindle shaft.
I also knocked out a fuse or two and was suspecting a perfectly fine wiper relay before I realized that the armature was pulling the glued magnets away just enough to permit scuffing and that the armature bushings weren't perfectly aligned. So check that the armature still turns freely. Lightly slam the motor squarely on four sides to get the bushings aligned just before and after you do the final tighten on the end cap. There's also an end shaft freeplay adjustment (nylon screw) on the gearcase, but I couldn't budge it so I used wafer thin washers on the armature to minimize some of the slop in the system.
Anyway, those are just a few thoughts in case you missed something.
Now once you've got it all running again without blowing fuses and flapping like it hasn't flapped in years, you'll likely have some wiper realignment problems or wiper control problems (like the intermittent wipe no longer happening). All this and more can be caused by misalignment of the contacts in the gearcase. A bit of trial and error will be needed to tweek these back properly. You may also have to pull the small plastic cam off the spindle and re-position it. Note all original positions and contact gaps before getting carried away here. Don't resort to changing the wiper arms positions until you are satisfied all the spindles are behaving properly. The trickiest bit is getting everything to park neatly at the bottom of the stroke.
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