If the wiper arms are slipping on the knurled knob they're supposed to slide over, put a drop of red or blue LocTite on the knurl before installing the wiper arm. Let it dry overnight before running the wipers. If you use the red stuff, be aware that it will probably be necessary to heat the assembly to ever get it apart again.
Jerry

Last edited by Hotrod Lincoln; 10/25/2009 12:32 AM.
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