Wacky Wipers

[Sachmo]

After work one day it was raining, so i went to turn the wipers on. They made a jolt and then sat still. I got out and helped them back and forth a few times, until they went on their own. I've been doing this for about a month now, and I'm tired of explaining to people why i'm "warming up my wipers". Is this a symptom of a bad motor, or maybe just a bad ground?

 

[robert8096]

It could be that the wiper mechanism needs to be lubed but most of the time it's the wiper motor.

 

[chengny]

The brushes might be worn down to the point that they barely make contact and as they warm up can expand and do better. But before getting a new motor, be sure and try discoing the linkage and see if the motor runs free. Also while disconnected operate the linkage by hand to check for binding:

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And tell the "people" that the truck was built long ago - before the advent of semiconductors, even transistors. If they are still paying attention, you can add that they operate on vacuum tube technology and require a suitable warm-up period before use - like an old TV set.

 

[Sachmo]

Thanks for the replies guys! I cleaned up all the connections and checked for binding in the wiper arms with the motor disconnected. It was all good, so i'll order a new motor for it.