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Chevy Forum: 74 Nova windshield washer pump question
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  #1  
Old 02-07-2020, 10:03 AM
chins74 chins74 is offline
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Default 74 Nova windshield washer pump question

I just removed the windshield washer pump assembly from my nova. I now understand that it is a electro/mechanical pump! My question is the metal cam that turn to allow the pump action is it driven mechanically aor is it driven electrically? I have not taken the windshild wiper motor out yet. I was hoping someone knew how the cam operated before i start taking it out! This nova is starting to come together so thanks for all your help! Chins74
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Old 02-07-2020, 11:11 AM
zora zora is offline
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Default Re: 74 Nova windshield washer pump question

Do you see a worm gear coming out of the motor which engages a large circular gear that turns the cam?
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Old 02-07-2020, 11:21 AM
chins74 chins74 is offline
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Default Re: 74 Nova windshield washer pump question

Thanks Zora!! So the cam is mechanically driven off the wiper motor by gears. It sounds like i have a gear issue because the wipers work but the cam does not turn. Thanks for the help!! Chins74
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Old 02-07-2020, 08:01 PM
chins74 chins74 is offline
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Default Re: 74 Nova windshield washer pump question

well got it all apart relubed and back working! What a engineering nightmare!
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Old 02-07-2020, 09:28 PM
zora zora is offline
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Default Re: 74 Nova windshield washer pump question

Glad to hear it's working
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