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how do you make 1964 Impala window washer blades come to ...

Sent to Car Experts May 22 2006 at 8:37 AM
   

how do you make 1964 Impala window washer blades come to rest at the bottom of the windshield when the switch is shut off.

Edited by Customer (name blocked for privacy) on May 23 2006 at 11:12 AM

 

Optional Information:
Pre-1981 Chevrolet impala 350cid

Already Tried:
move the blades on the blade posts./p>

Customer (name blocked for privacy)
Status:  Closed   Value: $15
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May 24 2006 at 12:11 PM (2 days and 3 hours later)
         
Relist: No answer yet.
Customer (name blocked for privacy)
Info Request
May 24 2006 at 7:17 PM (7 hours and 5 minutes and 50 seconds later)
         
REPLIED to Info RequestCheck Mark
Interesting.. That's what I would say.. Move the blades on the post. I would take the wiper arm assebly completely off the post. Turn the wipers on, then off to wait for them to park. Then put the blade assembly on in the correct position. Or is the problem the blades are not parking. When you turn off the switch do they stop where you turned them off?

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James -- Helicopter mechanic -- 92% Positive Feedback on 42 Car Accepts
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May 24 2006 at 7:45 PM (27 minutes and 55 seconds later)
         
Reply to James's Post: The blades are parking, but not in the lowest spot. When they come on, they swipe the whole window, going down to to lowest point on the window, but when shut off. they park a ways up on the window. I moved them on the posts and then they swip off the window beyond the lowest point. I'm thinking there must be some synch mechanism between the motor and the blade linkage that's off a few degrees. But before I yank the motor assembly, I'd like to know how the whole thing works, so I can look for possible fixes as I pull it apart.

Greg
Customer (name blocked for privacy)
Answer
May 24 2006 at 7:58 PM (13 minutes and 7 seconds later)
         
REPLIEDCheck Mark

I cannot find any diagrams of how they work. But I believe your problem will be in the linkage. When the wipers are off, can you grab them and move them back and forth? If so, this is probably your linkage loose or sloppy.



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James -- Helicopter mechanic -- 92% Positive Feedback on 42 Car Accepts
6 yrs helicopter mechanic on Blackhawks and Hueys
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May 24 2006 at 8:10 PM (12 minutes and 16 seconds later)
         
Reply to James's Post: The linkage is not sloppy. In fact the stop point is positive. The position of the blade posts is firm. What ever controls the arm assembly is stopping the cycle in the wrong place.
Customer (name blocked for privacy)
Answer
May 25 2006 at 4:23 PM (20 hours and 12 minutes and 30 seconds later)
         
REPLIEDCheck Mark

Hi again Customer (name blocked for privacy),

I believe then your problem to be the park switch or cam. These parts are internal to the wiper motor. Usually you replace the motor to fix this problem. But, if you're real savvy, you could dis-assemble the motor and try to fix it yourself. The switch supplies power to the wipers when turned off till the cam comes around and flips the switch "off" thus parking the wipers.

Images available only to Customers.

Wiring diagram below is specific to your vehicle.Images available only to Customers.



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James -- Helicopter mechanic -- 92% Positive Feedback on 42 Car Accepts
6 yrs helicopter mechanic on Blackhawks and Hueys
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May 27 2006 at 6:42 AM (1 day and 14 hours later)
         
Reply to James's Post: James, do you have the rest of the text describing how the wiper system works. I appreciate the picture and the circuit diagram. I haven't had time to pull the motor off the firewall. I think I need to reposition the motor shaft on the cam wheel, but I'm not sure. The remainder of the text might be helpful.

Greg
Customer (name blocked for privacy)
Answer
May 27 2006 at 10:02 AM (3 hours and 19 minutes and 56 seconds later)
         
REPLIEDCheck Mark

Hi Greg,

I'm so sorry, that was careless of me. The lower diagram was specific to your vehicle.. The upper diagram on how the wipers system works is generic, and not specific to your vehicle but most probably applies. Here is the rest of the pages along with the first.

Images available only to Customers.

Images available only to Customers.

Images available only to Customers.

Images available only to Customers.

Hope that helps you. Just let me know if I can be of more assistance. I'm not really an expert on windshield wipers and stuff, but I'm pretty good at finding information, working with people, and figuring things out.



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James -- Helicopter mechanic -- 92% Positive Feedback on 42 Car Accepts
6 yrs helicopter mechanic on Blackhawks and Hueys
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May 28 2006 at 4:42 AM (18 hours and 40 minutes and 44 seconds later)
         
Reply to James's Post: Thanks for the complet text. What I need to do is move the cam gear so that the park position is lower on the windshield: the lowest point in the travel pattern of the blades. I imagine that when I take the motor assembly off I will need to rotate the cam gear either clockwise or ccwise, put everything back together, and try it .Any suggestions for marking positions so that I don't get lost when I have to take it apart and do it again?

Greg
Customer (name blocked for privacy)
Answer
May 28 2006 at 7:48 AM (3 hours and 5 minutes and 15 seconds later)
         
ACCEPTEDCheck Mark

I've used a digitral camera for this before.. But you can use a awl or scribe to put a scratch mark in the positions of the gears/cams. Somewhat similar to how you line up the marks on a crank and cam gear on an engine. Even a permanent marker if you clean the surface first. Also, when I take something complex apart, I usually make sure I have a large clean surface to spread the parts out on. And I put them in a line in the order they were remove, and usually try to put them on the work surface in the same orientation they were before they were removed. I've also drawn pictures, or written on paper where the part goes and put the part on top of the paper. It takes longer, but if you're going to have this apart for any length of time, it makes it SO MUCH easier to remember how things to back together.

-James



If this helps, please ACCEPT. In not, send me a reply and I will help you further.
James -- Helicopter mechanic -- 92% Positive Feedback on 42 Car Accepts
6 yrs helicopter mechanic on Blackhawks and Hueys
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