| Wolfie | -- 01-16-2010 @ 3:58 PM |
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I'm trying to get my wipers working. When I turn them on they make a 180 movement and stop. Off, they will return to the original position. These are vacuum wipers. Do you think my switch is the problem? Thanks!
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| Stroker | -- 01-16-2010 @ 4:27 PM |
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I don't think the problem is with the switch. I believe it is a linkage adjustment problem. In order for a vacuum wiper to oscillate, the motor has to travel full stroke, in order to trigger the internal toggle that diverts the vacuum to the other side of the drive paddle. If your linkage or wiper length prevents full stroke, then the wiper won't do anything but sweep as far as it can go.
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| ford38v8 | -- 01-16-2010 @ 5:07 PM |
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Good call, Stroker. I agree. Alan
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| Wolfie | -- 01-16-2010 @ 5:53 PM |
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I will disconnect the linkage and see if the motor continues to run. Thanks for the input. I'll let you know what happens.
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| Wolfie | -- 01-16-2010 @ 8:40 PM |
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OK, I disconnected the linkage and still the same action. On, the wipers make a 180 swipe, and off they return. The motor is strong and looks like it may have been replaced in recent years. Can you take the motor apart and what should I look for, or is it a sealed unit. Thanks!
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| ford38v8 | -- 01-16-2010 @ 10:58 PM |
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Wolfie, no, it is not a sealed unit. If it is strong, it may have been restored, as the original leather paddle blade would by now have been hard and weak. The control, if the paddle is good, will provide an infinite control from very slow operation to full speed. To my recollection, the trigger to return is outside, and switches the internal vacuum from one port to another, thereby sucking the paddle in the opposite direction. It is a simple device, better understood by observation than by description. If you need parts, there are several suppliers, one of which that I can personally recommend is: Kent Jaquith, 2633 SW Obsidian # 15, Redmond, Oregon (541) 923-4319 Clean-Sweep Windshield Wiper Motor Service, Sales and Rebuilding Alan
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| trjford8 | -- 01-17-2010 @ 7:33 AM |
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Wolfie, pull off the motor and put a little Marvel Mystery Oil in it through the vacuum source tube. Work it back and forth and then hook it up again to see if this helps. The oil will soften the old grease inside the wiper.If this does not work then you need to send it out for a rebuild.
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| 4dFordSC | -- 01-17-2010 @ 8:53 AM |
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You can also do this without removing the wiper motor. Just disconnect the vacuum supply hose at its source, squirt some motor oil, MMO, 3-in-1, etc. down it, and work the wipers back and forth a few times to draw in the oil. Worked for me.
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| supereal | -- 01-17-2010 @ 9:45 AM |
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There is a small "flipper" that is held by a spring. It is supposed to flip at the end of the stroke and reverse the action. It may be stuck, or the spring is weak or missing. As the wiper moves the blade are, the paddle is probably OK. Look for a chamber on the outside of the wiper motor that contains the flipper.
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| Wolfie | -- 01-17-2010 @ 1:06 PM |
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I took the motor apart and found a piece of gasket that that was keeping the small flipper from reversing the action. Put it back together and it works fine. Thank you Supereal for suggesting this and everyone else for the good input. This is a great site!
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| 40 Coupe | -- 01-18-2010 @ 5:37 AM |
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supereal is right on target.
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| Stroker | -- 01-18-2010 @ 11:44 AM |
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All: While on the subject of wipers, my 38 wagon always "parked" the wipers "in". I've seen other 38 "open cowl" Fords with the wipers parked "out", like a 40 thru 48. Since I haven't changed anything since new, (other than rebuilding the original wiper motor) I believe, at least for this particular car, "in" is correct. I have, however seen a few 38 wagons with them parked "out". The 38-39 Book doesn't appear to address this. Any thoughts?
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| Stroker | -- 01-19-2010 @ 7:02 AM |
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All: I moved my question to a new topic, as this thread has been pretty well resolved. Stroker
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