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Author Topic: Wiper vacuum motor  (Read 2788 times)

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Offline Harald

Wiper vacuum motor
« on: May 18, 2017, 10:10:21 AM »
Does anyone have a picture of the interior of such a wiper?
Axle is missing...
Why didn't they build them with a decent diesel engine?

Offline athawk11

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Re: Wiper vacuum motor
« Reply #1 on: May 18, 2017, 02:29:58 PM »
I�ve had them apart, but I didn�t take a photo of the part you need.� The shaft is attached to a flapper that swings back and forth in the oval cavity.� If you see no sign of a shaft (cut off�broken off, etc) then I wonder if the motor is also missing the flapper?

« Last Edit: October 04, 2017, 03:34:22 PM by athawk11 »
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Offline athawk11

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Re: Wiper vacuum motor
« Reply #2 on: May 18, 2017, 03:07:07 PM »
Here is a link to a website showing a sequence of photos showing you the guts of the vacuum wiper motor...

https://sites.google.com/site/willyscj2ajeep/home/trico-wiper-motor
2-1949 CJ3As
1-1946 CJ2A

Offline Harald

Re: Wiper vacuum motor
« Reply #3 on: May 18, 2017, 05:18:30 PM »
Great and many thanks.
Now, the blade seems to be in its housing, because when I action the manual lever it gives sucking noises and actioning the lever takes some force, though much less now that I gushed it with WD40 several times.
How much force does it normally take to action the manual lever?
Why didn't they build them with a decent diesel engine?

Offline athawk11

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Re: Wiper vacuum motor
« Reply #4 on: May 19, 2017, 10:49:45 AM »
Sucking noises and force are a good sign that the flapper is there.

How much force one should feel is difficult to describe in words.  The good motors I've messed with require some effort to manually engage, but not enough that the manual lever feels like it will break. 

You will want to clean out the WD-40 and lubricate it with something a little heavier.  In addition to lubing the flapper, a heavier grease also has some "sealing" qualities between the inner wall of the cavity and the flapper.  I use a medium level White Lithium grease that seems to work fairly well.  Opinions on the type of grease will vary.
2-1949 CJ3As
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Offline bverboy

Re: Wiper vacuum motor
« Reply #5 on: May 20, 2017, 05:03:56 AM »
where can you get gaskets and parts for these motors?

Offline bverboy

Re: Wiper vacuum motor
« Reply #6 on: May 26, 2017, 06:02:20 AM »
anybody?

Offline athawk11

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Re: Wiper vacuum motor
« Reply #7 on: May 26, 2017, 08:30:20 AM »
There is a guy on eBay selling a set of NOS gaskets for a ridiculous price.

If you dis-assemble the motor carefully, in many cases, you can save the original gaskets. 

There are no reproduction parts that I am aware of.  Best to get a decent core and rebuild one from two. 
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Offline athawk11

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Re: Wiper vacuum motor
« Reply #8 on: May 26, 2017, 02:58:02 PM »
These appear to be a good match for the vacuum motors I've had apart.  I just have a hard time paying $20.00 for a couple pieces of cardboard.  Especially when the vacuum motor didn't cost me that much. [smiley=huh.gif]

http://www.ebay.com/itm/TRICO-VACUUM-WIPER-MOTOR-GASKETS-JEEP-G503-WC-S-583-1-MB-MB is better-/182592389916?hash=item2a835ac31c:g:gvwAAOSwpDdVd2Am&vxp=mtr
2-1949 CJ3As
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Offline bverboy

Re: Wiper vacuum motor
« Reply #9 on: May 27, 2017, 05:52:39 AM »
thank you sir