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willysmjeeps.com :: View topic - M151 wiper motors
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M151 wiper motors

 
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4x4M38
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Joined: May 30, 2014
Posts: 2483
Location: Texas Hill Country

PostPosted: Sat Nov 11, 2017 9:47 am    Post subject: M151 wiper motors Reply with quote

Can someone that has mounted the M151 motors to their M38 or A1 and had to cut off their shafts to fit please advise the part number of the motor?

Thanks!
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Brian
1950 M38
MC11481
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Kendall
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Joined: Feb 25, 2006
Posts: 235
Location: Wichita, KS

PostPosted: Sat Nov 11, 2017 10:38 am    Post subject: Reply with quote

These are what I modified and currently have on my M38-
Trico 7017830. Then there is a paper sticker on the back side that has the number SK 527-16.
Kendall
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1952 M38
1952 M38A1
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4x4M38
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Joined: May 30, 2014
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Location: Texas Hill Country

PostPosted: Sat Nov 11, 2017 6:04 pm    Post subject: Reply with quote

I'm trying to identify the wipers being modified
by our members by shortening the shafts.

They are all identified as M151 wiper motors.

Here is a post:

http://www.willysmjeeps.com/v2/modules.php?name=Forums&file=viewtopic&t=7121&highlight=m151+wipers

According to several postsbtge M151 wiper shafts are too long
and will cause the wiper end to hit the windshield.

The specs shown for the M151 show the shaft shorter than the
M38/A1 shaft.

I guess I don't understand why the shafts are being cut off
if they are already shorter.
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Brian
1950 M38
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Kendall
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Joined: Feb 25, 2006
Posts: 235
Location: Wichita, KS

PostPosted: Sun Nov 12, 2017 7:47 am    Post subject: Reply with quote

Brian,
What I would recommend is for you to buy one (or two) of the above mentioned wiper motors. Then instead of comparing spec sheets you have it in hand and can make the necessary modifications work. I don't know what it means that the shafts are too short. The MUTT shafts are too long and have to be cut shorter and then narrowed down and threaded to accept the acorn nut. That is what I have done and they work (except I don't drive this jeep in the rain so can't say for sure how well they do work. I know that the motors worked very well while I was testing them).
Kendall
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1951 M38
1952 M38
1952 M38A1
1942 Dodge WC-55
1951 M100 trailer
1942 Ben Hur trailer
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4x4M38
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Joined: May 30, 2014
Posts: 2483
Location: Texas Hill Country

PostPosted: Sun Nov 12, 2017 8:01 am    Post subject: Reply with quote

Thanks Kendall.

The part numbers listed on the other post and yours
help a lot. Sometimes if you get lucky they show the
part numbers on listings.
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Brian
1950 M38
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oilleaker1
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Joined: May 14, 2009
Posts: 941
Location: South Dakota

PostPosted: Thu Nov 16, 2017 7:29 am    Post subject: Reply with quote

All the M38 and M151 wiper motors are simply a joke. Even brand new ones. I think the vacuum case on them which is smaller than a CJ3A type trico is the reason. Not enough power. All the double acting fuel pumps I've tried, M38, civi CJ, and even Chevrolet are also a waste of money. They do not help. I was looking into a electric vacuum pump to try and boost the vacuum supply when it finally hit me, why do that? Just buy a electric wiper motor and be done. The best are the American Bosch series. Some have 2 speeds, some are 6 volt, some are 12 volt, switch on the motor, or separate dash switch. They are metal fabricated and very tough. They also are small enough to fit right in place of the vacuum units. They show up on ebay if you watch.

So, the only thing in my mind the vacuum units are good for is looks, correctness, and a good work out for your free hand! Laughing John
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