Vacuum Wiper Motor

Can anyone tell me if motors from a 55 CJ5 fit the same as ones from an equivalent M38A1 do ? Not
sure what windshield frame I have on mine . My Jeep is mix of both , some parts are the same for both ,
and some are not . It's not just a Jeep ; it's an adventure !!! Thanks

 

Different item. I imagine probably they could be swapped however, since the windshields are about the same. I'll compare my two jeeps when I can get the time.

M38A1 motor is part #681080 in my old book. Civilian shows as #689794

The military one has a manual assist lever, which I love in heavy snow, etc.

 

The M38A-1 had a valve "switch" mounted on the lower windshield frame near the clamp buckle. The wiper vacuum motors have no control and are always "on". A military windshield frame has two threaded holes where the vacuum "switch" mounts on the base of the frame. Additionally, the military frame's top channel has more arch. The civillian frame has the top channel that is exactly parallel to the top of the frame, whereas the military channel drops noticably lower on the outside corners.
The civillian vacuum motors have "pull" knobs on each unit to to turn the wipers off and on.
-Donny

 

I think there are a at least two military types. Mine has an on/off pull knob and a small thumb-lever assist on the back of the motor.

Another type has a 3" long underslung assist handle.

 

Thanks for the help guys ; my main concern is how they mount to the frame . I've got a line on a pair of motors for a good price and want to
be relatively sure they'll fit . I have motors with short levers on face of motor . The ones I can get have the long levers on the backside .
Not concerned with plumbing them , I can figure that out . Thanks again.

 

There is most likely a pair of standoffs and an adaptor bar that you can make work.

 

PeteL,
That first wiper moter you show with the pull knob looks like a couple civillian wipers I have, only yours is painted OD. Are you sure that the pull knob and short assist arm aren't chrome under the OD? Otherwise, identical to my civvy version.
The second wiper with the long arm is what I am used to seeing on M38A-1 models.
-Donny

 

Pretty sure. It came with the '52 M38A1-C when I got it surplus from Civil Air Patrol, but I can't verify they're original. My 1966 Army parts manual shows the long-lever type you refer to.

But if you search various images online, a lot of these 'thumb" lever type are shown in OD.

And my '56/'57 civilian jeep has no assist lever at all.