CMP windshield throwout arm assemblies

[Lynn Eades]

Charlie, here is my opinion on your center photo.
Top two are CMP. and later U.S Mil. production.
Third down is U.S. manufacture. (eg. 42 Dodge 3/4 ton)
Bottom one is British.

This is just my opinion from what I have experienced. I could well be wrong.

I believe the big cylindrical ones can be converted from pressure to vacuum or vicky verco.
Also my comment about the hill was because when the throttle is closed you get the max . manifold vacuum and when the throttle is down (open) you have very little manifold vacuum, which results in the wipers slowing or stopping.

I have never seen the top one in your first photo, before now.

[Charlie Down]

Hi Lynn,
I'm beginning to think that the shape of the block on the rear of the motor is an optical illusion and that of the 4 motors in your photograph it's the second one down, based on the lever and other details.
This also seems to be quite a common version.
Would it be an option for late 1941?
What do you think?
Do you have any dimensions and photos that I could use to finish the drawing?

[Lynn Eades]

They're not my photos Charlie. I don't know about the dates those units were first used.