CMP windshield throwout arm assemblies

[Grant Bowker]

I recently had the chance to sit 3 arm types (Canadian) side by side for comparison.

[Grant Bowker]

Measured on the right hand motor in the post #38, I get the following dimensions:
A - centre to centre of mounting screws 4-11/16"
B - overall length 5-5/16" for the wiper casting, 5-3/16" for the bar holding the support tube
C - width of support bar 21/32" (mounting tab on motor casting 39/64")
D - thickness over tin shield and mounting bar 2-5/32"

E - D minus the support bar ~very close to 2" tin cover to mounting feet, but the dimension varies depending whether you measure to motor mounting feet, motor lid or motor body

F - width of tin cover 2-5/32"

G - height of tin cover 2-1/4" (dim. from top of tin cover to bottom of wiper bowlcasting 2-1/2")


Additional dimensions:
length of support tube for shaft (measured from face of support strap) 1-27/32"

length of wiper shaft (measured from face of support strap) 2-1/4"


The spacer strap on the inside of cab 13 windshield (measured on a Canadian Chevrolet) is made of 3/4x1/8" strip. Air gap between windshield frame and spacer strap 5/8". tip to tip measurement as mounted on frame approx 7-5/8" (imprecise due to welding on ends). length of surface to support wiper motor 6-1/16". Centre hole diameter 3/8" + clearance. Distance between outer mounting holes 4-11/16". Outer mounting hole diameters 3/16".

[Charlie Down]

Grant,

That's brilliant. Thank you.
I was about to post a further request for dimensions, but clearly there's more than enough to get my drawing finished now.
I'll spark up the CAD programme and hopefully get it finished over the weekend.

[m606paz]

Arms one Chevrolet with serial number?