When you look at the part list onthis page, you can see the washer number 15. It is alone.$

we disassembled 2 motors and we found on the first a stacking up of 10 chocks (2.36 mm) behind this washer.

On the second motor we found just one (2.50 mm).

On my motors, there is just the number 15 washer.
Who would have an explanation on the presence of this additional wedging while list leaves him do not speak about it? Already have you to meet this problem?
Thanks