Well…..you guys ready for this????
I dropped a plum bob from the spring perch center on the axle, and
double checked it with a ’47 ¾-ton axle that I’ve got out back of the
barn; 42.5” Center Line on both.
Then laid out the 36” frame width plus the 4.25” for each side of the
spring hanger to their outer edge, minus 2” to the center line of the two
springs and come up with……42.5”.
Which means there is a .5” gap at the “inside” of each of the spring hanger.
So……your .5” shim washer belongs on the “inside”, just as the service
manual says.
This tells me that somewhere down the line the springs had to have been
removed on my truck…unless they were improperly placed during production.

Denny Graham
Sandwich, IL

Denny G
Sandwich, IL