The purpose of the axle to rear spring seat bushings is to dampen out road noise at its source and in doing so,
prevents it from telegraphing through the springs to the frame into the body.
Also eliminates any axle to spring binding when the springs compress/decompress.
The bushing eye bolt size is:
5/8 - 18 x 4 1/16Group # 5.404 Once you replace bushings you have to seat them.
Rear Bushing Seating instructions below:
Page 1 Page 2 The shop manual states there is a cotter pin at eye bolt nut.
This
Illustration does not show a cotter pin. Just lock washer & nut.
The bushing has a inner metal sleeve so when tightening the eye
bolt the ears on the axle will not collapse inward.
