it is actually very simple , drive out the solid pin the the steering shaft install the new rubber gasket & steel cover & replace tthe solid pin then the spring goes on over the pin & the 2 shoes go onto the pin & spring , the spring sit to one side of the shaft Not under the end of it , now slide all the parts into the coupler , dpressing the spring as it goes into the coupler , the tiny pin is driven into a small hole at the top of the coupler to keep it from slding apart . the Claws on the steel cover plate need to be bent over slightly so they grip the top of the coupler , this is the worst part , it is a poor design at best , the roll pin is driven through the coupler after you slide th ecoupler over the steering shaft on the steering box