Just use the end of a sharpie fat-tip marker to gently massage the lip seal open by making several passes around the perimeter to open it up a little, then polish the water pump drive coupler smooth and slide the seal over it. Rotate the coupler while sliding it into help it move through without rolling the lip seal over. Then use a socket to gently hammer the seal into place. This is what I did on my wagon and had no problems. Each of the two seals needs to face outward on its respective side.