You need to cover the inside of the main chamber
with a light layer of wheel-bearing grease. This
must also be applied to every surface that will
take the gasket, the cylindrical section in the
top, around the perimeter of the flapper, and on
the brass bushings that fit between the two halves.
Place a very light layer on the slider parts to
make a good seal. I also added a bit around the
brass cam and its pin, just for good measure.
Two of the three motors I rebuilt now work like a
champ! The wipers on my car move faster than they
ever did. All-in-all, I'd say that this project was