1966 Chevrolet shortbed Fleetside - Wiper Upgrade - Tech

After disconnecting the battery, the next step was to remove the wiper blades by lifting upward away from the retaining pin and pulling the wiper blade off the wiper arm.

To remove the wiper arms without damaging the paint or denting the fresh-air grille, we used a layer of masking tape as a rest, and then twisted a large flat-blade screwdriver on the outer edge of the wiper arm upward.

With the sheetmetal screws at the front of the fresh-air grille removed, it was lifted upward and away from the cowl.

After soaking the wiper drive arm with penetrating oil, we rolled a newspaper up to act as a bridge to help press the wiper drive arm off the shaft by twisting and prying with a large flat-blade screwdriver.

Here's the stock C-10 wiper motor in comparison to New Port Engineering's unit. The bolt pattern for mounting is identical, but the stock mounting vibration isolators are not reused.

A 1 7/8-inch bead of silicone was used to attach the gasket to New Port Engineering's wiper drive.

The second gasket was affixed by repeating the process, making sure not to apply silicone to where the wiper drive meets inside the cowl. This was done to facilitate future removal to gain access for sound deadening and carpet installation.

Once we had determined the gasket remained centered as the wiper drive was bolted into place, we installed the wiper drive arm with the 1/4-20 nut New Port Engineering supplied.

Next, the wiper linkage was reinstalled using the original 1/4-28 nut, then the linkage was sprayed with a lubricant.