Front Wiper Arm: Description
The front wiper arms are the rigid members located between the wiper pivots that protrude from the cowl plenum cover/grille panel near the base of the windshield and the wiper blades on the windshield glass. These wiper arms feature an over-center hinge that allows easy access to the windshield glass for cleaning. The wiper arm has a die cast metal pivot end (3) with a large tapered mounting hole at one end. A molded black plastic cap fits over the wiper arm retaining nut to conceal the nut and the mounting hole following wiper arm installation.
The wide end of a tapered, stamped steel channel (1) hinges on and is secured with a hinge pin (2) to the blade end of the wiper arm pivot end. One end of a long, rigid, stamped steel strap (4) with a small hole near its pivot end, is riveted and crimped within the narrow end of the stamped steel channel. The tip of the wiper blade end of this strap has a stamped steel receptacle (5) crimped onto it to accept the latching pivot block of the front wiper blade. Concealed within the stamped steel channel is a long tension spring which is engaged with a wire hook on the underside of the die cast pivot end and is hooked through a small hole in the steel strap. The entire wiper arm has a satin black finish applied to all of its visible surfaces.
The driver and passenger side wiper arms are unique and are not interchangeable. A wiper arm cannot be adjusted or repaired. If damaged or ineffective, the entire wiper arm unit must be replaced.