Patriot 4WD L4-2.4L VIN W (2007)
Wiper Arm: Description and Operation
Description
Front
FRONT
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 (6) that allows easy access to the windshield
glass for cleaning. The wiper arm has a die cast metal pivot end (4) with a large tapered mounting hole (5) at one end. A molded black plastic cap fits
over the wiper arm retaining nut to conceal the nut and this mounting hole following wiper arm installation.
The wide end of a tapered, stamped steel channel (3) hinges on and is secured with a hinge pin to the blade end of the wiper arm pivot end. One end of a
long, rigid, stamped steel strap (2), with a small hole near the end closest to the pivot, is riveted and crimped within the narrow end of the stamped steel
channel. The tip of the wiper blade end of this strap is bent back under itself to form a small hook (1). Concealed within the stamped steel channel is a
long tension spring (7) which is engaged with a wire hook to 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.
There are unique wiper arms for right-hand-drive and left-hand-drive vehicles, as well as for the driver and passenger side which are not interchangeable.
The arms have a letter D (driver) or P (passenger) cast into the lower surface of the pivot end to identify their proper locations. A wiper arm cannot be
adjusted or repaired and, if ineffective or damaged, it must be replaced.
Rear
REAR
The rear wiper arm is the rigid member located between the rear wiper motor output shaft that protrudes through a rubber grommet near the base of the
liftgate glass and the wiper blade on the outside of the glass. The wiper arm has a die cast metal pivot end (4) with a large tapered mounting hole (5) at
one end. A molded black plastic cap fits over the wiper arm retaining nut to conceal the nut and this mounting hole following wiper arm installation.
The wide end of a tapered, stamped steel channel (3) hinges on and is secured with a hinge pin (6) to the blade end of the wiper arm pivot end. One end
of a long, rigid, stamped steel strap (2), with a small hole near the end closest to the pivot, is riveted and crimped within the narrow end of the stamped
steel channel. The tip of the wiper blade end of this strap is bent back under itself to form a small hook (1). Concealed within the stamped steel channel
