RAM 3500 Truck 4WD L6-6.7L DSL Turbo (2008)
Wiper Arm: Description and Operation
Description
DESCRIPTION
The wiper arms are the rigid members located between the wiper pivots protruding from the cowl plenum cover/grille panel near the base of the
windshield and the wiper blades on the windshield glass. Both wiper arms feature an over-center hinge that allows easy access to the windshield glass for
cleaning.
The wiper arms each have a die cast metal pivot end (3) with a large internally serrated socket formation at one end. A key (4) within the socket
formation indexes the wiper arm to a keyway in the pivot shaft to provide wiper alignment, and a spring-loaded latch (5) on the underside of the pivot
end locks the unit to the pivot shaft when it is fully installed.
The wide end of a tapered, stamped steel channel (8) hinges on and is secured with a hinge pin (6) to the blade end of both the right and left wiper arm
pivot ends. One end of a long, rigid, stamped steel strap (2), 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 is bent back under itself to form a small hook (1). Concealed within the stamped steel
channel, one end of a long spring (7) is engaged with a wire hook on the underside of the die cast pivot end, while the other end of the spring is hooked
through the small hole in the steel strap. The entire wiper arm has a satin black finish applied to all of its visible surfaces.
The right and left 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.
