WI PER LI N K AGE
DESCRIPTION
The wiper linkage and pivots are concea led within
the engine com pa rtmen t below the cowl top panel
(Fig. 28). The ends of the wiper pivot sh afts that pro-
trude thr ough dedicated openings in the cowl t op
panel t o dr ive t he wiper a rm s and blades ar e t he
only visible componen ts of the wiper linkage module.
The wiper linkage modu le consists of the following
major components:
• Li n k a g e - The two wiper drive links are each
constru cted of stam ped steel. The left (driver) side
dr ive link has a plastic socket-type bushing in one
end, and a plastic sleeve-type bushing in the other
end. The socket bushing is snap-fit over the ball stu d
on t he left pivot cr ank a rm, while th e sleeve bushing
is fit over th e longer ba ll stu d on the wiper motor
crank ar m. The right (passenger) side drive link has
a pla st ic socket-t ype bu sh ing on each end. One end of
this drive link is snap-fit over the exposed end of t he
longer ball stu d on the wiper m otor cran k arm a nd
captur es t he sleeve bushing end of the left drive link
benea th it, while the ot her end is sn ap-fit over the
ball stud on the right pivot cra nk a rm.
• Modul e Br acket - The linkage module bracket
consists of a long tubula r steel main member that is
crimped to a molded plastic pivot bracket at each end
where th e wiper pivots are secu red. A stamped steel
mounting pla te for the wiper m otor is secured with
welds near the center of t he ma in member a nd is
then secured with screws to the underside of the cowl
top panel.
• Motor C r an k Ar m - Th e wiper motor crank
arm is a st amped steel unit with a roun d hole on the
dr iven en d t hat is secured t o the wiper motor outpu t
sh aft with a nu t, a nd a long ball stud secured to the
drive end.
• Pivot - Th e two molded plastic wiper pivot
brackets are secu red t o th e en ds of the linkage m od-
ule bra cket tubula r member. The cran k arms tha t
extend from the bottom of th e pivot sha fts each ha ve
a ba ll stud on t heir en d. The upper end of each pivot
sh aft where t he wiper arms will be fast ened each is
tapered and externally serrated with a threaded stud
at the top where the wiper arm s ar e secu red by a
nut. Ea ch pivot sha ft opera tes within a housing
formed in th e pivot bracket featu ring a la rge external
flan ge near its cent er an d external th reads near the
top. Th e pivot housings are secured to the outer sur-
face of th e cowl top pan el by a lar ge washer and a
nut thr eaded onto the out side of the hou sing wher e it
pr otrudes through the cowl t op.
The wiper linkage module cannot be a djust ed or
repaired. If any componen t of the linkage m odu le is
faulty or damaged, th e ent ire wiper linkage modu le
unit must be r eplaced.
OPERATION
The wiper linkage oper ation is cont rolled by the
output of the wiper mot or through the wiper mot or
crank arm . The wiper mot or crank ar m, the two
wiper dr ive links, and the two wiper pivots mechan-
ically convert the rotary output of the wiper motor to
the ba ck and forth wiping motion of th e wiper arms
and blades on th e glass.
REMOVAL
(1) Disconn ect and isolate the battery nega tive
cable.
Fig. 28 Wiper Linkage Module
1 - PIVOT SHAFT (2) 4 - PIVOT CRANK ARM (2)
2 - PIVOT SHAFT HOUSING (2) 5 - DRIVE LINK (2)
3 - MODULE BRACKET 6 - MOTOR CRANK ARM
8R - 28 WIPERS/WASHERS VA
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