Wiper Arm Remove/Install; Wiper Arm Puller - Typical; Operation; Removal - Mercedes-Benz 2005 Sprinter Service Manual

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8R - 14
WIPERS/WASHERS
WIPER ARM (Continued)

OPERATION

The wiper arms are designed to mechanically
transmit the motion from the wiper pivots to the
wiper blades. The wiper arm must be properly
indexed to the wiper pivot in order to maintain the
proper wiper blade travel on the glass. The tapered
mounting hole in the wiper arm pivot end interlocks
with the serrations on the outer circumference of the
wiper pivot shaft, allowing positive engagement and
finite adjustment of this connection. The mounting
nut locks the wiper arm to the threaded end of the
wiper pivot shaft. The spring-loaded wiper arm hinge
controls the down-force applied through the tip of the
wiper arm to the wiper blade on the glass. The hook
formation on the tip of the wiper arm provides a cra-
dle for securing and latching the wiper blade pivot
block to the wiper arm.

REMOVAL

(1) Disconnect the washer nozzle hose from the
elbow fitting on the cowl top panel near the pivot end
of the wiper arm (Fig. 16).
Fig. 16 Wiper Arm Remove/Install
1 - PIVOT COVER
2 - NUT
3 - PIVOT SHAFT
4 - WASHER NOZZLE HOSE
5 - ELBOW FITTING
6 - WIPER ARM
CAUTION: The use of a screwdriver or other prying
tool to remove a wiper arm may distort it. This dis-
tortion could allow the arm to come off of the wiper
pivot during wiper operation, regardless of how
carefully it is reinstalled.
(2) Unsnap the end of the pivot cover from the
wiper blade pivot end, then pull the cover away from
the wiper arm hinge pin to remove the cover from
the wiper blade.
(3) Remove the nut that secures the wiper arm to
the wiper pivot shaft.
(4) If necessary, use a suitable battery terminal
puller to disengage the wiper arm from the wiper
pivot shaft (Fig. 17).
Fig. 17 Wiper Arm Puller - Typical
1 - WIPER ARM
2 - WIPER PIVOT SHAFT
3 - BATTERY TERMINAL PULLER
(5) Remove the wiper arm pivot end from the
wiper pivot shaft.

INSTALLATION

NOTE: Be certain that the wiper motor is in the park
position before attempting to install the wiper arms.
Turn the ignition switch to the On position and
move the right (wiper) control stalk of the multi-
function switch to its Off position. If the wiper piv-
ots move, wait until they stop moving, then turn the
ignition switch back to the Off position. The wiper
motor is now in its park position.
NOTE: The wiper arms and wiper blades for this
model are both unequal in length, with the longer
arm and blade being installed on the left (driver)
side of the windshield.
(1) The wiper arms must be indexed to the wiper
pivot shafts with the wiper motor in the park posi-
tion to be properly installed. Position the wiper arm
pivot ends onto the wiper pivots so that the lower
edge of the wiper arm tip is aligned with the black
wiper alignment line located near the lower edge of
the windshield glass (Fig. 16).
(2) Once the wiper blade is aligned, lift the wiper
arm away from the windshield slightly to relieve the
spring tension on the pivot end and push the pivot
hole in the pivot end of the arm down firmly and
VA

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