Saab 95 1967, Service Manual

Page: 271 / 610

Switch in position 2
Current goes to the windshield wiper motor (high speed)
and to relay via connections 54 and 53b on the switch.
The current goes through the coil in relay and the coil
attracts the relay contact to the lower position, where-
upon the coil in relay 2 is actuated and both relay con-
tacts are pulled downwards. Via the lower relay contact,
current is provided to the motor for the windshield wip-
ers, whereas the upper contact breaks the connection be-
tween terminals 873 and 87 to avoid short circuting when
the contact device in the motor interconnects connec-
tions 53 and 31 b. A diode is connected before connec-
tion 3 on the windshield wiper motor and serves to pre-
vent current from going "backwards" through the extra
winding in the wiper motor and thus switching on the
headlight wipers when the windshield wipers are operat-
ing at low speed (position 1).
Switch in position 3
The same functions as in position 2, but the switch now
connects connections 54c with earth and by this means
both pump motors are engaged.
Switch in position 4
When the switch lever is moved towards the steering
wheel, a spring loaded contact is activated and switches
on both pump motors by earthing terminal 54c. At the
same time, the headlight wipers are also switched on in
that connection 85 on relay 2 is connected to earth via
relay 1 (the contact in this relay in the upper position)
and connection 54c.
Electrical connection and operation, as from model 1972
As from model 1972, the switch for wipers/washer has
been changed. The manouvre relay (1) and the diode have
been despensed with. Regarding the wiring, see group 371.
NOTE
For normal use of the wipers, a fuse for a maximum
current of 3 amp. is to be fitted in order to avoid
damage to the wiper motor if the wipers freeze on-
to the glass.
While testing the assembly (dry headlight glass), an
8 amp. fuse may be temporarily fitted.
WIPER MOTOR
Removing
1. Remove the left grille plate (as from model 1974, the
grille).
2. Unscrew the nut on the wiper motor spindle. Undo
the push rod from the motor crank arm.
3. Disconnect the cable connections at the wiper motor
and up to and incl. model 1973, remove the washer
container.
4. Remove both motor retaining screws and lift out the
motor .
Installing
1. Mount the crank arm to the motor, if it has been re-
moved. Tighten the crank arm screw to a torque of 7.2
ft.-lb. (10 Nm, 1.0 kpm) and lock with Loctite.
2. Place the motor and mount the push rod to the crank
arm. Refit the screws and tighten the spindle nut.
3. Connect the cables, see ill. and test the wipers.
CABLE CONNECTIONS AND CABLE COLORS, HEADLIGHT
WIPER MOTOR
1. Brown to 53
2. Yellow to 31b
3. Red to 538
4. Black to 31
4. Remount the grille and up to and incl. model 1973,
the washer container.
3‘ I 363-5
FObr 1977