1973 OPEL 1900 Service Manual

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1 D- 361973 OPEL SERVICE MANUALI‘\
Figure 1 D-27 Alternator - Exploded View301D27

WINDSHIELD WIPERSlE- 37WINDSHEILD WIPERS
ALL MODELS
CONTENTS
Subject
DESCRIPTION AND OPERATION:
Windshield Wiper Motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DIAGNOSIS:
Windshield Wiper
. . . . . . . . . . . . . . . . . . . , , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MAINTENANCE AND ADJUSTMENTS: (Not
Applicable)
MAJOR REPAIR:Wiper Transmission
- 1900 and Manta. . . . . . . . . . . . . . . . . . . .W/per Transmission
- GT. . . . . a.* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Disassembly of Wiper Motor
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cleaning and Inspection of Parts
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Assembly of Wiper Motor
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Installation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPECIFICATIONS:
GeneralSpecifications
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Torque Specifications
. . . . . . . a.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DESCRIPTIOfV AND OPERATION
GENERAL;DESCRlPTlDNThe two-sbeed wiper consists of a round shaped per-
manent magnet type motor and speed reduction gear
box. IOPERATldN
=The wipei motor is controlled through a dash
mounted &itch on all cars. The Rallye and GT, in
addition tb the dash mounted switch, also have a
switch moimted in conjunction with the windshield
washer fodt pump. Depressing the washer pump will
allow the bipers to operate while the pump is de-
pressed. i
DIAGNO;SIS
PRELIMINj9RY INSPECTION
1. Make
c&in of firm wire connections at wiper
motor fuse block and wiper switch.
Page No.
1 E-37
1 E-37E-38
E-38
E-40
E-41
E-4 1E-42
1 E-43
1 E-432. Check to see that the fuse is not blown.
3. Be sure wiper motor is not loose on fire wall.
4. With the yellow wire disconnected from terminal
No. 53 on the
wi@er motor, turn the ignition switch
and wiper switch to the on position and check volt-
age available to the wiper motor. There should be 12
volts available at the durple wire with a properly
charged battery.
Checking Wiper Operation1. Turn ignition switch on and engage wiper switch
to see if wiper motor will operate.
2. If wiper action is slow or inoperative, turn swit-
ches off and detach wiper control
inn from crank
arm.3. Operate wiper manually checking for excessive
bind in linkage. Correct if necessary.

1 E- 381973 OPEL SERVICE MANUAL
4. Turn switch on to see if wiper niotor will function
with wiper linkage’detached. If wiper motor will ndt
run, disconnect connector at wiper motor and co?-
nect hot lead from battery to terminal No. 53 onwiper motor. If wiper motor runs, the wiper switch
is faulty or there is an break in the lead wire. If wiper
motor still will not run, remove and bench test.
MAJOR REPAIRWIPER TRANSMISSIONS
Removal (1900 and Manta)1. Remove wiper blade (2).
2. Remove the wiper transmission retaining nut,
washer, and rubber seal ring. See .Figure lE-1.
Figure lE-1 Crank Arm Retaining Nut3. Remove instrument cluster housing.
If only left wiper transmission is to be serviced, it can
be done without removing any ‘other instrument
panel components. If the right side, or both, trans-
missions are to be serviced, then
it will be necessary
for complete instrument panel removal. On the Ral-
lye models, the gauge carrier must also be remove&Qn all
1900 and Manta Models the defroster ducts
are secured to the instrument panel cover, by two (‘2)
spring clips, and should not be removed from
dayhcover. Remove cover and duct as, a unit.
4. Remove retaining clips from transmission co;-netting rod pins. Pull connecting rods off pins. See
Item “A”, Figure lE-2.
5. Remove the screws securing the wiper transmis-
sion to the inner side of the cowl (Items “B”, Figuie
13), and remove the transmission assemblies.I
Figure lE-2 Connecting Rod Retaining Clips
Installation1. Place wiper transmissions into position at cowl
and install holding screws.
2. Push connecting rods onto transmission cranking
arm pins and install retaining clips. See Figure lE-2,
Item “A”.
3. Reinstall dash and instrument cluster parts.
4.
1nst:all the rubber seal ring, washer, and transmis-
sion retaining nut. See Figure IE-1.
5. Install wiper blades and check the position of the
blades in the park position. See Figure lE-3.
Figure lE-3 Wiper Blades in Park Position
Removal and Installation of GT W/per Transmission1. Remove nuts and remove both wiper
arms. See
Figure lE-4.
2. Remove three (3) bolts from each windshield

WINDSHIELD WIPERSlE- 39
Figure 1 E-4 Removing Wiper Arms-GT
wiper transmission and drop wiper transmissions
from defleCtor panels. See Figure lE-4.3. Remowscrews from left and center deflector pan-els. See Figures lE-5 and 6.
Figure
l$-5 Removing Screws from Left Deflector
I
Pa%?1
. .;Figure
lE-6 - Removing Screws from Center Deflector
Pall-Z!14. Remove center deflector panel. Remove left de-
flector panel together with wiper motor and com-
plete wiper linkage. See Figure lE-7.
Figure
lE-7 - Removing Left Panel, Motor and Linkage
5. Remove nut and lockwasher from wiper motor
shaft and remove complete wiper linkage.
6. Install in reverse sequence, checking all parts for
wear. Replace any worn parts.
WIPER MOTOR OVERHAUL
Removal of Wiper Motor1. Remove the wiper motor to crank arm attaching
nut, this is done from the inside of vehicle. The nut
is located on inner side of cowl, just above the steer-
ing column. See Figure lE-1.
2. Pull crank arm off motor drive shaft.
3. Remove three (3) wiper motor attaching screws.
See Figure lE-8.
Figure 1 E-8 Wiper Motor Attaching Screws
4. Remove motor from cowl.
5. Remove wiper motor electrical connector from
motor.

1 E- 40 1973 OPEL SERVICE MANUALDisassemblyI
1. Remove two (2) motor housing attaching
screw$(Item No. 4) and two (2) angle brackets (Item No.
3). See Figure lE-9.
Figure 1 E-S Removing Motor Housing Attaching
SCFS”JSFigure
1 E-l 0 Transmission and Armature Removed
from Motor Housing2. Remoyz transmission housing together with arma-
ture from motor housing. See Figure lE-10. It may
be necessary to hold armature in transmission hous-
ing with a screw driver.
3.
Rem~ove armature from transmission housing.
4. Remove five (5) transmission housing cover
screws. See Figure lE-11.Figure 1 E-l 1 Remove Transmission Housing CoverSCEWS
5. Remove cover, gasket and driven gear from trans-
mission housing. See Figure IE-12. Remove pivot
ball from driven gear. See Figure lE-15.
Figure 1 E-l 2 Remove Driven Gear
6. If required, remove brushes.
a. To remove positive brushes, cut brush leads off at
brush holder. See Figure lE-13.
b. To remove negative brush, remove brush retaining
screw from commutator end frame. See Figure
lE-
14.

WINDSHIELD WIPERSlE-41
Figurk 1 E-l 3 Cut Off Positive Brush Leads
i
Figure iE-14 Remove Negative Brush Retaining
S.X?WI
Cleaning apd Inspection of PartsWith the ekception of electrical parts and bushings,
clean all components in a cleaning solvent.
1. Check irmatare windings for ground, or open
circuit. If
b ground or open circuit is evident, the
armature must be replaced. If the armature checks
out, the c 2. Check brush springs. Spring pressure of new
brushes should be 6.35 to 8.47 ounces. Spring pres-
sure of worn brushes should be at least 3.5 ounces.
In case of /ower spring pressure, replace springs.
3. Check blushes for wear and replace if necessary.
Minimum brush length should be
.24’inch.4. Check d$ven gear for wear and replace if neces-
sary.
Assembly l/8inch layer’ of grease meeting GM Specification
02383. I
2. Install
d&en gear into housing3. Apply a small amount of grease to ball cavity of
driven gear and insert ball. See Figure lE-15.
Figure lE-15 Insert Ball into Driven Gear
4. Install transmission housing cover. See Figure
lE-
16.2. DRIVEN GEAR
3. CONTACT SPRINGS
4. TRANSMISSION
HOUSING COVER
Figure 1 E-l 6 Install Transmission Housing
Cover5. Solder positive brush lead(s) to brush holder(s).
Hold brush lead with needle nose pliers to prevent
solder from running up wire strands. See Figure
lE-
17.6. Install negative brush
7. Apply a small amount of grease to end of armature
shaft. Lightly oil armature shaft.
8. Insert brush springs and brushes into brush hold-
ers. Slide armature into housing, taking care not to
damage brushes.

1 E- 421973 OPEL SERVICE MANUAL
Figure 1 E-l 7 Solder Positive Brush Lead to Brush
Holder
9. Install motor housing over armature so that large
drain hole on housing is facing downward when
mb-tor assembly is installed in car.
InSert angle brackets
into motor housing and tighten attaching screws. Be
sure to reseal angle brackets to motor housing after
retaining screws are tightened.
10. Connect assembled motor with an ammeter and
adjust end play of armature shaft grid drive gear. To
do so, turn in the respective adjusting screw until the
current consumption increases. Then back off adjust-
ing screw
l/2 turn. Secure driven gear adjusting
screw with lock nut and armature adjusting screw
with paint. See Figures lE-18 and lE-19.
Installation1. Connect wiper motor electrical connector to mo-
tor.
2. Place wiper motor in position on cowl and secure.
Torque attaching nuts 14 to 17 in.lbs.
3. Place crank arm on motor drive shaft and torque
nut as follows: Bosch and SWF, 70 to 87 imlbs. and
Siemans, 122 to 139 in.lbs.Figure 1 E-l
8 Adjusting Armature End Play
Figure
lE-19 Adjusting Driven Gear End Play
4. Check the position of the windshield wiper blades
for proper position after the crank arm is attached.
See Figure lE-3 for the proper distance the blades
should be from the windshield molding in the park
position.

WINDSHIELD WIPERSlE-43SPEhFlCATlONS
IGENEPAL SPECIFICATIONSiRated Voltage .
..__.,,,.,,,......................................,.,,... ~ __..__...__...._..................................... 12 VDC
,Test Voltage ___..................................................,...................,..,..................................... 13 VDC
Current Draw (Amps)
;No Load_, Low Speed
..__...__..__..,_,,..,,,.,,,,..,....................,,.................................................................. 1.5
I Hieh
SDeed .___,,...,,..,,._.._..............,...............................,,,..,,,.............................................. 2.2lLock:d
’
:Low Speed ___.,._,,,..,,,....................................,,.........,,..,,,.,,,,..................,,,........................... 16
,
High Speed . . . . . . . ..___.._........................................................................................................... 17
~Minimum Commutator Diameter __.................,,,,........................................................... .86 in.
‘Brush Spring Pressure
:New Brush
. . . . . . .._...__...................................................................................... 6.35 to 8.47 oz.Used Brush
..__,,,...,,.,,..................,...............................,,.,,,,.,,....................... 3.5 oz. minimum‘MinimumBrushLength
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24in.The windshield wiper motor instead of field coils has a permanent magnet
(oxide magnet). This motor design is sturdier and consumes less current.TORQirE SPECIFICATIONS
‘CrankArmtoMotorDriveShaft. . . . . . . . . . . . . . . . . . . . . . . . . .70to87in.lbs.iper Motor to Cowl
,
,.,,,.,,,,..,,............,..,,.,,.........................................14 to 17 in.lbs.