Opel 1900 1973, Service Manual

Page: 62 / 625

WINDSHIELD WIPERS
1 E-l 3 Cut Off Positive Brush Leads
Figure Remove Negative Brush Retaining
Cleaning Inspection of Parts
With the of electrical parts and bushings,
clean all components in a cleaning solvent.
1. Check windings for ground, or open
circuit. If ground or open circuit is evident, the
armature
be replaced. If the armature checks
out, the can be undercut.
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
spring pressure, replace springs.
3. Check for wear and replace if necessary.
Minimum brush length should be
4. Check gear for wear and replace if neces-
s a r y .
Assembly Wiper Motor
1. Fill transmission (driven gear) housing with
inch layer’ of grease meeting GM Specification
02383.
2. Install gear into housing
3. Apply a small amount of grease to ball cavity of
driven gear and insert ball. See Figure
Figure Insert Ball into Driven Gear
4. Install transmission housing cover. See Figure
1 6 .
2. DRIVEN GEAR
3. CONTACT SPRINGS
4. TRANSMISSION
HOUSING COVER
Figure 1 E-l 6 Install Transmission Housing
5. 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
1 7 .
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.