Opel 1900 1973 Service Manual page 55

1 D- 34 1973 OPEL SERVICE MANUAL
one direction, but should not light at all in the otlier
direction. Diodes in each set of three should p&s
current and block current in the 'same directions As
the others in the set. See Figure lD-21.
Removing Diodes
Positive Diodes
1. Press defective diode out of diode support, back-
ing-up support with a sleeve sliglitly larger than the
diode and pushing diode through with a shaft
slightly smaller than diode. See Figure lD-22.
Figure 1 D-22 Removing Diode
Negative Diodes
1. Clip lead from defective diode. Clip lead close
enough to diode so that tool will .function properly.
Figure 1 D-d3 Removing Diode
2. Using Tool J-23526, press diode from support. See
Figure lD-23.
Installing Diodes
Positive Diodes
1. Press new diode into diode support. See Figure
Figure lD-24 Installing Diode
Negative Diodes
1. Using Tool J-23526, press diode into support. See
Figure lD-25. Insert negative diode pigtail lead
through tool pilot.
Alternator Reassembly
1. Clean and inspect all parts. Check brushes. Re-
place them if they have worn
2. Lubricate both bearings with special ball bearing
lubricant.
3. Press rear bearing on rotor shaft and install front
bearing into drive end frame.
4. Assemble stator together with windings into rear
end frame.
5. Install both diode supports.
6. Solder diode connections and ends of stator wind-
ings together. Since diodes are very sensitive to heat,
solder quickly using a very hot soldering iron.
down to 3/8 inch.