If no fault is found in the above described test, carry out
this test with reversed polarity (see illustration).
NOTE: Test voltage 6--12 volts DC.
DIODE PLATE INSTALLATION
Pay attention to perfect insulation connections "B+", "D+"
and the positive diode heat sink in respect to end frame.
Install diode plate as shown and tighten screws.
IMPORTANT: Use only rosin core solder.
Make sure that no solder seeps inside diode plate.
PRESSING BALL BEARING ONTO ROTOR
For pressing on, use a sleeve which presses against the
ball bearing inner race.
IMPORTANT: Never press onto drive end frame;
damage may result.