8. Move the continuity tester alligator clip to the black wire of the DC cord.
9. Place the continuity tester probe on the negative (-) prong of the DC plug. You should register continu-
ity (bulb should light). If you do not register continuity, cord and plug must be replaced.
10. Place the continuity tester probe on the unmarked (middle) prong of the DC plug. You should register
no continuity (bulb should not light). If you do register continuity, cord and plug must be replaced.
11. Move the alligator clip to the blue wire of the DC cord. Check for continuity at the middle prong; it should
read continuity.
TRANSFORMER
The PowerDrive battery charger’s transformer has two coils; a primary coil and a secondary coil
(Figure 19-13, Page 19-19).
PRIMARY COIL
1. Disconnect terminals from transformer tan primary leads (4) and (6).
2. Touch the continuity tester leads on the primary coil leads. You should register continuity (bulb should
light). If you do not register continuity, replace the transformer.
SECONDARY COIL
1. Remove the transformer secondary coil lead (tan) from the upper terminal (1) of the rectifier assembly.
2. Remove the other transformer secondary coil lead (tan) from the bottom terminal (5) of the rectifier
assembly and place the alligator clip on the ammeter buss bar (7). Touch the continuity leads to each
secondary coil lead (tan). You should register continuity (bulb should light). If you do not register conti-
nuity, replace transformer. Be sure that the fuse is intact and not blown.
RELAY
1. Remove the black and tan wires from the contact terminals of the relay (Figure 19-13, Page 19-19).
Place continuity tester leads on contact terminals of the relay. Tester should show NO continuity (bulb
should not light). If it shows continuity, the relay contacts are welded shut and the relay must be
replaced.
2. With batteries connected, insert the DC plug into a receptacle. Place continuity leads on contact termi-
nals of relay. Tester should show continuity (bulb should light). If tester does not show continuity, the relay
must be replaced.
AMMETER
To check continuity of the ammeter:
1. Disconnect the black wire from the left ammeter post (as viewed from inside the charger).
2. Place the continuity tester alligator clip on one of the ammeter posts.
3. Place the continuity tester probe on the other ammeter post. The tester should show continuity (bulb
should light). If the tester does not show continuity, the ammeter must be replaced.
19-21
DANGER
• HIGH VOLTAGE! DO NOT ALLOW SECONDARY COIL LEADS TO TOUCH EACH OTHER.
THERE ARE APPROXIMATELY 120 VOLTS AC PRESENT.
WARNING
• BEFORE PERFORMING THIS TEST, BE SURE THE AC PLUG IS NOT PLUGGED IN.
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