7
7.5
Section 7
Electrical System and Components
Rectifi er-Regulator
The rectifi er-regulator is mounted on the blower
housing. See Figure 7-5. To replace it, disconnect the
plug(s), remove the two mounting screws, and ground
wire or metal grounding strap.
NOTE: When installing the rectifi er-regulator, take
note of the terminal markings and install the
plug(s) accordingly.
Figure 7-6. Connecting Leads to Rectifi er-
Regulator.
4. Plug the tester into the proper AC outlet/power
supply for tester being used. Turn on the power
switch. The POWER light should be illuminated
and one of the four status lights may be lit as
well. See Figure 7-7. This does not represent the
condition of the part.
Figure 7-5. Rectifi er-Regulator.
Testing of the rectifi er-regulator may be performed
as follows, using the Rectifi er-Regulator Tester, (see
Section 2).
NOTE: Disconnect all electrical connections a ached
to the rectifi er-regulator. Testing may be
performed with the rectifi er-regulator
mounted or loose. The fi gures show the part
removed from the engine for clarity. Repeat
the applicable test procedure two or three
times to determine the condition of the part.
1. Connect the tester ground lead (with spring
clamp) to the body of the rectifi er-regulator.
2. Connect the red lead from the tester to the middle
terminal labeled B+.
3. Connect the two black leads from the tester to
both of the outer AC terminals on the rectifi er-
regulator. See Figure 7-6.
Rectifi er-
Regulator
Figure 7-7. Testing the Rectifi er-Regulator with a
Tester.
5. Press the TEST bu on until a click is heard and
then release. See Figure 7-7. Momentarily one of
the four status lights will illuminate indicating
the partial condition of the part.
a. If the OK (green) light comes on the part is
good and may be used.
b. If any other light is displayed* the rectifi er-
regulator is faulty and should not be used.
*NOTE: A fl ashing LOW light can also occur as
a result of an inadequate ground lead
connection. Make certain the connection
location is clean and the clamp is secure.
Red
Lead
Black Leads
Ground
Lead
Power
Switch
Test
Button
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