A reading of infinity should be measured. A reading of other
than infinity indicates a stator winding
shorted to ground .
Test 8:
— Test Rotor Diode Assembly
A rotor diode is crimped in series with the rotor windings.
The capacitor protects the diode against high voltage spikes.
The rotor windings, diode, and capacitor may be tested as
follows:
•• Step 1: Testing Rotor Windings
• Locate the connections that retain the diode and
capacitor to the rotor windings (Figure 3.56).
• Remove one end of the connection to electrically
isolate the rotor winding, diode, and rotor capacitor
from each other.
• Set a VOM meter to the ohm scale
• Connect the VOM test probes across the rotor winding
previously disconnected from the rotor diode and
capacitor.
(Briggs & Stratton Power Products
®
“Portable Generator
Rotor/Stator Resistance Tables Pub. #87971 Rev 6 or later)
•• Step 2: Testing Rotor Capacitor
NOTE:
Consult the owners manual of the meter
you are using for capacitor test procedures. Check
the capcitance that is found on the capacitor.
Refer to Figure 3.57:
If any tests are not within specifications:
• Replace the rotor as an assembly.
88
Section 3 • Generator Diagnostics and Adjustments
Portable Generator Familiarization & Troubleshooting Guide
Replace Stator
Figure 3.57 — Testing Rotor Capacitor
Figure 3.56 — Testing Rotor Windings
Содержание 86262GS
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