Lincoln Electric SVM175-A - page 108

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TROUBLESHOOTING & REPAIR
F-54 F-54
RANGER 305D
STATORVOLTAGE TESTS (continued)
Totest the 42 VAC wire feeder winding:
1. Connect the voltmeter probes to pins “I” (lead
41A) and “K” (lead #42A) of the 14 pin
Amphenol. See Figure F.12.
2. Start the engine and run it at high idle (3625
to 3675 RPM).
3. The AC voltage reading should be between
40 and 50 VAC.
4. If these voltage readings are not within the
specified limits, check for a tripped or defec-
tive circuit breakers, loose connections, or
broken wires between the test points and the
stator windings. Ifthere are no wiring prob-
lems, and the circuit breakers are not tripped
or defective, the stator is defective and
should be replaced.
Totest the three-phase weld winding:
1. Locate weld winding leads W1, W2, and W3
wherethey connect to the three-phase output
bridge rectifier. See Figure F.13. See wiring
diagram.
2. Start the engine and run it at high idle (3625
to 3675 RPM).
3. Check for about 60 to 65 VACfrom leads W1
to W2, W2 to W3, and W1 to W3.
4. If these voltage readings are not within the
specified limits, check for loose connections
or broken wires between the test points and
the stator windings. If there are no wiring
problems, the stator is defective and should
be replaced.
* These values ar maximum for a cold machine.