Lincoln Electric RANGER 305G EFI Service Manual page 47

LINCOLN ELECTRIC
E. Lead 5 and lead W1, W2 or W3. This checks for a connection between the auxiliary winding and
the weld winding. See Wiring Diagram.
F. Lead 7 or 9 and lead W1, W2 or W3. This checks for a connection between the exciter winding
and the weld winding. See Wiring Diagram.
If any of the above readings is less than 500,000 (500K) ohms, check for damaged, contaminated or
shorted wiring or components between the test points and the stator winding. If necessary,
disconnect and isolate the stator leads as close to the stator winding as possible. See Wiring
Diagram. If the low resistance is determined to be between the windings within the stator, the
stator is defective and should be replaced*.
*NOTE: The field bridge rectifier and field capacitor may appear to function normally when tested
independently. But may malfunction when placed under the stress of normal operation. For this
reason, it is recommended that the bridge rectifier and capacitor be replaced with known good
components before replacing the stator.
8. When testing is complete connect all preciously disconnected leads and plugs.
9. Perform the Case Cover Replacement Procedure
Ranger® 305G EFI Service Manual
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