Lincoln Electric Cross Country 300 Service Manual page 90

LINCOLN ELECTRIC
13. Check the field bridge rectifier and capacitor, also check the wiring and terminals connecting them.
See Wiring Diagram.
14. Perform the Rotor Resistance And Ground Test Procedure (Static), the Rotor Resistance And
Ground Test Procedure (Dynamic).
15. Perform the Stator Short Circuit And Ground Test Procedure.
16. When the stator short circuit and ground test has been completed, reconnect leads to the field
bridge rectifier. All other stator leads should remain disconnected and isolated at this time.
17. Examine stator wiring for damage, pinched leads, chafed insulation, etc. If necessary, disconnect
and isolate the stator output leads as close to the stator as possible. See Wiring Diagram.
18. All of these disconnected leads should be insulated and/or positioned so they cannot come in
contact with any other wiring or chassis ground and cannot be damaged by moving parts when the
engine is running.
19. Restart the machine and measure the rotor voltage.
20. If rotor voltage continues to read significantly lower than 160 VDC, the stator is probably 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 the capacitor be replaced with known good
components before replacing the stator.
21. Perform the Case Cover Replacement Procedure.
Figure F.42 – Field capacitor terminal locations
FIELD
CAPACITOR
Cross Country™ 300 Service Manual
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