Generator Armature Removal And Replacement Procedure - Lincoln Electric SAE-300 HE Service Manual

LINCOLN ELECTRIC

GENERATOR ARMATURE REMOVAL AND REPLACEMENT PROCEDURE

Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized
repairs performed on this equipment may result in danger to the technician or machine operator and will
invalidate your factory warranty. For your safety and to avoid electrical shock, please observe all safety
notes and precautions detailed throughout this manual. If for any reason you do not understand the test
procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department
for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
TEST DESCRIPTION
This procedure will aid the technician in the removal and replacement of the Welding Generator Armature.
MATERIALS NEEDED
Rope Sling
Miscellaneous Hand Tools
Wiring Diagram
REMOVAL PROCEDURE
1. Turn off the engine on the SAE-300 HE machine.
2. Perform the Alternator Rotor Removal Procedure.
3. Perform the Alternator Stator Removal Procedure.
4. Perform the Generator Frame Removal Procedure.
5. Using the rope sling, support the armature. Position the sling at the center of gravity of the
armature assembly. See Figure F.28.
6. Remove the eight screws securing the blower paddle segments and the outer diameter of the
flexible coupling disk to the flywheel.
7. With the armature securely supported in the sling, unlock it from the flywheel by carefully rotating
it 1/8 of a turn in either direction.
REPLACEMENT PROCEDURE
1. Carefully inspect the mating surfaces of the flywheel and armature coupling parts. These surfaces
must be clean and undamaged.
2. Support the armature in a rope sling and carefully move it into position and align it to the flywheel.
3. Rotate the armature 1/8 of a turn, in either direction, to engage the locking mechanism and line up
the bolt holes. Be certain that the coupling plate is fully and cleanly seated in the flywheel.
4. Replace the eight screws and four blower segments. Tighten the screws.
5. Perform the Generator Frame Replacement Procedure.
6. Perform the Alternator Stator Replacement Procedure.
7. Perform the Alternator Rotor Replacement Procedure.
8. Perform the Retest After Repair Procedure.
SAE-300® HE Service Manual
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