Lincoln Electric SAE-300 HE, Service Manual, Page: 69 / 84

LINCOLN ELECTRIC SAE-300® HE Service Manual
64
ALTERNATOR STATOR 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 Exciter Alternator Stator.
MATERIALS NEEDED
Miscellaneous Hand Tools
Pry Bar
Bearing Grease (Chevron SRI or Equivalent)
Wiring Diagram
REMOVAL PROCEDURE
1. Turn off the engine on the SAE-300 HE machine.
2. Perform the Alternator Rotor Removal Procedure .
3. Carefully remove the roof and doors.
4. Using a screwdriver, remove the wrap-around cover protecting the welding generator brushes and
commutator. See Figure F.26 .
5. Use the wiring diagram to identify all of the wires connected to the alternator stator winding.
Carefully mark these leads, for later reassembly and then disconnect them. Cut cable ties as
necessary.
6. Lift the eight welding generator brushes from the commutator. Note the position of the brushes for
later reassembly.
7. To assure accurate reconnection, carefully mark the heavy leads connected to the brush holders and
then disconnect them. To aid in reassembly, note the way these leads are connected, routed and
positioned.
8. The front panel of the machine can be unbolted and moved to the side to provide the clearance
necessary to remove the exciter stator. This can normally be done by disconnecting only the wires
and cutting only the cable ties necessary to allow the front panel to be moved. Most wiring can
remain connected. Be sure to carefully mark all of the wires that were disconnected to aid in
reassembly.
9. Drain the fuel and store it in an approved container. Disconnect the fuel line from the bottom of
the tank and plug the line to avoid getting dirt or other contaminants into the fuel system. Remove
the fuel tank and the tank mounting rails.
Note the drill spots marking the position of the exciter bracket and the rocker. It is very important