Lincoln Electric Classic 300 MP Service Manual page 106

LINCOLN ELECTRIC
14. Connect lead 602C to the exciter field diode on the lower control panel. See Wiring Diagram.
15. Connect lead 203A to the 15 amp fuse holder on the lower control panel. See Wiring
16. Connect plug J53 to the oil pressure gauge. See Wiring Diagram.
17. Connect plug J52 to the fuel/hour meter/LED gauge. See Wiring Diagram.
18. Connect plug J51 to the coolant temperature gauge. See Wiring Diagram.
19. Connect the engine control unit (ECU)
Diagram.
20. Using a 3/4" nutdriver and 3/4" open-end wrench, attach the bolt and nut securing the three leads
to the positive output terminal. See Wiring Diagram.
21. Using a 1/2" nutdriver and 1/2" open-end wrench, attach the six nuts securing the heavy leads to
the terminals of the selector switch. See Wiring Diagram.
22. Carefully position the control board assembly into the machine.
23. Using a 3/8" nutdriver, attach the two screws and washers securing the control PCB mounting
bracket to the fuel tank rail.
24. Connect plugs J12, J6, J7, J1 and J2 to the control board. See Wiring Diagram.
25. Replace cable ties as necessary.
26. Carefully route the cables for the caps board, contactor CR1 and CR2 into the cord grip connectors
on the CV box.
27. Using a hammer and slotted screwdriver, tighten the three nuts securing the cord grip connectors to
the CV box.
28. Carefully position contactor CR1 into the CV box and slide the leads off onto the top terminals.
29. Using a 11/16" nutdriver, attach the two nuts securing each of the heavy leads to the top terminals
of contactor CR1. Attach the nuts one at a time. See Wiring Diagram.
30. Using a slotted screwdriver, attach the four screws securing contactor CR1 to the CV box.
31. Connect leads 633 and 634 to the quick-connects of contactor CR1. See Wiring Diagram.
32. Connect leads 630 and 631 to the top terminals of contactor CR2. See Wiring Diagram.
33. Using a slotted screwdriver, attach the screw securing the negative lead to contactor CR2. See
Wiring Diagram.
34. Using a 3/8" nutdriver, attach the nut securing lead GND-F to the CV box. See Wiring Diagram.
35. Using a 7/16" Nutdriver, attach the bolt, lock washer and flat washer securing the positive lead to
the POS terminal of the caps board. See Wiring Diagram.
36. Using a 3/8" nutdriver, attach the four screws, nuts and washers securing the exciter wraparound
cover to the machine.
37. Using a 7/16" nutdriver and a slotted screwdriver, attach the two nuts and screws securing the
cover to the stator frame.
38. Perform the Fuel Tank Replacement Procedure.
39. Perform the Exciter Rotor Replacement Procedure.
40. Perform the Case Cover Replacement
41. Perform the Retest After Repair Procedure.
connector to the engine control unit
Procedure.
Classic® 300 MP Service Manual
(ECU). See Wiring
Diagram.
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