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TROUBLESHOOTING & REPAIR
POWER MODULE (CHOPPER) PC BOARD
REMOVAL AND REPLACEMENT (continued)
FIGURE F.42 – POWER MODULE PC BOARD
COPPER STANDOFF
POWER MODULE
PC BOARD
CAPACITOR
TERMINALS
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TEST PROCEDURE
1.Turn the engine off.
2.Remove the front right or left case side, depending on which power module PC board you are removing.
3.Perform the Capacitor Discharge
Procedure.
4.Perform the Output Panel Removal
Procedure.
5.With the 3/8" allen wrench, remove the top and bottom cap screws from the power mod- ule PC board. See Figure F.42.
6.With the 7/16" wrench, remove the three bolts, lock washers, and flat washers from the power module PC board.
NOTE: The top, long, bolt has a copper standoff on the opposite side of the board. Be sure to place this standoff between the heat sink and the PC board at reassembly.
7.Remove the nuts and flat washers from the capacitor terminals and remove the flat leads.
8.Remove the power module board.
REPLACEMENT PROCEDURE
1.Apply Penetrox
2.Install the three bolts, lock washers, and flat washers to mount the power module PC board to the heat sink.
IMPORTANT: The top, long, bolt has a copper standoff on the opposite side of the board. Be sure to place this standoff between the heat sink and the PC board.
3.Install the top and bottom allen head cap screws. Torque the screws to
4.Install the leads, flat washers, and nuts to the capacitor. Torque the nuts to
5.Perform the Output Panel Replacement
Procedure.
6.Install the case side(s).
