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This guide shows how to remove and replace the control module for the Dewalt Nailers DCN660D1 2018.
The module is an all-in-one assembly, which includes the trigger mechanism, battery connector, and selector switch board.
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Use a T10 driver to remove the ten screws securing the outer housing.
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Lay the device on its left side (with the belt hook).
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Lift and remove the right housing from the device.
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Remove the lock button from its recess.
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Slide the battery connector out of its recess.
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Remove the switch board from its housing recess.
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Remove the two spring clips from the housing.
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Be sure to route the wires through the yellow groove.
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Be sure to reattach the spring clips.
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Carefully flip the device over.
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Remove the left housing from the device.
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Carefully remove the release button from the device.
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Remove the button spring from the device.
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Use a T25 driver to remove the two screws (one on either side) securing the back support .
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Loosen the two solenoid wires from the back support.
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Pull the back support straight out of the device.
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Use a T10 driver to remove the three screws securing the motor wires
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Use a small flathead screwdriver to pry up and disconnect the sensor connector from the side of the motor.
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Insert the point of a pick tool into the push-in connector's inlet hole, which has the control module wire plugged into it.
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With the pick tool still inserted, pull the red control module wire out of the push-in connector.
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Repeat the previous two steps to disconnect the black control module wire from the push-in connector.
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Unclip the solenoid's red and black wires from the control module's side.
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Lift and remove the control module from the device.
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Reassembly tip: Make sure that the white plastic actuator latches into the black lever arm.
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Remove the white plastic actuator from the control module and transfer it onto your replacement part.
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When you install the actuator, make sure the actuator bar can press the white button on the control module.
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Carefully unclip the clear light pipe from the switch board.
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Transfer the light pipe onto your replacement part.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
