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Mastercraft 17FY2-MC Cordless Drill Teardown

crwdns2935163:0crwdne2935163:0 Ian Lang (crwdns2935087:03crwdne2935087:0)
crwdns2935165:0November 16, 2017crwdne2935165:0
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Mastercraft 17FY2-MC Cordless Drill Teardown

crwdns2935163:0crwdne2935163:0 Ian Lang (crwdns2935087:03crwdne2935087:0)
crwdns2935165:0November 16, 2017crwdne2935165:0
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  • crwdns2935171:0crwdne2935171:0 647

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This teardown shows the disassembly of the Mastercraft 17FY2-MC Cordless Drill/Driver. The guide shows all components after disassembly and explains their functionality.

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  1. Mastercraft 17FY2-MC Cordless Drill Teardown, Remove the screws from the casing: crwdns2935265:01crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Use a Phillips head screwdriver to remove the 6 screws from the casing

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  2. Mastercraft 17FY2-MC Cordless Drill Teardown, Remove the battery: crwdns2935265:02crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Mastercraft 17FY2-MC Cordless Drill Teardown, Remove the battery: crwdns2935265:02crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Mastercraft 17FY2-MC Cordless Drill Teardown, Remove the battery: crwdns2935265:02crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • First remove the two yellow twist-on connectors from the bottom of the handle, then bend the wires away from each other to prevent accidental reconnection

    • This disconnects the negative side of the battery, and removes the danger of touching other parts of the drill while the battery is connected

    • Then remove the two yellow twist-on connectors from the top of the drill, and remove the entire battery pack

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  3. Mastercraft 17FY2-MC Cordless Drill Teardown, The battery pack: crwdns2935265:03crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • The drill uses a battery pack consisting of four NiCd cells each with a nominal voltage of 1.2V. This gives a total pack voltage of 4.8V when all batteries are connected in series.

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  5. Mastercraft 17FY2-MC Cordless Drill Teardown, Remove motor assembly from casing: crwdns2935265:04crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Mastercraft 17FY2-MC Cordless Drill Teardown, Remove motor assembly from casing: crwdns2935265:04crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Slide the charging port, trigger switch, and direction switch out of their slots in the casing. Then remove the entire motor assembly from the casing

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  6. Mastercraft 17FY2-MC Cordless Drill Teardown, Remove the drill mechanism from the motor: crwdns2935265:05crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Mastercraft 17FY2-MC Cordless Drill Teardown, Remove the drill mechanism from the motor: crwdns2935265:05crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Mastercraft 17FY2-MC Cordless Drill Teardown, Remove the drill mechanism from the motor: crwdns2935265:05crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Remove three screws on the motor with a Phillips head screwdriver to disconnect the drill mechanism from the motor

    • The DC motor (second image) spins a shaft connected to a small gear.

    • The drill mechanism (third image) uses a set of gears to provide more torque to the drill head.

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  7. Mastercraft 17FY2-MC Cordless Drill Teardown, Motor control electronics: crwdns2935265:06crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Mastercraft 17FY2-MC Cordless Drill Teardown, Motor control electronics: crwdns2935265:06crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Mastercraft 17FY2-MC Cordless Drill Teardown, Motor control electronics: crwdns2935265:06crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • The three parts of the controlling electronics are (from left to right in the first image): the charging port, the trigger mechanism, and the direction switch.

    • The charging port (second image) charges the battery when a DC power supply is inserted into the connector. The port also lights up a red LED while charging.

    • The trigger switch controls the speed of the motor by connecting more of the batteries as the trigger is depressed further.

    • The direction switch controls the polarity of the voltage connected to the motor, which spins the motor either clockwise or counterclockwise.

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  8. Mastercraft 17FY2-MC Cordless Drill Teardown, Parts overview: crwdns2935265:07crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • This concludes the teardown of the Mastercraft 17FY2-MC Cordless Drill

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Ian Lang

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