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Bosch PS21 Motor Replacement

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  1. Bosch PS21 Motor Replacement, Battery: crwdns2935265:01crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • Pinch the two release tabs on the sides of the battery, and slide the battery out.

  2. Bosch PS21 Motor Replacement, Motor: crwdns2935265:02crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Bosch PS21 Motor Replacement, Motor: crwdns2935265:02crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • After removing the battery pack, locate the clip that connects the two halves of the outer casing shown in the picture. Remove the clip using angled tweezers or a similar tool. Save the clip for reassembly.

  3. Bosch PS21 Motor Replacement: crwdns2935265:03crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • Locate the eight 5.5 mm screws as shown in the picture.

    • Remove each screw using a small Phillips head screw driver. Save all the screws for reassembly.

  4. Bosch PS21 Motor Replacement: crwdns2935265:04crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Bosch PS21 Motor Replacement: crwdns2935265:04crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Starting at the rear of the drill, use a wedge to separate the two halves of the outer case at the parting line.

  5. Bosch PS21 Motor Replacement: crwdns2935265:05crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Bosch PS21 Motor Replacement: crwdns2935265:05crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • The motor and trigger assembly are connected by two wires. Do not pull or put tension on these wires.

    • Lift up the metal tab as shown in the first picture to free the trigger assembly.

    • Gently dislodge the motor and trigger assembly from the drill case. Remove the components as one piece, shown in the second picture.

  6. Bosch PS21 Motor Replacement: crwdns2935265:06crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Bosch PS21 Motor Replacement: crwdns2935265:06crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Bosch PS21 Motor Replacement: crwdns2935265:06crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Be sure to not grip the pliers too firmly, as it could cause damage to the wire connectors.

    • Firmly secure the motor assembly in place. Using a set of pliers, carefully pull the black wire connector away from the motor. Repeat this action with the red wire connector.

    • The wire connections on the motor are color coded, matching the color wire that connects there.

  7. Bosch PS21 Motor Replacement: crwdns2935265:07crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Bosch PS21 Motor Replacement: crwdns2935265:07crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Bosch PS21 Motor Replacement: crwdns2935265:07crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Once the wires have been disconnected, separate the trigger mechanism from the motor assembly.

    • Place your hands on each end of mechanism and carefully pull apart the assembly in order to separate the gearbox from the motor.

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To reassemble your device, follow these instructions in reverse order.

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Daniel Sebastian

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IUPUI, Team 1-2, Harley Spring 2016 crwdns2935289:0IUPUI, Team 1-2, Harley Spring 2016crwdne2935289:0

IUPUI-HARLEY-S16S1G2

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