Bosch PS21 Motor Replacement

Введение

If the motor becomes faulty, it can be replaced in a simple manner. Bosch offers a new motor to purchase for the replacement. When disassembling the drill, make sure to have flat, clean working surface. Carefully follow this guide to replace the faulty motor.

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Шаг 1 Battery

Bosch PS21 Motor Replacement, Battery: шаг 1, изображение 1 из 1

Pinch the two release tabs on the sides of the battery, and slide the battery out.

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Шаг 2 Motor

Bosch PS21 Motor Replacement, Motor: шаг 2, изображение 1 из 2

Bosch PS21 Motor Replacement, Motor: шаг 2, изображение 2 из 2

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.

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Шаг 3

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.

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Шаг 4

Starting at the rear of the drill, use a wedge to separate the two halves of the outer case at the parting line.

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Шаг 5

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.

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Шаг 6

Bosch PS21 Motor Replacement: шаг 6, изображение 3 из 3

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.

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Шаг 7

Bosch PS21 Motor Replacement: шаг 7, изображение 3 из 3

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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