Starter motor

STARTER MOTOR

Tht starter motor cranks the engine overcoming its inertial forces and frictions and bringing it to a determine rpm to start the formation of the mixture necessary for combustion and thus autonomous motion of the engine.

The motion is transmitted by a d.c. electric motor, operated by the battery, through a coupling pinion which turns the toothed gear on the engine flywheel.

1. Pinion
2. Idle roller gear
3. Engagement lever
4. Energising winding
5. Relay
6. Rotor
7. Flywheel toothed gear

Due to an idle gear coupling, the pinion is disengaged when the main engine turns faster than the motor. A relay energised by the motor current engages the pinion through a fork.

The starter motor installed is of the type with translation and screwing of the pinion with a relay housed directly above the motor itself.

REMOVING/REFITTING

• Set the car on a lift.
• Disconnect the battery (-) terminal.

1. Disconnect the electrical connection of the lambda sensor.

1. Raise the car, slacken the fastening screws and remove the reinforcement bracket.
2. Remove the front section of the exhaust pipe complete with lambda sensor after slackening the fasten-

1. Slacken the screws fastening the power steering box to the suspension crossmember.

1. Disconnect the electrical connections from the starter motor.
2. Slaken the three fastening screws and remove the starter motor.

20 ÷ 25 Nm
2.0 ÷ 2.6 kgm