Glow plugs

GLOW PLUGS

These are of the rapid incandescence bulb type and they reach a temperature of 850°C in the nominal time of ~ 7 seconds.

They have a resistance coil in "Alferon" with high resistivity and "Nickel" with low resistivity welded by laser. The outer bulb is in "Inconel 601" with a thickness of 0.7 mm.

1. Threaded terminal
2. Spacer
3. Insulant
4. Body
5. Filament protection

1. Pinion
2. Roller free wheel
3. Coupling lever
4. Energizing coil
5. Relay
6. Rotor
7. Flywheel ring gear

A relay energized by the motor current engages the pinion through a fork. The starter motor installed is of the translating screw pinion type with relay housed directly above the motor.

REMOVAL/REFITTING

• Disconnect the battery (-) terminal.

1. Slacken the fastening nuts and remove the bar and the glow plug supply cable.
2. Remove the glow plugs.

STARTER MOTOR

Overcoming the inertia and frictions, the starter motor cranks the engine to a set number of revolutions in order to begin the formation of the mixture necessary for combustion and subsequent autonomous movement of the engine.

The motion is transmitted by a direct current electric motor, powered by the battery current, through a coupling pinion that turns the ring gear on the flywheel.

Due to a freewheel coupling, the pinion disengages when the main engine unit turns faster than the motor.

REMOVAL/REFITTING

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

1. Disconnect the radiator return pipe from the oil filter support.
2. Disconnect the starter motor electrical connections.

Slacken the three screws fastening the starter motor to the gearbox and remove it.

• For Dis-assembly/Re-assembly Checks and Inspections, proceed as described for the Boxer engines.