Features of the starter design (Focus 2)

The starter of Ford Focus II cars is a four-pole, four-brush DC electric motor with excitation from permanent magnets, combined with a planetary gearbox and an electromagnetic two-winding traction relay. The covers and the stator housing are tightened with two bolts. Permanent magnets are fixed in the stator housing. Rotation from the armature shaft of the electric motor is transmitted to the drive shaft through a planetary gearbox. A roller freewheel clutch is installed on the drive shaft.

When the ignition switch (lock) key is turned to position "III", voltage from the battery is supplied to the pull-in and holding windings of the traction relay, as a result of which the drive lever moves and the starter pinion engages with the toothed ring of the engine flywheel. At the same time, the anchor of the traction relay closes the power contacts (at this moment the pull-in winding is switched off), and voltage from the battery is supplied to the starter electric motor. The starter anchor rotates the engine crankshaft through the planetary gear. After starting the engine, when the rotation speed of the pinion exceeds the rotation speed of the starter shaft, the freewheel clutch is unlocked and slips, thereby protecting the starter from high rotation speed and damage.

USEFUL TIP: To avoid many starter malfunctions, follow a number of simple rules when operating it.

USEFUL TIP: When starting the engine, turn on the starter for no more than 10-15 seconds and again after 20-30 seconds. Continuous long-term operation of the starter can lead to overheating. If the engine does not start after three attempts, check and eliminate faults in the fuel system or ignition of the engine.

HELPFUL TIP: After starting the engine, immediately turn off the starter, as prolonged rotation of the flywheel drive pinion may cause the starter overrunning clutch to jam.