Starter Motor
WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, 2005 Ford E450 Super Duty, and 2005 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
The starter motor:
- is a wound field, gear reduction, 12 VDC motor.
- has an integral starter solenoid.
- has an overrunning clutch in the starter drive.
The starter motor functions as follows:
- When the key cylinder turns to the START position, current flows through the solenoid pull-in and hold-in coils until the solenoid plunger is at the end of its travel. The plunger pulls the lever, which pushes the pinion to engage the flywheel.
- The contact bridges the solenoid terminals that bypass the pull-in coil. This allows the hold-in coil to keep the starter drive engaged and to pass battery current to the starter motor. The starter motor cranks the engine fast enough to start it.
- As the key returns to the RUN position, the relay cuts off current to the solenoid, and the solenoid disengages the pinion from the flywheel.