Exam 18: Starting and Motor Systems

The teeth on a starter drive are worn excessively. Technician A says to replace the starter drive. Technician B says to check the flywheel. Who is correct?

The gear ratio between the starter pinion gear and flywheel teeth provides an increase in torque and a reduction in speed (rpm).

A battery should be checked and charged as needed before performing any starting systems tests.

Technician A says the starter circuit carries high current from the battery to the starter motor. Technician B says the control circuit is a low current circuit that sends current from the ignition switch to the starter relay or solenoid. Who is correct?

Which of the following is NOT a part of the starter control circuit?

A starter motor can have as many as ____________________ brushes.

Pinion gear to flywheel ring gear clearance is being discussed. Technician A says if there is too much clearance, there will be a high-pitched noise after the engine starts. Technician B says if there is too little clearance, there will be a high-pitched noise while the starter is cranking the engine. Who is correct?

If the flywheel ring gear teeth are worn, the ring gear should be ____________________.

The armature has two main components: the armature ____________________ and the commutator.

Identify five tests used to troubleshoot the starting system.

The starter motor ____________________ clutch should rotate smoothly in one direction and lock in the other.

Permanent magnet starting motors use strong magnets surrounded by field coils to produce extra turning torque.

A cranking current test is performed, and the amperage is found to be less than specification. Technician A says the starter is bad and it should be replaced. Technician B insists on testing the resistance of the cables, grounds, and connections. Who is correct?

Checking for excessive resistance in the starting circuit is being discussed. Technician A says connecting a voltmeter across the ground cable from the battery to the ground connection of the cable is the preferred method. Technician B says connecting an ohmmeter across the positive battery cable after it has been removed from the vehicle is the preferred method. Who is correct?

Technician A checks a starter's field coils for opens by connecting an ohmmeter between the coil's power feed wire and the field coil brush lead. Technician B checks a starter's field coil for a short to ground by connecting an ohmmeter from the field coil brush lead and the starter housing. Who is correct?

Which of the following could result in a hard starting condition?

The starter safety switch on a vehicle with an automatic transmission is typically located on the transmission housing.

A(n)____________________ is an electromagnetic device that uses the movement of a plunger to exert a pulling or holding force.

With a starter removed from the vehicle, how is the overrunning clutch inspected?

What is the first step in removing a starter from a vehicle?