Exam 44: Four- and All-Wheel Drive

Identify the main internal components in a conventional transfer case.

Technician A says the viscous clutch is filled with silicone fluid. Technician B says the viscous clutch solenoid is controlled by inputs from the wheel speed sensors. Who is correct?

Two technicians are discussing transfer case shifting mechanisms. Technician A says the transfer case range is controlled by a shifter lever and mechanical linkage. Technician B says the transfer case range is controlled electrically by a switch on the dash and an electric motor on the case. Who is correct?

Two technicians are discussing tires. Technician A says narrow tires tend to cut through snow and water rather than hydroplane. Technician B says 4WD and AWD systems allow the use of tires narrower than those used on 2WD vehicles. Who is correct?

What is the purpose of the interaxle differential?

The ____________________ allows the front and rear axles to turn at slightly different speeds when the vehicle is in 4WD mode.

____________________ are checked by grasping each front tire at the front and rear and pushing the wheel inward and outward.

All-wheel drive vehicles may use a viscous clutch, rather than a transfer case, to drive the axle.

What will happen if the manual locking hubs remain in the 4WD or locked position when the vehicle is driven in 2WD mode?