DSL 203 Drivetrains 2 Pretest

In most drive axles, lubrication is effected by the movement of the __________.

• Wheel end

• Crown wheel

• Inner wheel

• Wheel hub

The removable carrier-type drive axle housing is known as __________ housing.

• Integral

• Harper

• Banjo

• Splicer

__________ gearing is the form of bevel gearing that is developed to increase the strength of normal spiral bevel gear.

• Generoid

• Topoid

• Amboid

• Hypoid

The drive axle contains the __________.

• Quick-release valve

• Mechanism to engage the shift fork

• Piston

• Differential gears

Technician A says that axle shift control is done by an electric motor acting on a worm gear set. Technician B says that the shift control is activated by the use of air pressure. Who is correct?

• Technician A

• Technician B

• Both Tech A & B

• Neither Tech A & B

Technician A says that spinning one wheel of the vehicle wildly in slippery conditions would result in failure of differential gears. Technician B says it is okay to wildly spin the wheel when it is stuck as it doesn’t lead to any damage of differential gears. Who is correct?

• Technician A

• Technician B

• Both Techs

• Neither Tech

Technician A says the generoid gear set uses a centered tooth contact pattern. Technician B says the generoid gear set is used to increase strength. Who is correct?

• Technician A

• Technician B

• Both Techs

• Neither Tech

Which of the following is NOT a feature of locking differentials?

• One axle shaft has a second spline after the spline that engages the side gear.

• Mounted on the spline is a sliding clutch or collar.

• The sliding clutch or collar has clutching teeth on the side that faces the differential case.

• The differential case has clutching teeth that do not match those on the sliding clutch or collar.

What type of gear set is the most popular design in use today on heavy trucks?

• Amboid

• Hypoid

• Topoid

• Durapoid

The __________ gears improved upon __________ gear sets as much as __________ gears improved upon __________ gears.

• Bevel, spiral, spur, helical

• Spiral, bevel, helical, spur

• Spiral, helical, spur, bevel

• Helical, bevel, spur, spiral