Diffs

Technician A says side bearing preload limits the amount of lateral movement to the differential case in the axle housing. Technician B says adjusting backlash sets the pinion gear depth. Who is correct?

A only

Technician A says a hunting gearset is one in which one drive pinion gear tooth contacts only certain ring gear teeth. Technician B says a partial nonhunting gearset is one in which one pinion tooth contacts only six ring gear teeth. Who is correct?

B only

Technician A uses an impact wrench to tighten axle hub nuts. Technician B stakes the axle hub nuts after they are tightened to lock them in place. Who is correct?

B only

Technician A uses an oxyacetylene torch to remove the axle bearing retaining ring. Technician B uses a steel cold chisel and hammer. Who is correct?

B only

In a differential gearset, the side gears deliver torque to the pinion gears.

False

In a hypoid gearset, the drive pinion meshes with the ring gear at gear centerline.

False

The final drive gears in the drive axle assembly are sized to provide a gear speed increase and torque reduction.

False

C-shaped washers [C-locks] are used to retain the axle shaft used with _____ bearings.

straight roller

A _____-type limited slip differential uses a set of helical gears to transfer torque from the wheel that is slipping to the wheel with traction.

Torsen

Limited-slip axles require a special friction modifier fluid, added to the gear oil.

True

The differential pinion gears do not rotate on the pinion shaft when both driving wheels are turning at the same speed.

True

If a noise is heard while driving straight ahead but it ceases on turns in the same direction, what is the most likely cause?

a bad wheel bearing

Differential gearsets are being discussed. Technician A says the inside bore of the side gears is splined and mates with splines on the ends of the axles. Technician B says the differential pinion gears and side gears are in constant mesh. Who is correct?

both A and B

Ring and pinion gearset contact patterns are being discussed. Technician A says a gear tooth pattern can identify a backlash problem. Technician B says a gear tooth pattern can identify a problem with the pinion depth. Who is correct?

both A and B

Technician A says limited slip differential clutch packs are designed to slip slightly when the vehicle is turning. Technician B says pressure is kept on the clutch packs by either an S-shaped spring or coil springs. Who is correct?

both A and B

Technician A says the differential allows torque to be transmitted to the driving axles at different speeds when the vehicle is turning a corner. Technician B says the gear ratio of the drive axle's ring and pinion gears provide a gear reduction and torque multiplication. Who is correct ?

both A and B

Which type of bearing is NOT used on semifloating axles?

needle bearing

Technician A says axles with a numerically high gear ratio such as 4.11 allow the engine to run slower at any given speed, resulting in better fuel conservation. Technician B says axles with numerically low gear ratio such as 2.83 allow for fast acceleration and good pulling power. Who is correct?

neither A nor B

A ring and pinion gearset that has ten teeth on the pinion gear and thirty teeth on the ring gear is a ______.

nonhunting gearset

A collapsible pinion spacer is used to set the ______.

pinion bearing preload

Full floating axle shafts are found on ______.

rear axle of a heavy duty truck

Which type of drive axle supports the weight of the vehicle?

semifloating

Pinion gear depth is adjusted by ______.

shims placed between the pinion bearing and pinion gear

When the vehicle is turning left, ______.

the left-side gear and axle shaft are turning slower than the housing [carrier] the right-side gear and axle shaft are turning faster than the housing [carrier] the differential pinion gears rotate on the pinion shaft

Which of the following is NOT a function of the final drive in a rear axle?

transfers braking torque to the front wheels