Exam 40: Drive Axles and Differentials

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 a numerically low gear ratio (such as 2.83)allow for fast acceleration and good pulling power. Who is correct?

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?

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?

Technician A says a fixed-style CV joint may be called a Rzeppa joint. Technician B says a plunging-style CV joint may be called a Rzeppa joint. Who is correct?

Technician A says when the left-side axle shaft on an FWD vehicle is longer than the right side, torque steer is reduced. Technician B says the torsional damper on the axle shaft automatically balances the shaft. Who is correct?

Fixed-style CV joints are typically located nearest the transaxle.

Which type of bearing is NOT used on semifloating axles?

With electronic torque vectoring, during cornering, torque is sent to the outer rear wheel to reduce understeer.

Technician A says a double-offset plunging-style CV joint uses a cylindrical outer housing with straight grooves. Technician B says a double-offset plunging-style CV joint is a compact design. Who is correct?

Driveshafts are made of ______.

A popping or clicking noise when turning indicates a possible worn ______ CV joint.

CV joints provide ______.

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?

What is the function of the ring and pinion gears in the rear axle of an RWD vehicle?

A three-quarter floating axle is the most common type in use today.

When the yokes are in the same plane, the joints are said to be ______.

In a two-piece driveshaft, when the yokes are in the same plane, the joints are said to be in phase.

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

A shudder or vibration that occurs only when accelerating is most likely caused by ______.

What is torque steer?