Exam 7: Differentials and Drive Axles

What is meant by the term axle ratio?

Lapping is the process of using a grinding paste to produce a fine finish on the teeth of the two gears that will be in full contact with each other

Technician A says the hypoid gearset was designed to lower the body profile. Technician B says hypoid gears provide for smoother and quieter action. Who is correct?

How is the final drive ratio determined?

Based on the information provided in the differential figure below, does the action indicate the vehicle is turning a corner or moving straight?

The _____ is the final set of reduction gears the engine's power passes through on its way to the drive wheels.

Some limited-slip differentials are gear-based (no internal clutches) units that transfer torque from a slipping wheel to the wheel with more traction.

What is the metal unit encasing the differential side gears and pinion gears to which the ring gear is attached?

To replace a ring and pinion gearset with one of the correct ratio, the ratio of the original set must be known.

What part is used to prevent the lubricant from leaking out of the housing of a straight roller axle bearing?

Technician A says, upon heavy acceleration, the pinion attempts to climb up the ring gear due to an "equal and opposite" reaction. Technician B says this action attempts to raise the front of the differential housing. Who is correct?

What is the difference between a live axle and a dead axle?

What are some factors considered when a manufacturer selects a final drive ratio for a vehicle?

A _____ gearset is one in which any one pinion tooth comes into contact with only some of the ring gear teeth, but more that one revolution of the ring gear is required to achieve all possible gear tooth contact combinations.

Where is the final drive located in RWD and FWD cars?

The overhung-mounted pinion has three bearings supporting the pinion.

What is a differential?

Backlash is the clearance or play between two gears in a mesh.

_____ is a suspension alignment term used to define the amount of centerline of a wheel is tilted inward or outward from the true vertical plane of the wheel.

What is bolted to the axle and contains all of the information needed to identify the axle for diagnosis and service?