Power Trains Ch. 53

___ adjustment sets the running positions of the pinion hear in relation to the crown gear and effects the hear set contact pattern. A. Pinion depth B. Pinion backlash C. Pinion radial free play

A. Pinion depth

___ is the position that the pinion hear is mounted in relation to the crown gear. A. Pinion depth B. Pinion bearing preload C. Pinion bearing backlash

A. Pinion depth

The ___ has 2 differential gear sets, the inter-axle differential and the main differential. A. Power divider B. Differential carrier C. Output shaft

A. Power divider

Scuffing, deformation, or discoloration can be signs of excessive ___ in the axel usually caused by lubrication issues- either low or wrong type. A. Wear B. Heat C. Torsion

B. Heat

___ is negative end play A. Pinion depth B. Pinion bearing preload C. Pinion gear backlash

B. Pinion bearing preload

The thrust block normally does not contact the crown wheel during operation. Instead is runs with approximately 0.010" to 0.020" ____ clearance. A. Radial B. Running C. Moving

B. Running

___ occurs when a component is momentarily overloaded to a level that surpasses the base strength of the material causing it to fail immediately. A ___ failure results in a broken component. A. Fatigue failure B. Shock load failure C. Abuse failure

B. Shock load failure

___ support the differential case, which in turn supports the crown gear. ___ ensures that the crown gear is held ridigly and that it does not move away from the pinion gear under load. A. Pinion depth B. Side bearing preload C. Pinion backlash

B. Side bearing preload

The pinion is supported by 2 opposing tapered roller bearings and usually by a small ___ bearing (also called a pinion pilot bearing) that supports the pinion at the inside end. A. Straddle B. Spigot C. Overhung

B. Spigot

Reassembling the drive axle components begins with installing the ____.

Pinion bearings

Common leak points on a drive axle occur at teh flange gasket or in the ___ where the differential carrier is bolted to the axle housing, the pinion seal, the wheel end hub seals and the unit atmospheric vent.

Sealant

When inspecting drive axle components look for ____ or grooving caused by wear. Look for any pitting or cracks on gear contract areas

Steps

True/False Of the contact pattern runs off the tooth face at any point, the gear set will make noise

True

True/False Proper gear tooth nomenclature is essential to check and correct the contact pattern.

True

True/False Too little side bearing preload allows the crown gear to move, and too much preload causes the side bearings to fail.

True

A ___ noise will be heard on acceleration and deceleration, depending on where the pattern runs off the the tooth.

Whining