Final Drive Assemblies

This type of differential gear has the pinion gear mounted below the centerline of the crown gear:

• Hypoid

• Typhoid

• Amboid

• Plopoid

• Clopoid

Differential Gears do not allow for the wheels to turn at different speeds.

• True

• False

Differential pinion gears can be damaged by all of the following EXCEPT:

• Mismatched tire sizes

• Engine Misfires

• Abusive Driving

• Wheel Spinning

Vehicle vibrations may result from all of the following EXCEPT:

• A bent axle

• A bent driveshaft

• Excessive clearance between gears

• A bent tire and rim combination

Seals can develop leaks, which can cause bearings to _________.

• Become dry

• Overheat from a lack of lubrication

• Become damaged

• All of the above

Lack of lubrication will not usually result in failure of all the differential bearings, requiring a complete overhaul if the low fluid concern is not promptly addressed.

• True

• False

The ___________ is held on by a large nut that also sets the preload for the pinion gear on crush sleeve types.

• Ring gear

• Half-shaft component

• Pinion companion flange

• Axle bearing

Technician A says that when disassembling a differential case, it's good practice to first measure ring gear runout. Technician B says that when overhauling a differential, it's good practice to save the crush sleeve for reuse. Who is correct?

• Tech A

• Tech B

• Both

• Neither

The differential ring gear rotates and drives the differential pinion.

• True

• False

The forces on the pinion gear are tremendous in that the driveshaft, which is connected to it, transmits the power to all of the following EXCEPT:

• Pinion gear

• Ring gear

• Axles and tires

• Transfer case assembly