Worksheets12-21-2023 All wheel drive
Total questions: 60
Worksheet time: 30mins
What is the purpose of the slip yoke on the driveshaft?
It allows for up-and-down movement of the suspension
It enables the driveshaft to accommodate worn u-joints
It allows for a change of driveshaft angle during turns
It enables the differential to work at different angles
All of these are drivetrain components EXCEPT?
Driveshafts
Balance Shafts
Final Drives
Drive Axles
All front-engine front-wheel drive vehicles use a traverse -mounted engine coupled to a transaxle
True
False
In a transverse front-wheel drive layout application, the transaxle is normally mounted at the ___________ of the engine and a primary shaft engages with the splines of the clutch center plate.
Front
Rear
Center
Side
Vehicles with independent rear suspension have:
Live rear axles
Leaf springs
Driveshafts in axle housings
Driveshafts with flexible joints on both ends
In vehicles with an independent rear suspension, the final drive unit is mounted on the chassis frame, and drive is transferred to each road wheel through external driveshafts (half-shafts), which have flexible joints on each end.
True
False
Choose the correct statement:
Select one:
Most front-engine front-wheel drive vehicles use a longitudinal-mounted engine.
Front-wheel drive power reaches the rear wheels through the transaxle.
.
In a transverse-mounted engine, the front of the engine is facing the front of the vehicle.
Power is transmitted in a straight line from the engine through the transaxle and out to the front axles.
All of these apply to vehicles with live solid rear axles EXCEPT:
the struts absorb road shocks and bumps.
there's a continuous change of distance between the output shaft and final drive pinion.
the drive shaft angle changes relative to its connections.
the final drive pinion nose angle changes when accelerating or braking.
With a(n) _____, drive from the engine is transmitted to a rear axle assembly by a drive (propeller) shaft.
Solid rear drive layout
All-wheel drive layout
Front-wheel drive layout
Rear-wheel drive layout
In a conventional rear-wheel drive vehicle, the engine and transmission are mounted:
longitudinally at the front.
transversely at the front.
longitudinally at the rear.
transversely at the rear.
A transfer case is most often used in a(n):
front-wheel drive (FWD) vehicle
four-wheel drive (4WD) vehicle
rear-wheel drive (RWD) vehicle
vehicle with a dead axle.
Newer designs in 4WD pickup trucks and SUVs use constant velocity (CV) joint type front axles.
True
False
In a 4-wheel drive vehicle, final drives are found:
In the front of the vehicle
In the rear of the vehicle
both in the front and rear of the vehicle.
in neither the front or rear of the vehicle.
Tech A says that part time four wheel drive does not use a transfer case. Tech B says that constant-velocity joints are used on some four-wheel drive vehicles. Who is correct?
Tech A
Tech B
Both
Neither
______ transmits power to the front and rear drive axles at normal drive speed.
Four-wheel drive low range
Four-wheel drive high range
Two-wheel drive
Neutral
Technician A says that driveline binding can be caused by tires that have different circumferences. Technician B says that tires can be shaved to even out tire circumferences. Who is correct?
Tech A
Tech B
Both
Neither
In all-wheel drive vehicles only two of the wheels are normally powered, typically the rear wheels.
True
False
The transfer case is a device designed to split the power from the transmission to the ______ when four-wheel drive is selected.
Front-drive axles
Rear-drive axles
Both A and B
Neither A nor B
Technician A says that in all-wheel-drive vehicles, locked differentials are used to ensure ease in driving around curves. Technician B says that a third set of differential gears is used to allow turning and driving into curves. Who is correct?
Select one:
Technician A
Technician B
Both A and B
Neither A nor B
In some vehicles, when the transfer case's low range option is selected, a geared electric motor automatically operates an engagement sleeve splined to the _______.
Select one:
Front output shaft
Front input shaft
Back output shaft
Back input shaft
When the transfer case of an all-wheel-drive vehicle is in high range the wheels:
Select one:
are allowed to rotate at different speeds.
rotate at the same speed.
gain more traction on loose road surfaces.
are locked and cannot turn.
The TCM does not have the ability to memorize driver preferences/behaviors.
Select one:
True
False
Mechanical shifting controls can wear out over time, and electrical problems may develop due to _____.
Select one:
Corrosion
Looseness
Both A and B
Neither A nor B
Vacuum controls have rubber diaphragms in them, heat and moisture can cause them to deteriorate over time.
Select one:
True
False
Technician A says that mechanical shifting controls can wear out over time. Technician B says that vacuum control rubber diaphragms can deteriorate over time. Who is correct?
Select one:
Technician A
Technician B
Both Technician A and Technician B
Neither Technician A nor B
Wheel bearings and hubs are subject to wheel rim offsets that throw off the wheel's scrub _____ and cause premature failure of the bearings and hubs.
Select one:
Radius
Circumference
Diameter
Hypotenuse
Four-wheel drive vehicles have either automatic locking hubs or manual locking hubs.
Select one:
True
False
All of the following are used for shift controls for engaging transfer cases EXCEPT:
Select one:
mechanical.
vacuum.
hydraulic.
electrically motorized.
What part is this?
Wiper motor
Differential motor
Rzeppa motor
Transfer case motor
What is the smaller lever?
Manual transmission shift lever
Automatic transmission shift lever
Transfer case shift lever
Overdrive
A transfer case is only used in a four wheel drive vehicle but not in an all wheel drive vehicle.
True
False
On a four wheel drive vehicle that has the two wheel drive option selected, the vehicle will have _________ dead axle(s).
0
1
2
None of the above
A live axle is __________ driven.
gear
torque
hydraulically
all of the above
The component that allows the torque to split between the front and the read axles is called?
Transmission
Differential
Transfer case
U joints
How can transfer case be activated?
Manually
Electronically
Vacuum
All of the above
In a front-wheel drive the differential is located _______ the transaxle and is driven by the secondary shaft, which is connected to the pinion drive gear.
On top of
Inside of
On the bottom of
To the left of
Backlash is the amount of movement between the differential pinion gear teeth & the differential ring gear teeth.
True
False
What are the two most common types of limited slip differentials in use?
Clutch & gear
Cone & roller
Friction & antifriction
Sprag and one-way
A vehicle with ______________ will overcome the loss of traction by applying more power to the wheel that is not slipping by applying the brake on the wheel that is slipping.
A limited slip differential
Traction control
An active suspension system
An adaptive cruise control
The ___________________ assembly provides the final gear reduction necessary for drivetrain operation
Pinion gear
Ring gear
Driveshaft
Final drive
Preventive maintenance of a final drive assembly, regardless of its design, is important, as these axles are filled with special lubricants that promote long life and maintain quiet operation of the gears.
True
False
The clutch-style limited slip differential uses a multi-plate clutch pack between each side gear and the differential case.
Select one:
True
False
Technician A says that threaded rings are used to set the carrier bearing preload in some differentials. Technician B says that shims are used to adjust carrier bearing preload in some vehicles. Who is correct?
Technician A
Technician B
Both A and B
Neither A nor B
Most vehicle manufacturers today use a gear-style limited slip differential design rather than the clutch-type design.
Select one:
True
False
How many styles of limited slip differentials are mainly in use?
2
3
4
5
Technician A says that the final drive assembly can be found in the front of the vehicle or the rear of the vehicle. Technician B says that the final drive assembly will be found only in the rear of the vehicle. Who is correct?
Select one:
Technician A
Technician B
Both A and B
Neither A nor B
On all of the final drive assemblies manufactured today, the anti-lock brake system (ABS) wheel speed sensor is incorporated in them.
True
False
Technician A says that when a vehicle is going straight, the side gears rotate two times faster than the pinion gears. Technician B says that when a vehicle is going straight, the pinion and side gears are going the same speed. Who is correct?
Technician A
Technician B
Both A and B
Neither A nor B
The outside plate of a clutch style limited slip differential is _______ to provide initial tension on the clutch pack when the two halves of the carrier are assembled.
Select one:
Dished
Cup shaped
Both A and B
Neither A nor B
Final drives can be found in _______.
Select one:
Axles at the rear of the vehicle
Axles at the front of the vehicle
The transaxle of a front-wheel drive vehicle
All of the above
In a rear-drive vehicle, the ring gear is bolted to:
Select one:
the pinion bearing.
the differential carrier.
rear frame.
the leaf spring shackles.
In all axle designs, threaded adjusting rings engage with threads in the housing and will push against the side bearings of the carrier.
Select one:
True
False
Technician A says that the differential assembly allows the tires to travel at different speeds when going around a corner. Technician B says that without the differential, the tires might skip and slide when the vehicle goes around a corner. Who is correct?
Select one:
Technician A
Technician B
Both A and B
Neither A nor B
The most technically accurate description of a differential is that a differential:
Select one:
forces the two axles to turn at the same speed.
allows the axles to turn at different speeds.
is there to provide a place to connect the driveshaft.
is driven by the rear wheels.
The gear(s) that directly drive the drive axles is/are:
Select one:
the side gears.
the pinion gears.
the ring gear.
the drive pinion gear.
Some axle designs, shims are used to push against the side bearings to adjust _______.
Select one:
Bearing preload
Backlash
Both A and B
Neither A nor B
Backlash clearance is the amount of clearance between:
Select one:
the ring gear and the side gears.
the pinion gear and the differential case.
the side gears and the pinion gears.
the ring gear and the pinion gear.
Name this part?
Pinion Gear
Ring Gear
Rzeppa Joint
Flywheel
What is this?
Ring Gear
Pinion Gear
Rzeppa Joint
Input Shaft
What part is this?
Rzeppa Joint
CV Joint
Universal Joint
Double Cardan Joint
