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WorksheetsDrivetrains week3
Total questions: 20
Worksheet time: 10mins
Which statement best describes a dead axle in a vehicle?
Controls steering angles under front suspension loads
Supports engine output through differential gears
Provides no drive capabilities; wheels spin freely
Transfers torque to the wheels to move vehicle
Which axle type supports the vehicle’s weight directly on the axle shaft and risks the wheel coming off if the shaft breaks?
Three-quarter floating axle using single bearing
Semi-floating axle with splined side gears
Independent suspension axle with CV joints
Full-floating axle with opposing bearings
Which statement best describes full-floating axles concerning load support?
Hub bearings carry vehicle weight, not the axle
Axle shaft and hub both share the weight
Axle shaft alone supports all vehicle weight
Weight carried by a single outer roller bearing
For medium- to heavy-duty applications, which combination of components manages sideways thrust and increases load capacity?
Two opposing tapered roller bearings
Single roller bearing with hub support
Splined axle to differential side gears
Axle flange bolted and sealed with RTV
Which area is most commonly checked first when diagnosing axle fluid leaks in aging vehicles?
Axle seals at the tube ends
Differential carrier bolts
Wheel speed sensor harness
Spring perch weld locations
During inspection, you find an overheated axle bearing. What underlying issue best explains both the heat and seal damage observed?
Bent axle reducing fluid level
Lack of lubrication causing friction
Hardened seals trapping heat
Overfilled final drive cooling parts
In a front-wheel-drive vehicle, what is the primary function of the half shafts shown?
Support vehicle weight across the front suspension
Provide hydraulic assist for steering effort
Control braking force distribution between wheels
Transfer torque from transaxle to front wheels
What method can be used to release the inner end of the half shaft from the transaxle?
Strike the shaft with sledge
Puller on wheel studs
Slide hammer or pry bar
Heat the joint with a torch
After replacing a half shaft, what service consideration may be necessary regarding vehicle geometry?
Check wheel alignment if disturbed
Reprogram transmission shift points
Reset tire pressure monitoring sensors
Bleed engine cooling system thoroughly
Which symptom best differentiates CV joint noise from brake squeal?
Grinding only while stopping straight
Clicking when turning versus braking
Noise only at highway speeds
Humming proportional to road speed
In areas with high labor rates, why might inspecting and servicing a boot cost more than replacing the half shaft?
Half shafts require special programming
Boot parts are prohibitively expensive
Boot work voids any part warranties
Inspection and boot replacement take longer
When the half shaft outer end is free, what should happen at the hub?
It should remain fixed in the hub
It should come apart from the hub
It should lock to prevent movement
It should rotate with the caliper
What is a key action before replacing a half shaft?
Order the most expensive axle
Inspect related components thoroughly
Lubricate wheel studs only
Skip diagnostics to save time
A customer complains about clicking while turning. Before ordering a half shaft, what should you do?
Test radio for interference noises
Replace axle immediately to be safe
Inspect boots, joints, and related parts
Add tire shine and road test
What is the main advantage of a full-floating axle in heavy-duty vehicles?
It allows the axle shaft to be removed without removing the wheel
It reduces the need for differential gears
It increases engine power output
It eliminates the use of bearings entirely
What is the primary function of a constant velocity (CV) joint in a front-wheel-drive vehicle?
Transmit torque while allowing steering and suspension movement
Reduce engine vibration at idle
Control brake pressure to the wheels
Support vehicle weight directly on the axle shaft
Which condition is most likely to cause premature wear of axle seals?
Routine wheel alignment checks
Excessive lubrication in the axle housing
Contaminants entering through damaged boots
Proper installation of tapered roller bearings
When diagnosing a humming noise that increases with road speed, which axle component should be inspected first?
CV joint boots for tears
Axle bearings for wear
Brake pads for glazing
Wheel studs for corrosion
What is the primary function of the axle housing in a solid rear axle assembly?
Regulate brake fluid pressure
Control steering geometry
Support the differential and axle shafts
Transmit engine torque to the wheels
Which type of axle is most commonly found in vehicles with independent rear suspension?
Semi-floating axle
Drive shaft axle
Full-floating axle
Dead axle
