Drive Axle Assemblies Flashcards
Differential action is normally relatively
A) slow
B) fast
C) modulated
D) controlled
A) slow
Which of the following are types of rear axle housings?
A) rigid one piece and removable carrier
B) removable carrier and integral carrier
C) flexi-cast and integral carrier
D) rack and slot carrier
B) removable carrier and integral carrier
Which of the following describes a drive side in a typical ring gear tooth and tooth pattern?
A) convex side of gear tooth
B) upper part of ring gear tooth above pitch line
C) lower part of ring gear tooth below pitch line
D) outer end of ring gear tooth
E) concave side of gear tooth
F) imaginary line separating face and flank of tooth
G) inner end of ring gear tooth
A) convex side of gear tooth
In the SAE classification for oils, a smaller number indicates
A) oil that will flow easier
B) oil that is thicker
C) the color
D) the break down temperature
A) oil that will flow easier
What type of roller bearings are normally used in most final drive bearing applications?
A) ball bearing
B) taper bearing
C) straight bearing
D) radial bearing
B) taper bearing
Referring to contact patterns with gear sets, to correct an out pattern the pinion must be moved
A) in
B) out
A) in
Internal surfaces of the differential case are machined to mate with the
A) pinion gears
B) thrust washer
C) side bearing
D) shim
A) pinion gears
When checking the gear tooth backlash on a differential generally ____ mm is acceptable.
A) 25.5
B) 12.5
C) 0.80
D) 0.25
D) 0.25
Chatter occurring on turns may indicate
A) worn clutch cone or springs
B) worn suspension bushings
C) pinion bearing trouble
D) ring and pinion gear faults
A) worn clutch cone or springs
In final drive assembly diagnosis what is the cause of brinelling in bearings?
A) lack of lubrication and overheating
B) foreign material
C) impact or shock load
D) fatigue wear
C) impact or shock load
When semi floating axles using ______ bearings are removed the bearings remain in the axle housing.
A) ball
B) taper roller
C) straight
D) radial
B) taper roller
During final drive assembly and service it is a common practice to the pinion nut to obtain a correct preload.
A) True
B) False
B) False
Which of the following describes a coast side in a typical ring gear tooth and tooth pattern?
A) convex side of gear tooth
B) upper part of ring gear tooth above pitch line
C) lower part of ring gear tooth below pitch line
D) outer end of ring gear tooth
E) concave side of gear tooth
F) imaginary line separating face and flank of tooth
G) inner end of ring gear tooth
E) concave side of gear tooth
Semi floating axles transmit ____ thrust to the axle housing.
A) front
B) side
C) angular
B) side
Groan occurring in forward or reverse gears may indicate
A) worn clutch cone or springs
B) worn suspension bushings
C) pinion bearing trouble
D) ring and pinion gear trouble
B) worn suspension bushings
Differential action only occurs when there is ______ between two driving wheels.
A) speed difference
B) braking occurring
C) loss of traction
D) transfer
A) speed difference
The drive pinion gear is much ______ than the ring gear.
A) smaller
B) larger
A) smaller
What are axle shafts made of?
A) extruded steel
B) cold forged steel
C) composite cast fibers
D) cast iron
A) extruded steel
Which of the following best describes a cone clutch differential?
A) has almost no discernable drag on the differential until the locking feature activates
B) designed to transfer additional torque progressively as wheel occurs
C) uses multiple plates with perforated geometric patterns
D) the gear and grooved surfaces are different components
B) designed to transfer additional torque
Traditionally front axle differentials did not incorporate traction enhancement due to
A) high cost of manufacturing
B) braking considerations
C) dangerous torque steer tendencies
D) stress cracks within the differential
C) dangerous torque steer tendencies
Which of the following axle bearing types would require a C-lock at the inner end of the axle shaft?
A) ball
B) tapered roller
C) straight roller
D) spherical roller
C) straight roller
Which of these semi-floating axle bearings has the side thrust of the axles taken by the differential side bearings?
A) ball
B) tapered roller
C) straight roller
D) both a) and b)
C) straight roller
When pressing a bearing and its retainer ring onto an axle shaft, they should be installed:
A) together, bearing first.
B) separately, retainer first
C) together, retainer first
D) separately, bearing first
D) separately, bearing first
The most common type of axle housing assembly is the:
A) semi-rigid full floating type.
B) semi-floating integral carrier.
C) rigid ball bearing type.
D) semi-floating semi-rigid type.
B) semi-floating integral carrier.
Which of the semi-floating axle bearings may allow the shaft to move inward?
A) ball
B) tapered roller
C) straight roller
D) both b) and c)
D) both b) and c)
A scatter shield should be used in combination with a puller when:
A) removing or installing a bearing.
B) removing a bearing retaining ring.
C) removing or installing a bearing seal.
D) installing a bearing retaining ring.
A) removing or installing a bearing
The side thrust of both axles is taken by one axle bearing of a semi-floating axle using which type of bearing?
A) ball
B) tapered roller
C) straight roller
D) both a) and b)
B) tapered roller
A full floating axle shaft must perform which function(s)?
A) transfer drive torque
B) transfer braking forces
C) transmit side thrust
D) all of the above.
A) transfer drive torque
To service an axle with C-locks in an integral carrier type axle housing, you must first:
A) remove the carrier
B) remove the front cover
C) remove the drive pinion
D) remove the rear cover.
D) remove the rear cover.
A semi-floating axle shaft is:
A) supported by a gear at one end and bolted to a hub at the opposite end.
B) supported by gears at both ends.
C) supported by a gear at one end and a bearing at the opposite end.
D) supported by bearings at both ends.
C) supported by a gear at one end and a bearing at the opposite end
When pressing a retaining ring onto an axle shaft, you should never heat the ring because it:
A) may lose its tension and not hold the bearing.
B) will take more force to push the ring into position.
C) may damage the bearing and/or the wheel seal as it is being install.
D) will produce a gap between the bearing and the ring when the ring cools.
D) will produce a gap between the bearing and the ring when the ring cools.
Failure to ensure that the final drive breather vent is unrestricted may cause:
A) ballooning of the final drive assembly.
B) fluid leaks from any of the housing seals.
C) a rise in the fluid level of the final drive.
D) overheating of the final drive assembly.
B) fluid leaks from any of the housing seals
Axle shafts with worn it twisted splines:
A) should be switched from one side of the vehicle to the other.
B) should only be replaced with new axle shafts.
C) should be replaced with used axle shafts, when available.
D) may be repaired and placed back into service.
B) should only be replaced with new axle shafts.
Full floating axle shaft bearings are normally set up with:
A) a small amount of preload.
B) no end play and no preload.
C) a small amount of end play.
D) a large amount of preload.
C) a small amount of end play. (0.008” - 0.012”)
When a rear wheel drive vehicle with a standard differential is turning a corner, the differential:
A) drives both rear wheels a the same speed.
B) locks the axles together for better traction.
C) allows the rear wheels to turn at different speeds.
D) drives the inside wheel faster than the outside wheel.
C) allows the rear wheels to turn at different speeds.
The torque delivered through a standard differential is split;
A) variably, depending upon whether the vehicle is going straight or turning a corner.
B) evenly between the wheels under all driving conditions.
C) unevenly when one wheel is on a slippery surface (ice).
D) evenly between the wheels only when both wheels have the same traction.
B) evenly between the wheels under all driving conditions.
