Final Power Train Pt. 1
Auxiliary sections are used to multiply the number of available ___________ from a transmission. A) shifts B) ratios C) speeds D) power flows
B
A rough idling engine can cause gear ____________ at idle. A) rattle B) growling C) whining D) knocking
A
As the gears continue to run together, frosting is usually replaced by a shiny smooth surface in a process known as __________ A) healing B) pitting C) distortion D) clashing
A
Center bearings are typically permanently ______________ A) lubricated B) retained with snap rings or clips C) restricted by the angle of operation D) connected together
A
Clutch capacity is affected by three factors: coefficient of friction of the materials used in the clutch's manufacture, surface area, and ______ A) clamp load B) friction dampening C) resonant frequency D) resonance
A
Differential locks should in no circumstances be used when driving on __________ A) dry pavement B) slippery pavement C) urban highways D) rural roads
A
Eaton Solo, SACH's Twin XTend, and Meritor AutoJust self-adjusting clutches have replaced the large internal adjusting ring with a set of ________ A) movable cam rings B) sealed release bearings C) slip yokes D) anti-rattle springs
A
Engine _______ are caused by the acceleration of the engine crankshaft that occurs on each cylinder firing. A) torsional vibrations B) firing pulses C) shaft speeds D) rpms
A
If a pedal is hard to depress, the cause could be _______ A) release bearing wear pads grooved B) oil-soaked discs C) too much free play at pedal D) insufficient release bearing clearance
A
In pot-type flywheel designs, the intermediate plate is driven by ________ installed in the flywheel itself. A) drive pins B) pilot bearings C) stop pins D) release bearings
A
In pot-type flywheel designs, the intermediate plate is driven by _________ installed in the flywheel itself. A) drive pins B) pilot bearings C) stop pins D) release bearings
A
Most medium- to heavy-duty truck clutches are actuated by mechanical linkage systems and the actuation system starts with the _______ A) clutch pedal B) cable linkage C) slave cylinder D) clutch brake
A
Pressure on the clutch pedal lowers pressure plate clamp load and can lead to a slipping clutch. What is the operator error that causes this problem? A) Riding the clutch B) Overloading the clutch C) Starting in too high a gear D) Coasting in gear with the clutch disengaged
A
Pressurized air from the vehicle's air system is used to perform all __________ shifting. A) auxiliary section B) clash free C) down D) overdrive
A
Pressurized air from the vehicle's air system is used to perform all ____________ shifting. A) auxiliary section B) clash free C) down D) overdrive
A
Shift rails have what type of system that prevents two rails from being moved from the neutral position at once? A) Interlock B) Spring-loaded C) Sliding-collar shift D) Shift delay
A
The Eaton Fuller data mechanical (DM) clutch is ________ applied by increasing engine rpm. A) centrifugally B) electronically C) manually D) hydraulically
A
The block-type synchronizer positively blocks gear engagement until the speeds ____________ A) match B) are in constant mesh C) decrease D) increase
A
The heavier the driveshaft is, the lower its maximum ___________ can be. A) speed B) torsional excitation C) torque D) inertial excitation
A
The main disadvantage of helical gears is that they cause ___________ A) axial thrust B) radial thrust C) pitch D) torque
A
The presence of excessive __________ indicates that the driver is not shifting correctly. A) worn clutching teeth B) spline wear C) or unusual noises D) looseness and free play in housing
A
The release fork in a pull-type clutch is what shape? A) "U" shaped B) Cone-shaped C) Straight D) "Pot" shaped
A
The scientific community actually traces the universal joint back to the ___________ used by the ancient Greeks. A) gimbals B) trunnions C) sprockets D) chain drives
A
The speed at which the centrifugal force causes the shaft to move off its axis is known as _______________ A) critical speed B) velocity C) torque D) jounce
A
True ____________ joints are joints that can operate at angles but do not create the speeding up and slowing down as with Cardan joints. A) constant velocity B) Hooke C) Rzeppa D) slip
A
What eliminates the need for double clutching techniques? A) Synchronization B) Blocking action C) Multi-mesh gearing D) Auxiliary sections
A
What is another term for a transfer case? A) Dropbox B) Range gear C) Compound shift D) Roadranger valve
A
What is controlled by tooth design or by moving the gears' axis closer together or further apart? A) Backlash B) Rotation C) Torque D) Pitch
A
What is determined by the number of teeth per unit of diameter measured at the pitch circle of the gear? A) Gear's pitch B) Gear's axis of rotation C) Gear's core D) Gear's backlash
A
What is the name of the valve on the side of a Fuller transmission that controls air flow to the range shift cylinder? A) Slave air B) Range control C) Spool D) Insert
A
What type of axle shaft does not carry any of the vehicle weight on either end on the shaft? A) Full floating B) Half-shaft C) Side-shaft D) Semi-floating
A
What type of facings are rarely full-face linings? A) Ceramic B) Asbestos C) Organic D) Glass fiber
A
What type of gear arrangements are capable of very high gear reduction in a compact space? A) Worm and crown B) Pinion C) Plain Bevel D) Spiral bevel
A
What type of gear is the simplest of modern gears used in vehicles today? A) Spur B) Worm C) Helical D) Pinion
A
What type of gearing was developed for use in special applications and is typically only found in the rear-rear axle of a tandem drive? A) Amboid в) Тороid C) Generoid D) Durapoid
A
What type of lever is actuated by the clutch linkage and moves the release bearing? A) Release fork B) Second class C) Cross-shaft D) Actuation
A
What types of failures occur when a component is momentarily overloaded? A) Shock load B) Spinout C) Backing into a loading dock D) Dumping the clutch
A
When driving a vehicle, the range must be ____________ while in a gear. A) preselected B) lubricated C) regulated D) automated
A
When installing a new clutch, do not grease or oil the ________ of the transmission input shaft. A) splines B) shipping bolts C) drive pins D) pilot bearings
A
Where are tag axles located? A) Behind the drive axles B) Attached to the steering box C) Attached to the differential case D) In front of the drive or main axles
A
Which of the following allows the torque from the transmission to be split between the front and rear driving axles of a vehicle? A) Transfer case B) Air module C) Range cylinder D) Range sliding clutch
A
Which of the following are commonly replaced due to excessive spline wear from the clutch disks caused by torsional vibrations? A) Input shafts B) Rear seals C) Output shafts D) Range shift cylinders
A
Which of the following effects of braking and acceleration cause the rear suspension to wind up (acceleration) or wind down (braking)? A) Torque B) Jounce C) Rebound D) Excitation
A
Which of the following occurs when an engaged gear's sliding clutch moves out of engagement while the vehicle is pulling a load, causing the transmission to go into neutral? A) Gear slip out B) Range shift C) Vibration D) Clashing
A
Which of the following was the first fully automated standard transmission to hit the North American Market? A) Eaton AutoShift Meritor Engine Synchro Shift (ESS) C) ZF Traxon D) Meritor SureShift
A
With ___________ ratios, the output shaft will turn faster than the input shaft. A) overdrive B) underdrive C) forward D) half-step
A
With ____________ ratios, the output shaft will turn faster than the input shaft. A) overdraft B) underdrive arive C) forward D) half-step
A
_______ is the intermittent grabbing and slipping of the clutch while it is being engaged. A) Clutch chatter B) Free play C) Squeeze D) Free travel
A
_________ systems actively prevent differential action from occurring when engaged. A) Locking differential B) Biased torque C) Controlled traction D) Double reduction
A
__________ allows the speed difference between the engine and the clutch disc to vary uncontrollably. A) Coasting in gear B) Riding the clutch C) Starting in too high a gear D) Overloading the clutch
A
___________ in an inter-axle differential is detrimental because it turns at a much higher speed. A) Spinout B) Runout C) Wheel slip D) Higher torque
A
what type of lever is actuated by the clutch linkage and moves the release bearing A) Release fork B) Second class C) Cross-shaft D) Actuation
A
The simplest form of a gear is the __________ A) lever B) peg C) гoot D) spur gear
A.
What type of facings are rarely full-face linings? A) Ceramic B) Asbestos C) Organic D) Glass fiber
A.
A properly adjusted ________ clutch has a certain clearance between the tips of the release fork and the wear pads on the release bearing. A) actuated B) pull-type C) push-type D) self-adjusting
B
A steady leak from the breather of the slave air valve on the side of the transmission can be caused by what type of defective rings in the valve? A) Friction rings B) Piston O-rings C) Snap D) Synchronizer
B
All driveshafts have a natural tendency to vibrate because of a phenomenon called _______________ A) uniform velocity B) non-uniform velocity C) harmonic vibration D) critical speed vibration
B
An inter-axle differential is also called a ________ A) proportional differential B) power divider C) differential lock D) biased torque differential
B
Anti-rattle springs stop the _______ from rattling when the clutch is disengaged. A) flywheel B) intermediate plate C) pilot bearing D) friction disc
B
Bearings can wear due to ___________ A) abuse before assembly B) lube contamination C) excessive spline wear D) severe shock load
B
Clutch types are largely described by the type of ______ the clutch has. A) bearings B) cover C) flywheel D) pressure plate
B
For _________ to occur, the transmission control software must know the precise speed of the input shaft, the countershaft, the main shaft gears, and the main shaft itself. A) driver-initiated shifts B) clash-free shifts C) upshifts D) splitter
B
If a clutch is noisy on disengagement, what would a possible cause be? A) Warped clutch disc or pressure plate B) Worn or damaged release bearing C) Insufficient release bearing free travel D) Too much free play at pedal
B
If a weld cracks or a key breaks on the countershaft, a gear may shift slightly resulting in _____________ A) a rattle B) a tooth spacing error C) hard shifting D) thudding sounds
B
If airflow is restricted to the transmission due to the vehicle's configuration (aerodynamics), what may be required? A) Fluid change B) Transmission cooler C) Shimming D) Filter replacement
B
In __________ transmissions, a main shaft gear that is splined to the main shaft is slid into and out of mesh with a corresponding countershaft gear to create the ratio. A) synchronized B) sliding-gear C) sliding-clutch D) sliding-collar
B
In a pull-type clutch, the release bearing performs the same function as in a push-type clutch, which is to ________ A) prevent gear clash B) release the clutch C) lubricate the release bearing housing D) handle axial and radial thrust loads
B
In a pull-type clutch, the release bearing performs the same function as in a push-type clutch, which is to _________ A) prevent gear clash B) release the clutch C) lubricate the release bearing housing D) handle axial and radial thrust loads
B
In an engine, what is introduced to the transmission through the clutch disc or discs? A) Friction B) Torque C) Pressurized air D) Pressurized oil
B
In any clutch, the clutch cover is the component that is bolted to which of the following? A) Input shaft B) Flywheel C) Intermediate plate D) Crankshaft
B
In most drive axles, lubrication is effected by the movement of the ________ A) wheel end B) crown gear C) inner wheel D) wheel hub
B
In the FR model transmissions, which of the following holds the air filter, pressure regulator, and slave air valve? A) Shift gate B) Air module C) Shift cover D) Splitter shift cylinder
B
In their normal, relaxed position, drive straps are ______ A) disengaged B) straight C) curved D) twisted
B
Perhaps one of the most important functions of a clutch is to absorb damaging __________A) extreme-duty applications B) driveline torsional vibrations C) oscillations D) severe-duty applications
B
The ______ is related to the force required to move an object across a given surface divided by the weight of the object. A) clamp force B) coefficient of friction C) torsional vibrations D) kinetic friction
B
The _______ is related to the force required to move an object across a given surface divided by the weight of the object. A) clamp force B) coefficient of friction C) torsional vibrations D) kinetic friction
B
The ____________ of the driven gear will be reduced by the ratio. A) force B) speed C) rotation D) thrust
B
The automotive clutch consists of two or more driving components-the flywheel and the ______ A) slave cylinder B) pressure plates C) torsional springs D) pivot rings
B
The automotive clutch consists of two or more driving components—the flywheel and the _____ A) slave cylinder B) pressure plates C) torsional springs D) pivot rings
B
The average contact point of a given gear tooth is its __________ A) addendum B) pitch diameter C) top land D) tooth face
B
The dual-cut helices on herringbone gears cause all axial thrust to be ___________ A) included when calculating gear ratios B) cancelled out C) reduced with no loss of torque capacity D) moved with less force
B
The harder the clutch is squeezed between the pressure plate and the flywheel, the greater the ______ the clutch can handle. A) kinetic friction B) torque C) vibrations D) resonance
B
The transmission driver interface with a standard transmission is better known as the ________ A) shift tower B) shift lever C) main shaft D) sliding collar
B
The transmission driver interface with a standard transmission is better known as the ___________ A) shift tower B) shift lever C) main shaft D) sliding collar
B
Trailer dead axles serve as attachment points for the _________ A) suspension and frame B) brakes and suspension C) brakes and wheel differential D) inter-axle differential and suspension
B
True bevel gearing is similar to spur type gearing in that the teeth are __________ cut. A) dual B) straight C) helically D) groove
B
Usually, vibrations that occur elsewhere in the driveline are amplified in the _________ A) countershaft B) transmission C) auxiliary section D) air shift system
B
What is the twisting force generated by the engine? A) Mesh B) Torque C) Rotating D) Mechanical advantage
B
What is usually caused by excessive torque loading of the drive line? A) Galling B) Twisted tubing C) Spalling D) Shaft runout
B
What type of bleeding procedure usually requires an assistant to hold the clutch pedal down while the other person opens the bleeder valve on the slave cylinder? A) Vacuum B) Manual C) Pressure D) Gravity
B
What type of clutch is the most popular clutch type used in heavy-duty trucks, as these vehicles normally have non-synchronized transmissions? A) Self-adjusting B) Pull-type C) Push-type D) Coil-spring
B
What type of gear set is the most popular design in use today on heavy trucks? A) Amboid в) Нурoid c) Торoid D) Durapoid
B
What type of gears are today, for the most part, considered obsolete? A) Durapoid gearing B) Worm and crown gears C) Hypoid gearing D) Spiral bevel gears
B
What type of gears have opposite helices on each side of their face? A) Idler B) Herringbone C) Spiral bevel D) Spur
B
When we have a ratio with more than one pair of gears involved it is called a(n) ________ ratio. A) gear reduction B) compound C) overdrive D) underdrive
B
Which of the following carries inertia as they rotate? A) Pressure plates B) Flywheels C) Friction discs D) Spring clutches
B
Which of the following involves controlling torsional vibration by placing friction material between the spring cage plates of the clutch disc and the friction driven plate? A) Established the running clearance B) Friction dampening C) Actuating D) Pre-dampening
B
Which of the following is the amount of torque a clutch can transmit before it starts to slip? A) Resonance B) Clutch capacity C) Clamp load D) Clamp force
B
Which of the following is the connection between the drivers clutch pedal and the clutch cross shaft? A) Release bearing B) Clutch linkage C) Release fork D) Feeler gauge
B
Which of the following is the preferred method of cancellation, as the two joints will remain equal oscillation and shaft length changes? during suspension A) Coupling arrangement B) Parallel arrangement C) Broken back arrangement D) Intersecting angle arrangement
B
Which of the following refers to the fact that the auxiliary section gearing is not permanently connected to the main box gearing through the auxiliary drive gear? A) Low gear B) Low inertia C) Low range D) Low split
B
Who was the first to document that the joint produced non-uniform velocity when operated at an angle? A) The ancient Greeks B) Robert Hooke C) Clarence Spicer D) Gerolamo Cardano
B
The __________ is the area that actually comes into contact with a mating gear. A) dedendum B) tooth face C) root D) top land
B.
The harder the clutch is squeezed between the pressure plate and the flywheel, the greater the ________ the clutch can handle. A) kinetic friction B) torque C) vibrations D) resonance
B.
What is another term for clutch brake actuation? A) Free play B) Squeeze C) Alignment D) Clearance
B.
Which of the following clutches are extremely heavy and the use of a clutch jack is strongly recommended? A) Push type B) 15.5" dual disc pull-type C) 14" dual-disc pull-type D) Self-adjusting
B.
Which of the following refers to the fact that the auxiliary section gearing is not permanently connected to the main box gearing through the auxiliary drive gear? A) Low gear B) Low inertia C) Low range D) Low split
B.
A ________ is a device attached to the transmission that is gear-driven and can be used to run accessories. A) sliding collar B) synchronizer C) power take-off device D) sliding clutch
C
A __________ is a device attached to the transmission that is gear-driven and can be used to run accessories. A) sliding collar B) synchronizer C) power take-off device D) sliding clutch
C
A is a profile of the teeth in which the outer edge is thicker than the inner edge. A) spacer B) retainer C) back taper D) reluctor
C
An adjusting system that is exclusive to Eaton/Spicer angle spring clutches uses a(n) ______ device. A) locking tang B) adjusting ring C) quick-adjust D) release bearing spider
C
Any driveshaft must allow the shaft to change _______________ A) speed B) weight C) length D) direction
C
As the clutch wears, which of the following becomes thinner? A) Pressure plate B) Release bearing C) Friction disc D) Flywheel
C
Backing under a trailer is a condition usually unique to _________ drives. A) final B) tridem C) tandem D) double reduction
C
Compared to bevel gearing systems, what type of drive systems are capable of very large speed reductions with much smaller gears? A) Countershaft B) Rack-and-pinion C) Worm D) Steering
C
Every vehicle will have a steering axle, at the front, which allows the vehicle to ________ A) carry more payloads B) stop C) turn D) maximize fuel economy
C
Excess heat causes the surface of the friction materials in clutches to liquefy, so they can no longer transfer _______ A) engagement B) friction C) torque D) pressure
C
Glidecoat is a blue nylon coating designed to reduce ___________ in the slip joint. A) the magnitude of the acceleration and decelerations B) vibration C) friction D) the driveshaft weight
C
If installing a SOLO or other self-adjusting clutch, you must remove what type of bolts after the clutch is bolted to the flywheel? A) Transmission B) Bottom C) Shipping D) Attaching
C
In a clutch, which of the following supports the release fork? A) Input shaft B) Countershaft C) Cross-shaft D) Clutch linkage
C
In any driving situation, when we add the speed of the two axles together, the total will always equal _______ of case speed-no matter how much the difference in speed is. A) 50% B) 75% C) 200% D) 100%
C
Most differential locks are _________ operated and consist of a differential lock switch on the dashboard A) mechanically B) hydraulically C) air D) electronically
C
Most medium- to heavy-duty truck clutches are actuated by mechanical ______ systems. A) transmission B) auto-shift C) linkage D) hydraulic
C
Most medium- to heavy-duty truck clutches are actuated by mechanical _______ systems. A) transmission B) auto-shift C) linkage D) hydraulic
C
Most shift bar housings will have spring-loaded __________ that engage notches on the shift rails. A) bushings B) bearings C) detent balls D) interlock balls
C
Most shift bar housings will have spring-loaded ___________ that engage notches on the shift rails. A) bushings B) bearings C) detent balls D) interlock balls
C
Simple gear ratios are the relationship between one driving and one ____________ gear. A) main shaft B) input C) driven D) countershaft
C
Sliding-gear transmissions are generally obsolete and have been replaced by ____________ transmissions. A) single countershaft B) collar shift C) constant-mesh D) multiple countershaft synchronizer positively
C
Spur-type gears have a natural tendency to cause what noise? A) Growl B) Knock C) Whine D) Rattle
C
Tandem and tridem drive arrangements must allow for differences in _________ between the drive axles. A) axle positions B) rolling radius C) axle speeds D) inter-axle differential
C
The ______ plate is the friction surface of the clutch cover and squeezes the clutch disc against the flywheel. A) intermediate B) clutch C) pressure D) steel-backing
C
The _______ plate is the friction surface of the clutch cover and squeezes the clutch disc against the flywheel. A) intermediate B) clutch C) pressure D) steel-backing
C
The most common cause of _______ is an oil-soaked clutch disc caused by leaking engine oil. A) a pedal hard to depress B) gear clash on shifting C) clutch chatter D) a noisy clutch on disengagement
C
The most popular type of steer axle in trucks is the one piece _________ style. A) helical double reduction B) planetary double reduction C) I-beam D) tubular steel
C
The transmission allows us to move extremely heavy loads by using torque _________ A) load в) сарасity C) multiplication D) input
C
The transmission allows us to move extremely heavy loads by using torque __________ A) load B) сарасity C) multiplication D) input
C
Transmission oil not only lubricates a transmission's moving parts, but it may be used to _____________ the transmission. A) heat B) pressurize C) cool D) clean
C
Transmissions filled at the factory with synthetic oils can go up to how many miles before a fluid change is required? A) 750,000 miles B) 2,000,000 miles C) 500,000 miles D) 5,000 miles
C
Two-pedal automatic transmission models have no ___________ and the transmission's operation is entirely shift-by-wire. A) electric shifter assembly B) cylinder piston C) clutch pedal D) exhaust emission
C
What is a term used to describe a small driving gear? A) Hypoid gear B) Amboid gear C) Pinion gear D) Generoid gear
C
What is the apex of the gear tooth? A) Fillet radius B) Addendum C) Top land D) Root
C
What is the shaft inside the transmission, driven by the input gear? A) Input shaft B) Output shaft C) Countershaft D) Main shaft
C
What is the theoretical point where only rolling motion exists? A) Top land B) Root diameter C) Pitch circle D) Fillet radius
C
What must be removed in order to remove the clutch? A) Cross-shaft B) Cam rings C) Transmission D) Flywheel housing
C
What type of gearing was developed to increase the strength of a normal spiral bevel gear and to lower the center of gravity of the vehicle? A) Durapoid B) Amboid С) Нурoid D) Topoid
C
What type of shift occurs when two parts of the transmission are being shifted at once? A) Power B) Range C) Compound D) High split
C
What type of valve allows air to flow to both sides of the splitter cylinder piston in low split and drains the air from the rear side of the cylinder piston in high split? A) Slave air B) Spool C) Insert D) Range control
C
What types of vibrations originate from the power impulses from the engine caused by the forces on the crankshaft during each power stroke? A) Transverse vibrations B) Inertial excitation C) Torsional vibrations D) Secondary couple vibrations
C
What types of yokes are designed to be installed over the splined output shaft of the transmission, or the splined input shaft of the drive axle? A) Universal B) Tube C) End D) Flange
C
Wheel spindles are also known as _________ A) helical pinion gear B) Ackerman arms C) steering knuckles D) dual range drive axles
C
Which of following pull-type clutches is exclusive to the Eaton Corporation? A) Coil spring style B) Self-adjusting C) Angle spring style D) Diaphragm spring style
C
Which of the following allows for a thin layer of lubricant between the tooth contact surfaces and for expansion of the gears due to heat? A) Pitch B) Radial thrust C) Backlash D) Axial thrust
C
Which of the following is anything that allows us to move greater distances or weight with less effort? A) Torque B) Axial thrust C) Mechanical advantage D) Strength advantage
C
Which of the following is the friction surface of the clutch cover and squeezes the clutch disc against the flywheel? A) Reaction plunger B) Input shaft C) Pressure plate D) Slave cylinder
C
Which of the following is the original name for a universal joint? A) U-joint B) Constant velocity joint C) Cardan joint D) Slip joint
C
Which of the following manufacturers dominate the North American market for twin countershaft transmissions? A) Spicer B) Volvo/Mack C) Eaton Corporation D) Rockwell
C
Which of the following pull-type clutches is exclusive to the Eaton Corporation? A) Coil spring style B) Self-adjusting C) Angle spring style D) Diaphragm spring style
C
_________ are small wooden spacers that hold the release bearing of a pull-type clutch in the released position. A) Shipping bolts B) Guide studs C) Shipping blocks D) Slip yokes
C
What is the primary cause of clutch failure? A) Excess cold B) Incorrect clutch installation C) Excess heat D) Dust build-up
C.
A ________ is a shaft or lever used in a mechanical linkage with a pivot in the center that reverses the normal direction of motion, A) blocker B) sliding clutch C) shift rail D) bellcrank
D
A ____________ is a shaft or lever used in a mechanical linkage with a pivot in the center that reverses the normal direction of motion. A) blocker B) sliding clutch C) shift rail D) bellerank
D
A properly adjusted push-type clutch will usually have a certain amount of ________ between the clutch release levers and the release bearing. A) actuation B) squeeze C) lubrication D) free play
D
A sliding-gear transmission will use only what type of gears? A) Output B) Input C) Helical D) Spur
D
A universal joint operating at an angle of how many degrees can be expected to last 90% or more of its normal wear life? A) Twelve B) Ten C) Five D) Three
D
According to Detroit Diesel, the high design of the topoid system reduces drive line angles and __________ A) spin out B) friction C) noise D) vibration
D
All automated transmissions have a ________?mode that allows the driver complete control over shift points when required. A) pre-programmed operating B) self-diagnostic C) failure D) manual shift
D
Another way to minimize gear rattle is by installing a clutch with pre-dampening ____________ control. A) remote B) range shift C) air shift D) vibration
D
Any ratio in which the first number is less than one is known as what type of ratio? A) Compound B) Gear reduction C) Underdrive D) Overdrive
D
As with the single drive axle differential lock, the inter-axle differential lock can be engaged at any speed provided no wheels are __________ A) stationary B) mismatched C) turning D) spinning
D
Before a shift can be made, the driver must unload the drive train or _________ A) dual clutch B) gear jam C) autoshift D) break torque
D
Differential gears allow for the wheels to turn at ________ speeds. A) equal B) faster C) slower D) unequal
D
Failure to match tire sizes can lead to failure of the inter-axle differential due to excessive A) spinout B) torque C) speed D) rotation
D
Most of today's single countershaft transmissions are constant-mesh and ____________ A) non-synchronized B) regulated C) spring-loaded D) synchronized
D
Rotation is referred to as __________ when the viewed face on the gear moves to the right from the top. A) external B) counter-clockwise C) reverse D) clockwise
D
Shifting truck transmissions without using the clutch pedal except for starting from a stop is called __________ A) multiplexing B) driver-initiated shifting C) breaking torque D) gear jamming
D
Sliding clutches tend to bind when they have ________________ A) broken or loose range synchronizer pins B) fretted gear and shaft splines C) a twisted input shaft spline D) a twisted main shaft spline
D
The drive axle contains the ________ A) quick release valve B) mechanism to engage the shift fork C) piston D) differential gears
D
The engine and ___________ are rigidly bolted together and are always on the same plane when the vehicle moves along the road. A) center bearing B) frame C) suspension D) transmission
D
The input shaft is the input to the transmission driven by the ___________ A) sliding clutch B) main shaft C) countershaft D) clutch friction disc
D
The purpose of a ______ is to smooth out vibrations disc used on a manual transmission/transaxle from the crankshaft assembly and provide one of the friction surfaces for a clutch applications. A) travel damper B) drive pin C) pilot bearing D) flywheel
D
The purpose of a ________ is to smooth out vibrations from the crankshaft assembly and provide one of the friction surfaces for a clutch disc used on manual transmission/transaxle applications. A) travel damper B) drive pin C) pilot bearing D) flywheel
D
The relative resistance to motion between any two bodies in contact with one another is called ______ A) clamp force B) running clearance C) coefficient of friction D) friction
D
The relative resistance to motion between any two bodies in contact with one another is called _______ A) clamp force B) running clearance C) coefficient of friction D) friction
D
The terms sliding clutch and __________ can be used interchangeably. A) sliding gear B) synchronizer C) splitter shift D) sliding collar
D
Truck transmissions are specifically selected to match the ________ of the vehicle. A) synchronization B) operation C) action D) vocation
D
Truck transmissions are specifically selected to match the ___________ of the vehicle. A) synchronization B) operation C) action D) vocation
D
What can be recognized by a slight wetting of an area on the component? A) Rust B) Oil leak C) Worn air lines D) Oil weep
D
What is one of the most common causes of universal joint and driveshaft failures? A) Rust B) Radial play C) Free play D) Lack of proper lubrication
D
What is the frequency at which the driveline's vibrations are the most damaging? A) Warping B) Torsional C) Dampening D) Resonance
D
What is the manufacturing process that makes the surface of a gear much harder than its core? A) Mating B) Thickening C) Meshing D) Hardening
D
What relay is only supplied when the vehicle has an Ultrashift transmission with a data mechanical or DM clutch? A) Shaft speed B) Start enable C) Electric shift assembly D) Momentary engine ignition interrupt
D
What type of bleeding method uses the master cylinder to push fluid and air from the system? A) Vacuum B) Gravity C) Pressure D) Manual
D
What type of bleeding method works well for systems that tend to trap air in the hydraulic system that cannot be bled manually? A) Pumping B) Unpressured C) Gravity D) Vacuum
D
What type of brake is a type of transmission shaft brake geared to one countershaft? A) Conventional clutch B) Torque-limiting clutch C) Upshift D) Inertia
D
What type of gears do not produce any axial thrust when they are in operation? A) Herringbone B) Helical C) Idler D) Spur
D
What type of joints has a series of six balls inside? A) Slip joints B) Constant velocity joints C) Carden joints D) Rzeppa joints
D
What types kf lubricants are manufactured rather than refined and have much longer service life? A) Mineral-based B) Petroleum-based C) Extreme pressure D) Synthetic-based
D
What types of vehicles are subjected mostly to off-road operation and typically are heavily loaded? A) Line-haul B) Heavy-duty C) Severe-duty service D) Vocational
D
When a clutch slips on engagement or during operation, the cause might be which of the following? A) Oil-soaked discs B) Too much free play at pedal C) Starting in too high a gear for the load D) Clutch worn out
D
When a self-adjusting clutch is removed, what must be installed before the cover attaching bolts are loosened? A) Release bearings B) Drive pins C) Shipping blocks D) Shipping bolts
D
When troubleshooting the air shift system, the engine should be turned off after building normal vehicle ___________ A) aerodynamics B) temperature C) fluid pressure D) air pressure
D
Which of the following on the countershaft and the main shaft create the transmission's ratios? A) Sliding gears B) Friction discs C) Range gears D) Speed gears
D
_______ gearing attempts to minimize the disadvantages of bevel gears by using helically cut teeth. A) Spur B) Idler C) Rack-and-pinion D) Spiral bevel
D
______________ refers to the inherent vibration effects caused by the acceleration and deceleration of the rotating driveshaft. A) Cross-phasing B) Phasing C) Brinelling D) Excitation
D
