Final Test Study Flashcards
During the disengagement process, the clutch release levers move the clutch release bearing.
True
False
False
An engine drive uses the spring controlled centrifugal clutch so as to allow for engine idling.
True
False
True
Flywheel, clutch housing and transmission housing face runout checks are conducted to ensure components will be parallel to one another during operation.
True
False
True
Which device allows a driveline to change in length during operation?
a. full round yoke
b. universal joint
c. half round yoke
d. slip joint
d. slip joint
Universal joint working angles are not affected by driveline speed.
True
False
False
A basic driveline configuration has one shaft. More complex driveline configurations use:
a. a single shaft
b. belts and pulleys
c. multiple shafts
d. chains and sprockets
c. multiple shafts
The gear pitch line is used to divide the following gear tooth areas:
a. heel and toe
b. drive and coast
c. face and flank
d. fillet and profile
c. face and flank
When installed between a drive and driven gear, an idler gear affects speed and torque changes between the two gears.
True
False
False. Changes rotating direction.
Which of the following gear ratios would be a reduction gear ratio?
a) 0.10:1
b) 1.00:1
c) 10.00:1
d) 1.00:2
c. 10.00:1
Multiple countershaft transmissions use several housings. These housings are kept in alignment through the use of:
a) shouldered bolts.
b) precise doweling.
c) tapered plugs.
d) floating cap screws.
b) precise doweling.
The formula for determining gear ratio is the number of teeth on the driven gear divided by the number of teeth on the drive gear.
True
False
True
The input shaft and gear:
a) deliver torque to the mainshaft gears.
b) are supported on bushings.
c) are driven by the clutch discs.
d) utilize a lip seal for sealing.
c) are driven by the clutch discs.
The three speed auxiliary section provides:
a) 15 gear speeds.
b) 18 gear speeds.
c) 13 gear speeds.
d) 12 gear speeds.
d) 12 gear speeds.
Why are lithium ion batteries desirable for electric hybrid applications?
a) high discharge rates and low storage capacity.
b) high discharge rates and high storage capacity.
c) Low discharge rates and high storage capacity.
d) low discharge rates and low storage capacity.
c) Low discharge rates and high storage capacity.
The purpose of the range, splitter and deep reduction cylinders is to:
a) transmit the gearshift lever actions to shift the auxiliary section sliding clutches.
b) use the air signal to shift the main section sliding clutches.
c) use the air signal to shift the auxiliary section sliding gears.
d) use the air signal to shift the auxiliary section sliding clutches.
d) use the air signal to shift the auxiliary section sliding clutches.
The air filter/regulator generally regulates air to ________________ pressure.
a) 18 psi to 26 psi.
b) 58 psi to 63 psi.
c) 97 psi to 103 psi.
d) 120 psi to 130 psi.
b) 58 psi to 63 psi.
The range cylinder is a double acting cylinder that uses a spring to hold it in the low position and air to shift it into the high position.
True
False
False
The transmission shift controller contains:
a) electronic control unit and dash display.
b) electronic control unit and operator shift console.
c) operator shift console and dash display.
d) main section electric shifter and range/splitter assemblies.
b) electronic control unit and operator shift console.
Leaking output shaft seals, worn output shaft bearings and broken synchronizer pins are often an indication of a problem with the:
a) engine and transmission mounts.
b) clutch systems.
c) driveline.
d) shift mechanism.
c) driveline
Premature input shaft bearing failure or slip out in direct gear is often an indication of a problem with the:
a) engine and transmission mounts.
b) clutch systems.
c) driveline.
d) shift mechanism.
a) engine and transmission mounts.
A visual inspection process is an integral part of the transmission disassembly procedure.
True
False
True
When establishing the buffer zone around a diesel electric hybrid, what is the recommended distance the cones be placed from each corner of the vehicle?
a) 0.5m
b) 1.0m
c) 1.5m
d) 2.0m
b) 1.0m
Regulated air is applied to keep the range in low and the splitter in low.
True
False
True
What medium of stored energy is contained within an accumulator?
a) gaseous
b) fluid
c) fluid and gas
d) plasma
c) fluid and gas
The indicator light for the power takeoff system is activated by an engagement switch located in the shift valve.
True
False
False
What device does a full time transfer case use to prevent driveline windup?
a) planetary gear set.
b) typical differential assembly
c) limited slip clutch pack
d) windup clutch
a) planetary gear set.
On the air actuated power takeoff system, what is the air routed through before going to the air valve?
a) pressure protection valve
b) pressure regulator valve
c) flow control valve
d) the shift cylinder
a) pressure protection valve
PTO backlash must be measured between:
a) the PTO input gear and the PTO output gear.
b) the PTO input gear and the idler.
c) the PTO input gear and the transmission drive gear.
d) the transmission drive gear and the transmission input gear.
c) the PTO input gear and the transmission drive grear.
The gross combination weight rating refers to the:
a) amount of weight each axle can carry.
b) combined gross axle weight ratings for a vehicle.
c) total combined gross axle weight ratings for a vehicle and it’s trailers.
d) amount a vehicle weighs empty.
c) total combined gross axle weight ratings for a vehicle and it’s trailers.
The input shaft drives the helical drive gear through a set of splines.
True
False
False
Which components are attached to the drive axle housing?
a) suspension components.
b) wheels tires and hubs.
c) carrier housing
d) all of the above
d) all of the above
The temperature at which the truck should be shut down and the cause of the excessive heat established and repaired is:
a) 160F
b) 220F
c) 250F
d) 275F
c) 250F
When checking pinion bearing preload using a cord and a spring scale, record the reading required to start the assembly rolling.
True
False
False, force required to keep it rolling.
On a carrier assembly, if a thrust screw is used, mark the spot with the most ________________ the thrust screw side of the bevel gear.
a) back face runout toward.
b) back face runout away.
c) radial towards.
d) radial away from.
a) back face runout toward.
- What type of controls regulate the flow of air conditioning refrigerant or heater coolant without driver input?
a) active
b) passive
c) supplemental
d) mandatory
b) passive
- The maximum allowable filling limit for any refrigerant container is:
a) 65% of its internal volume
b) 75% of its internal volume
c) 80% of its internal volume
d) 90% of its internal volume
c) 80% of its internal volume
- From what electrical terminal does the low beam headlight circuit receive electrical power?
a) ignition switched terminal.
b) constant power terminal
c) safety power terminal.
d) high power terminal
b) constant power terminal
- What component prevents all warning lights from illuminating when one warning light is illuminated?
a) fusible link
b) buzzer
c) relays
d) isolating diodes
d) isolating diodes
- A hall effect sensor sends an amperage signal to the ammeter by:
a) measuring the current along the shunt.
b) using an integrated circuit amplifier.
c) reversing the current flow
d) grounding the signal from the alternator.
b) using an integrated circuit amplifier.
- High wear of brass bushings would be indicated in an oil analysis as high ppm of:
a) copper and zinc
b) copper and tin
c) brass and copper
d) tin and silver
a) copper and zinc
- A metal fracture surface that indicates several beach marks and a final fracture area is best described as:
a) a ductile fracture.
b) a fatigue fracture.
c) a brittle fracture.
d) a beach fracture
b) a fatigue fracture
- Prior to inspection, metal specimens taken from a failure must be thoroughly cleaned, preferably with a power wire wheel.
True
False
False
35.The three major components of a power steering system are the:
a) pump, connecting lines and reservoir
b) steering gear, connecting lines and reservoir
c) relief valve, connecting lines and pump.
d) reservoir, pump and steering gear.
d) reservoir, pump and steering gear.
- In a rack and pinion steering system, the movement of the wheels is controlled through the upper steering arm.
True
False
False
- After installing new king pin bushings you must ream the new bushings out.
True
False
False
- Which of the following alignment measurements or angles are adjustable?
a) toe and caster
b) toe out on turns
c) kingpin inclination
d) camber and kingpin inclination
a) toe and caster
42) A cross tube that has been bent due to a collision with an obstacle in off road conditions will affect which alignment measurements or angles?
a) caster
b) camber
c) toe out on turns
d) toe
d) toe
- When viewed from the front of the vehicle, both front tires appear to have positive camber. The tires are tilted:
a) in at the top.
b) out at the top
c) forward.
d) rearward
b) out at the top
- The order in which the ECU instructs the modulator valve to control air pressure is:
a) hold, reapply and exhaust.
b) reapply, exhaust and hold.
c) exhaust, hold and reapply.
d) exhaust, reapply and hold.
c) exhaust, hold and reapply.
- The function of an ABS modulator valve assembly include:
a) transmitting signals to the ECU
b) receiving signals from the ECU
c) transmitting signals to the wheel speed sensors.
d) receiving signals from the wheel speed sensors.
b) receiving signals from the ECU
- R-134A refrigerant, when held at a gauge pressure of 1.9 psi, turns into a vapor at at temperature of:
a) -30F
b) -10F
c) 30F
d) 70F
b) -10F
- When the air conditiong system contains a fixed expansion tube and an accumulator, the thermostatic switch may be replaced with a:
a) ambient temperature switch.
b) high pressure switch.
c) clutch cycling switch.
d) Binary switch
c) clutch cycling switch
- The Binary switch acts like a:
a) low pressure switch
b) high pressure switch
c) ambient temperature switch
d) all of the above
d) all of the above
- The maximum allowable filling limit for any refrigerant container is:
a) 65%
b) 75%
c) 80%
d) 90%
c) 80%
- What percentage of ozone is concentrated in the stratosphere?
a) 40%
b) 70%
c) 90%
d) 100%
c) 90%
- R134a refrigerant has an ODP of:
a) 0
b) 2
c) 4
d) 8
a) 0
