Level 3 ITA
What occurs as the...... increases?
line speed increases, torque increases
line speed decreases torque decreases
line speed increases, torque decreases
line speed decreases, torque increases
What does the automated manual transmission TCM communicate with?
engine control module
rail selector module
gear selection module
clutch module
What applies the clutches in an electronic automatic transmission?
oil pressure
spring pressure
proportioning solenoid
air pressure
The drive gear has 18 teeth and is turning at 1000 RPM the driven gear has 62 teeth
10 RPM
29 RPM
160 RPM
290 RPM
How is chain pitch measured in a grader final drive?
Diameter of pins
distance over 17 links
width of the rollers
distance between pins
How many inter axle differentials are on a tridem drive truck
1
2
3
4
What is used to adjust a heavy-duty drive axle pinion preload?
spacers
gaskets
washers
crush sleeve
The torque converter stall rpm is above specification what is the cause?
Seized stator clutch bearing
slipping converter lock up clutch
high main transmission pressure
slipping clutch in transmission
There is slow engagement of all clutches in an power shift transmission what is the cause
worn pump
worn clutches
pressure regulator stuck closed
incorrect engine governor speed
which conditions are required to provide forward reduction from a planetary gear set?
Ring=input, sun=held, carrier= output
sun= input, ring=held, carrier=output
Carrier= input, sun=held, Ring=output
Sun=Input, carrier=held, ring=output
Which method is used to measure the lube level in a dozer final drive housing?
Lube level is 1, below filler hole
Lube level is 2 in below filler hole
Lube level is even with bottom of filler hole
Lube level is higher than filler hole when plug is removed
What is considered when assembling a driveshaft slip joint?
Phasing
Run nut
working angles
steady hearing lubrication
A powershift transmission has a low pressure reading when testing all the clutches. What is the cause?
Overheating
Broken Regulator Spring
Slipping Clutch
Worn Converter
After replacing automatic transmission what is the procedure for checking oil level?
Warm up oil, select the range, then place in neutral
Fill and bleed torque converter, then check the clutch pressure
Drive in forward and reverse, then engage and disengage power takeoff
Select drive, operate under load then check oil for cooler output temperatures
What is required to lock the differential action of a drive axle
Lock the pinion to crowned gear
Lock carrier to crown gear
Lock to carrier bearing to crown gear
Lock side gear to crown gear
Next to the couch when selecting second gear on a non-synchronized twin counter shop transmission that connects to the clutch
Over-Centre clutch
Pin type clutch
Sliding clutch
Blocking clutch
On a J-1939 equipped power shift transmission. What is the procedure for diagnosing an active fault?
Replace the TCM, Check solenoid harness, then replace the solenoid
Check solenoid continuity, check solenoid harness, then test TCM
Replace J- 1939 Harness, Replace terminating resistor, then replace solenoid
Check oil levels, check solenoid continuity then check shift selector
There’s noise coming from the drive axle only durning it turns what is the cause?
Differential gears
Pinion bearings.
Carrier bearings.
Input shaft bearings.
is the cause? 15 speed twin countershaft transmission transmission jumps out of third gear what
Worn countershaft bearing
Twisted main shaft
Twisted synchronizer
Worn shift forks
Before moving the auxiliary section from the 18 speed from an 18 speed automated twin counter-shaft transmission what is done?
Program transmission software for removal
Install countershaft bearing retaining straps
Install counter shaft bearing spacers
Install auxiliary section alignment dowels
Why are some driveline slip joints coded with a nylon compound?
To help keep grease in
To make joints slip easier
To keep dirt and contaminants out
To reduce lubrication requirements
transmission - One active code for output speed sensor circuit. What is the cause? Given the following information 18 speed automated twin countershaft automated
Low-voltage signal to output speed sensor.
Open range valve cylinder solenoid
Open output speed sensor
Low battery voltage
A 10 speed transmission shifting slowly through both range selections what is the cause?
Range yoke bar seal
Restricted regulator filter
Broken detent spring
Deep Reduction Piston seal
What is used to adjust SAE8-bolt PTO backlash?
Washers
Shim gasket
Gasket eliminator
Change PTO drive gear
What is the maximum length of time for a stall test?
10s
30s
60s
90s
Before removing the main shaft in a main countershaft transmission what must be done?
Remove the input shaft gear.
Remove upper reverse idle gear
Remove lower countershaft
Remove lower reverse idle gear
An electronically controlled automatic transmission is not shifting out of first gear, what is the cause?
forward solenoid shorted
Reverse solenoid open
Slipping lock up clutch
Faulty output shaft speed sensor
What does the hydraulic winch system use to prevent damage to components?
Integral piston
Pressure relief valve
Three position valve
Restriction on the clutch springs
A 15 and a half inch pull type clutch fails to disengage properly, what is the cause?
Oil contamination
Cease release bearing
Pressure plate imbalance
Intermediate plate is binding
What is done first when disassembling a drive axle carrier?
Record gear tooth pattern and measure backlash
remove side bearing caps and pinion yoke
Remove pinion assembly and side bearing caps
Remove crown gear bolts and carrier bearing bolts
What is used to manage breaking action of a drive line retarder on an ABS equipped truck?
lever control
Electronic control
Hydronic control
Pneumatic control
A recently installed u joint has spalled one trunnion, what is the cause?
transmission yolk has been replaced
Excessive working angle
Loose yolk nut
Lack of lubrication
When a transmission is in gear, which mechanism prevents the slave valve from slipping?
Slave piston
Detent spring
Shift interlock
Range pre-select lockout
Clutch facings are thrown off the clutch disks, what is the cause?
coasting fast in low gear with the clutch disengaged
Skip shifting while lugging down the engine
Quickly engaging the clutch with heavy load
Starting in too high of a gear selection
A broken pinion gear tooth shows signs of beach marks , what is the cause of this failure?
Shock load
Overheating
Fatigued
Incorrect lubrication
What is done before engaging a sliding gear type of winch?
Accelerate engine
Disconnect power source
Engage PTO
Apply drum break
What is the purpose of a transfer case?
To allow for a speed differential in turns
To divide torque between front and rear drive axles
To provide overdrive operation to front and rear drive axles
To divide speed between front at rear drive axles
What is the purpose of open idle gear in a manual transmission?
To allow for a change of direction.
To create torque increase
To increase speed of driven gear.
To decrease speed of driven gear
What is the purpose of the thrust pad on a drive axles assembly
To control axel movement of the half shaft.
To control opinion under loaded conditions.
To control crown gear deflection under loaded conditions.
To control lubrication of the crown gear.
What is the primary cause of a broken axle shaft?
Wheel spin-out
Improper lubrication
Mismatched tires
Excessive backlash
U joint trunnions show signs of brinelling, what is the cause?
Excessive working angles
Out of phase
Overheating
Zero u joint working angle
What is the first step when removing a 15 1⁄2 inch pull-type clutch from the flywheel?
Remove flywheel mounting bolts
Remove release bearing
Check pilot bearing runout
Install clutch adjustment tool
The main shaft of a 13 speed twin countershaft transmission is being reassembled. 71. What is checked?
Gear in axial play
Mainshaft runout
Mainshaft endplay
Gear runout
What is done before beginning work on a final drive?
Loosen the wheel nuts
Pre-lub any replacement parts
Block the machine so that it will not roll
Drain the final drive while the oil is still hot
Which part of the torque converter or coupling is driven by the engine?
Stator
Turbine
Impeller
1-Way Clutch
As the friction material wears in an angle spring clutch, what is the effect on the clamping force
Force increases by half
Force remains constant
Force decreases by half
Force decreases proportionally
Using the spring scale method, which calculations is used to check the preload on a tapered...?
Pounds pull x radius of the hub
Pounds pull x diameter of the hub
Pounds pull x the circumference of the hub
Pounds pull x the number of the cord wraps around the hub
Which safety precautions is taken when removing a heavy duty clutch?
Install guide pins
Remove release bearing
Install a clutch alignment tool
Use a clutch lifting device
The torque converter stall rpm is below specification. What is the cause?
Lock up clutch is slipping
Stator is seized
Low transmission oil level
Free wheeling. (back spinning) stator.
What is a feature of differential gears?
Torque is divided equally.
Torque is decreased equally
Increased torque and speed
Increased torque and decreased speed
Which tool is used to measure driveline run out
Inclinometer
Dial indicator
Vernier Caliper
Micrometer
A twin countershaft transmission has multiple oil leaks. What is the cause?
Transmission overspeed
Plugged breather
Excessive oil pump pressure
PTO overuse
What is used to reduce clutch torsional vibrations?
Plastic insulators
Application springs
Dampening hub springs
Hydraulic shock absorbers
What is the formula for calculating compound gear ratios?
Ratio 1 multiplied by ratio 2
Ratio 1 divided by ratio 2
Ratio 1 added to ratio 2
Ratio 1 subtracted from ratio 2
When does a power shift transmission provide deceleration?
When locked up clutch is released
When placed in neutral
When manually up shifted
When manually downshifted
Which speeds are monitored by the computer in an automated manual transmission
Clutch shaft, main shaft and countershaft
Idler shaft, input shaft and output shaft
Clutch shaft, reverse idler gear, main shaft
Main shaft, output shaft and input shaft
Given the following information about an automatic transmission. Engine rpm above normal at a given road speed, oil smells burnt. What is the cause?
Leaking governor
Failed lock-up clutch piston seal
Misadjusted throttle position sensor
Shorted shaft (something) winding
Why is inter axle differential more prone to spin out damage than the main differential?
Inter axle differential is smaller than the main differential
Inter axle differential turns faster than the main differential
Inter axle differential case is smaller than a main differential
Inter axle differential carries more torque than the main differential
In an automatic transmission, Which speed is the transmission oil pump driven at?
Engine
Mainshaft
Turbine
Stator
An automatic transmission has been replaced after a major internal failure, which additional procedure is serviced?
Change all u joints
Replace cooler and lines
Clear all codes
Resurface flex plate
On a grader tandem drive housing, the oil sample shows high iron content, which is the fault?
Excessive chain way
drive case imbalanced
Pinion bearing failure
Excessive planetary wear
When two members of the planetary gear set are locked together what is the result?
Neutral
Reverse
Reduction
Direct drive
Initial service on a manual transmission is being performed and minor metal filings are found in the transmission.
Remove and disassemble the transmission
Take oil sample and complete service
Complete service report before continuing
Perform transmission flush
When in high and low range, an 18 speed transmission has a constant air leak at the slave valve, what is the cause?
Range yolk bar o-ring
Range piston o-ring
Plugged breather
Range selection valve o-ring
In an automated manual transmission what is a Hall effect sensor used to monitor?
Main shaft position
Auxiliary gear position
Shift rail position
Input shaft position
What is the first step before performing maintenance on a hoist winch?
Allow the drum to cool off.
Engine is shutting down and cooled off
Roof of the crane is removed to gain access
Working implement is lowered and The tension is off the cable.
What causes an excavator's final drive to be constantly overfull?
Leaking metal face sealed
Leaking hydraulic motor output shaft seal
Plug breather
Overfilled from previous service
What is the purpose of having backlash between meshing gears?
To decrease torque loss
To allow for lubrication
To limit torsional vibrations
To allow gear bottoming
A ten speed transmission has burnt high-low synchronizer, what is the cause?
High oil level
Splitter yoke bar seal
Not preselecting shift
Cease splitter valve
When a torque converter is multiplying torque, which term describes the fluid flow?
Rotary
Vortex
Turbulent
Linear
Which drive ratio increases torque?
0.73:1
0.5:1
1:2
2.73:1
Which component serves as a pump in a torque converter?
Stator
Turbine
Impeller
Clutch
Given the following information about a power shift transmission, the machine is not pushing into the pile with adequate force - stall test is being performed - rpm is about specifications. What is the cause?
Glazed clutch disks
High clutch supply pressure
Torn transmission filter elements
Free- wheeling “back-spinning” (stator).
On an automatically controlled transmission, which type of signal does the TCU use?
A/C frequency
Fixed temperature rate
Variable resistance
Pulse width modulation
What is the function of the synchronizer in a 6-speed transmission?
Match counter shaft and main shaft speed
Match sliding gear and countershaft speed
Match main shaft and selected gear speed
Match input and output speed at the same time
Which parameters work together to signal an automatic transmission to downshift?
Engine speed and impeller speed
Transmission output speed and throttle position
Throttle position and main pressure
Throttle position and engine speed
mechanically...clutch? What is the dimensions between the release bearing and the clutch release fork in a
1⁄8 inch
1⁄2 inch
1 inch
1 1⁄2 inch.
An electric drive-line retarder has weak retarding effort on all stages. What is the cause?
Faulty relay
Worn friction rotor
Shortened solenoid winding
Excessive resistance on ground cable
Which component connects the torque converter to the crank-shaft?
Clutch
Flex-plate
Bell Housing
Turbine Wheel
operation? How does lowering the suspension ride height below specifications after drive-line
By increasing drive-line vibration
By increasing drive-shaft critical speed
By increasing drive-line vibration
By decreasing drive-shaft critical speed
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