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C OF Q 310T PREP EXAM QUESTIONS AND CORRECT ANSWERS!!, Exams of Advanced Education

C OF Q 310T PREP EXAM QUESTIONS AND CORRECT ANSWERS!!

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C OF Q 310T PREP EXAM QUESTIONS AND CORRECT ANSWERS!!
1. What procedure should be followed before using a bench grinder?
a) Dress stone and set rest with minimum clearance of 3 mm (1/8").
b) Dress stone and set rest with maximum clearance of 1.6 mm (1/16").
c) Set rest with minimum clearance of 3 mm (1/8") and dress stone.
d) Set rest with maximum clearance of 1.6 mm (1/16") and dress stone. - ANSWER b)
Dress stone and set rest with maximum clearance of 1.6 mm (1/16").
2. What should be inspected on a chain sling before the technician uses it?
a) Length and size.
b) Bends and color.
c) Elongation and twist.
d) Date of manufacture and expiry date. - ANSWER c) Elongation and twist.
3. Where would a technician obtain information on a recurring problem?
a) Shop foreman.
b) The service manual.
c) The operators manual.
d) Technical service bulletins. - ANSWER d) Technical service bulletins
4. What is the proper procedure to clean up a coolant spill?
a) Cover with floor dry.
b) Wash into floor drain.
c) Contain with a floor dam.
d) Refer to MSDS information. - ANSWER d) Refer to MSDS information
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C OF Q 310 T PREP EXAM QUESTIONS AND CORRECT ANSWERS!!

  1. What procedure should be followed before using a bench grinder? a) Dress stone and set rest with minimum clearance of 3 mm (1/8"). b) Dress stone and set rest with maximum clearance of 1.6 mm (1/16"). c) Set rest with minimum clearance of 3 mm (1/8") and dress stone. d) Set rest with maximum clearance of 1.6 mm (1/16") and dress stone. - ANSWER b) Dress stone and set rest with maximum clearance of 1.6 mm (1/16").
  2. What should be inspected on a chain sling before the technician uses it? a) Length and size. b) Bends and color. c) Elongation and twist. d) Date of manufacture and expiry date. - ANSWER c) Elongation and twist.
  3. Where would a technician obtain information on a recurring problem? a) Shop foreman. b) The service manual. c) The operators manual. d) Technical service bulletins. - ANSWER d) Technical service bulletins
  4. What is the proper procedure to clean up a coolant spill? a) Cover with floor dry. b) Wash into floor drain. c) Contain with a floor dam. d) Refer to MSDS information. - ANSWER d) Refer to MSDS information
  1. Where is the data link located on a highway tractor? a) Left side of glove box. b) In the fuse panel. c) Beside the Electronic Control Unit. d) Left lower dash panel. - ANSWER d) Left lower dash panel.
  2. What steps should be followed when utilizing Torque-to-Yield fasteners? a) Lubricate threads and torque to specifications. b) Rotate to specified degrees and torque to specifications. c) Torque to specifications and rotate to specified degrees. d) Tighten a specified number of degrees with an impact. - ANSWER c) Torque to specifications and rotate to specified degrees
  3. What type of hose or tubing should be used on the compressor air outlet? a) Nylon tubing. b) Stainless steel tubing. c) Reinforced rubber air brake hose. d) Braided stainless steel with a Teflon inner lining. - ANSWER d) Braided stainless steel with a Teflon inner lining
  4. What type of seal would be considered as a static seal? a) Oil filter seal. b) Rear wheel seal. c) Rear crankshaft seal. d) Transmission output shaft seal. - ANSWER a) Oil filter seal.
  5. What would be indicated by engine oil contaminated with coolant?

d) Cylinder liner O-rings. - ANSWER b) Oil cooler core.

  1. What would indicate that the engine oil pump regulating valve is stuck open? a) Increased oil pressure. b) Decreased oil pressure. c) Increased oil consumption. d) Decreased oil consumption. - ANSWER b) Decreased oil pressure
  2. What will cause a diesel engine to run rough and stall? a) Poor fuel quality. b) A plugged return line. c) Air in the fuel system. d) Low transfer pump pressure. - ANSWER c) Air in the fuel system.
  3. What is the cause of low fuel transfer pump pressure? a) Plugged fuel filter. b) Return line restriction. c) Leaking fuel tank vent. d) Regulating valve stuck closed. - ANSWER a) Plugged fuel filter
  4. Which will cause a diesel engine to have low power output? a) Cracked intercooler. b) Excessive turbocharger speed. c) Leaking turbocharger exhaust outlet. d) Turbocharger waste-gate valve stuck closed. - ANSWER a) Cracked intercooler.
  5. What must be used on an engine equipped with a diesel particulate filter (DPF)?

a) Fuel lubricity additive. b) Low sulphur Diesel fuel. c) 5% Bio-Diesel/Ethanol blend. d) Ultra low sulphur diesel fuel. - ANSWER d) Ultra low sulphur diesel fuel

  1. What will happen when the soot loading on a diesel particulate filter (DPF) exceeds 80%? a) Reduced fuel economy. b) A forced manual regeneration. c) Engine de-rate and shutdown. d) The DPF will bypass automatically. - ANSWER c) Engine de-rate and shutdown
  2. What exhaust smoke color would indicate a leaking "Dosing" valve? a) Blue. b) Black. c) White. d) Brown. - ANSWER b) Black
  3. What does the second number in a SAE fault code (e.g. 100 - 4) indicate? a) Type of circuit failure. b) Type of sensor circuit. c) Message identification. d) Number of fault occurrences. - ANSWER a) Type of circuit failure
  4. What would happen to the engine if the ECM does not receive a speed/timing signal? a) Exceed governed speed.

b) Only when necessary. c) When a failure occurs. d) As soon as the drain plug is removed. - ANSWER a) Mid-stream.

  1. What should be done before removing an injection nozzle for testing or repair? a) Check the injection pump timing. b) Change the primary fuel filter. c) Clean the area around the injector thoroughly. d) Bend the injection line slightly for clearance. - ANSWER c) Clean the area around the injector thoroughly
  2. How is an intake manifold pressure test performed on a turbocharged engine? a) Install a gauge at the turbine housing outlet and load the engine. b) Install a gauge at the compressor housing outlet and load the engine. c) Install a gauge at the compressor housing inlet and load the engine. d) Install a gauge at the compressor housing outlet and run the engine at high idle. - ANSWER b) Install a gauge at the compressor housing outlet and load the engine.
  3. What is the correct service procedure when the DPF warning light is flashing? a) Remove DPF for cleaning. b) Refill the Urea reservoir. c) Perform a manual regeneration. d) Run the engine at high idle. - ANSWER c) Perform a manual regeneration
  4. When servicing the SCR system what is a necessary step? a) Wear PPE to avoid electrical shock. b) Wear PPE for protection from high temperatures. c) Prevent skin and eye contact with the DEF (Urea).

d) Remove loose clothing to prevent contact with the DEF (Urea). - ANSWER c) Prevent skin and eye contact with the DEF (Urea)

  1. What precaution must be taken before welding on a vehicle with electronic engine controls? a) Record all fault codes. b) Attach the welder's ground clamp to the ECM. c) Attach the welding connections using reverse polarity. d) Disconnect the ECM from the vehicles power supply. - ANSWER d) Disconnect the ECM from the vehicles power supply.
  2. What is done before replacing a common rail fuel injector? a) Release residual pressure in the fuel pump supply circuit. b) Release the residual pressure in the accumulator (high pressure rail). c) Purge the accumulator (high pressure rail) to prevent fuel oil dilution. d) Replace the fuel filters to prevent contamination of the new injector. - ANSWER a) Release residual pressure in the fuel pump supply circuit.
  3. What will cause air to leak out of the relay valve with the park brake released and the service brake not applied? a) Ruptured service brake diaphragm. b) Ruptured Park/Emergency brake diaphragm. c) Faulty secondary reservoir blow-off valve. d) Parking/Emergency brake chamber pushrod seal leak. - ANSWER d) Parking/Emergency brake chamber pushrod seal leak
  4. What will cause the wet tank air pressure to leak down overnight? a) A faulty air governor valve. b) A faulty one way check valve.
  1. What would be indicated if the ABS dash light goes out after 6 km/h? a) A faulty ECU. b) A faulty wheel speed sensor. c) No systems faults are present. d) Faulty brake modulator valve. - ANSWER c) No systems faults are present.
  2. What will cause an air brake to "cam over" during application? a) Worn cam bushings. b) Worn drums and shoes. c) Slack adjuster set too tight. d) Excessive application pressure. - ANSWER b) Worn drums and shoes.
  3. What will cause an engine braking system to operate only in the first and third stage? a) Faulty dash switch. b) Faulty brake switch. c) Faulty clutch switch. d) Faulty throttle switch. - ANSWER a) Faulty dash switch.
  4. What would be indicated if one engine brake head continues to operate after the brake switch is turned off? a) Faulty clutch switch. b) Solenoid valve stuck closed. c) Broken master piston spring. d) Broken hydraulic control valve springs. - ANSWER d) Broken hydraulic control valve springs
  1. What would happen if an exhaust brake failed to open after application? a) Engine would stall. b) Ruptured exhaust tubing. c) Turbocharger over-speed. d) Elevated exhaust temperature. - ANSWER d) Elevated exhaust temperature
  2. What will cause poor engine braking power? a) Insufficient slave piston lash. b) Excessive master piston lash. c) Excessive engine oil pressure. d) Faulty throttle position sensor. - ANSWER a) Insufficient slave piston lash
  3. What must be done daily with an air brake equipped unit? a) Drain air tanks. b) Adjust the brakes. c) Pressure test the compressor. d) Rotate the slack adjusters. - ANSWER a) Drain air tanks.
  4. What is the procedure for checking governor operation? a) Check manufacture specifications then fan the brakes. b) Remove governor from compressor and check governor spring tension. c) Reduce air and record compressor cut in, build pressure and record cut out. d) Fan the brakes until cut in pressure is achieved then check compressor run time. - ANSWER c) Reduce air and record compressor cut in, build pressure and record cut out.
  5. What is done when replacing the double check valve between the primary and secondary air tanks?
  1. What must be done when replacing S-cams on an air brake equipped vehicle? a) Replace the automatic slack adjusters. b) Ensure that S-cams have the correct rotation designation. c) Inspect or replace the service brake chamber diaphragms. d) Turn the S-cam bushings 180ยบ to promote even wear. - ANSWER b) Ensure that S-cams have the correct rotation designation.
  2. Which of the following describes a function of an engine compression brake? a) Closes the intake valve on the power stroke. b) Closes the exhaust valve on the power stroke. c) Opens the intake valve on the compression stroke. d) Opens the exhaust valve on the compression stroke. - ANSWER d) Opens the exhaust valve on the compression stroke
  3. What do you do prior to setting the slave valve clearance of an engine compression brake? a) Position the piston of the cylinder to be adjusted at TDC. b) Ensure that the intake valves are fully closed on the cylinder to be adjusted. c) Ensure that the exhaust valves are fully closed on the cylinder to be adjusted. d) Cycle the solenoid valve to purge all the oil out of the engine brake housing. - ANSWER c) Ensure that the exhaust valves are fully closed on the cylinder to be adjusted.
  4. How should a clutch switch be adjusted? a) So that the switch is opened when the clutch brake is engaged. b) So that the switch is closed when the brake pedal is depressed. c) So that the switch is closed when the clutch pedal is depressed. d) So that the switch is opened when the clutch pedal is depressed. - ANSWER d) So that the switch is opened when the clutch pedal is depressed
  1. What should be done after installing an exhaust brake? a) Adjust the intake and exhaust valves. b) Measure the exhaust system temperature. c) Measure exhaust backpressure before the brake housing. d) Measure exhaust backpressure after the brake housing. - ANSWER c) Measure exhaust backpressure before the brake housing
  2. What would cause a battery to continuously show signs of moisture near the vent caps? a) Overfilling of the cells. b) Voltage regulator set too high. c) Open stator winding in the alternator. d) Dirty connections at the battery terminals. - ANSWER b) Voltage regulator set too high
  3. What would be indicated by a difference of 2 volts between the alternator output terminal and the positive battery terminal? a) A sulphated battery. b) Voltage regulator is set too low. c) High resistance in the cables and connections. d) Alternator current output is below specifications. - ANSWER c) High resistance in the cables and connections.
  4. How would a shorted diode affect alternator output? a) System voltage would be out of specifications. b) The starter would not be able to crank the engine. c) Alternator current output would be above specifications.

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  1. What is indicated if system voltage is present across the terminals of a toggle switch in the "on position"? a) Circuit is open. b) Normal condition. c) Switch contacts are open. d) Switch contacts are shorted. - ANSWER b) Normal condition
  2. What should be done before performing a battery load test? a) Charge the battery for 15 seconds. b) Discharge the battery for 30 seconds. c) Determine the batteries state of charge. d) Check the condition of the battery cables. - ANSWER c) Determine the batteries state of charge.
  3. What is the procedure for checking charging system regulated voltage? a) Use a carbon pile to control alternator output. b) Measure system voltage with engine at 1000 rpm. c) Turn on all electrical loads and run engine at 1000 rpm. d) Measure system voltage while alternator output is below 1/3. - ANSWER d) Measure system voltage while alternator output is below 1/
  4. What is done to test for voltage drops in the cranking motor circuit? a) Check and clean all connections. b) Measure starter cable resistance with an ohmmeter. c) Check voltage across the cables while the engine is running. d) Compare battery voltage to starter terminal voltage while cranking the engine. -

ANSWER d) Compare battery voltage to starter terminal voltage while cranking the engine

  1. What is done when adding additional loads (such as lights) to a circuit? a) Increase switch rating. b) Increase circuit protection. c) Size the conductors to the load. d) Balance the load from one side to the other. - ANSWER c) Size the conductors to the load
  2. What procedure should be used to repair several damaged conductors in a wiring harness? a) Solder and tape the wires. b) Twist and insulate the wires. c) Solder the wires with staggered joints. d) Stagger splice joints and insulate the wires. - ANSWER d) Stagger splice joints and insulate the wires
  3. What will cause a gasoline engine to run fine at idle but miss under load? a) A plugged air cleaner. b) EGR valve stuck open. c) A defective knock sensor. d) High resistance plug wires. - ANSWER d) High resistance plug wires
  4. What is indicated if the cruise control system will not engage (set)? a) Open clutch switch contacts. b) Defective park brake switch. c) Inaccurate speedometer calibration.

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  1. What would cause a network error message indicating one module is offline? a) Open network harness fuse. b) Open backbone wiring harness. c) Excessive network signal traffic. d) High resistance module power connection. - ANSWER d) High resistance module power connection
  2. What should be done before installing spark plugs? a) Measure the reach. b) Check the heat range. c) Adjust the electrode gap. d) Torque to specifications. - ANSWER c) Adjust the electrode gap.
  3. What must be connected when working with electronic circuits? a) A test harness. b) A surge protector. c) A static ground strap. d) A module housing ground. - ANSWER c) A static ground strap
  4. What is the procedure for adjusting speed sensor air gap on the output shaft of a transmission? a) Bottom the sensor lightly on a tone ring tooth, back out 1/4 - 1/2 turn. b) Turn the sensor towards the tone ring teeth to achieve running clearance. c) Turn the sensor in until there is a light drag on a 0.4 mm (0.016") feeler gauge. d) Bottom out the sensor and back off 1/4 turn while rotating the driveshaft by hand. - ANSWER a) Bottom the sensor lightly on a tone ring tooth, back out 1/4 - 1/2 turn.
  1. What is the procedure for repairing an open J1939 data link backbone? a) Solder and heat shrink the wires. b) Install new terminating resistors. c) Twist the wires together at 1 ft. intervals. d) Splice wires while maintaining the twist rate. - ANSWER d) Splice wires while maintaining the twist rate
  2. What should not be done when downloading new information to an ECM? a) Unplug the data link. b) Connect the data link. c) Leave the key-switch on. d) Change the computer settings. - ANSWER a) Unplug the data link
  3. What would cause a double disc clutch to rattle when the clutch is released? a) Warped clutch discs. b) Excessive flywheel run-out. c) Excessive drive lug clearance. d) Clutch brake adjusted too high. - ANSWER c) Excessive drive lug clearance
  4. What would be indicated by a grinding noise when trying to shift a five speed synchronized transmission from 4th to 5th gear? a) Worn blocking rings. b) Worn main drive gear teeth. c) Worn countershaft drive gear teeth. d) Insufficient clutch free pedal travel. - ANSWER a) Worn blocking rings