Test Bank For Automotive Mechanics Volume 2 9th Edition By Simpson

Chapter 03 Testbank Student: ___________________________________________________________________________ 1. How is a valve assembly dismantled? 2. What is used to remove an old head gasket from the head surface? 3. How are cylinder heads fastened back on to the block? 4. The most common problems with valve lifter noise are caused by: A. contamination of the engine oil B. excessive oil pressure causing lifters to pump up C. air bleeding into the lifter while the engine is stopped D. use of full synthetic oils in older engines 5. When dismantling engines, spark plugs are removed to allow access to the combustion chamber. True False 6. Cylinder-head bolts are released progressively in the recommended sequence. True False 7. Cylinder-head faces and block faces should be cleaned with a sanding disc. True False 8. After block bolt holes have been cleaned with a tap, they should be blown with air to remove any particles of carbon. True False 9. General methods for cylinder-head crack detection include: A. dropping special balls on the head surface B. striking the head with metal and listening for a dull sound C. using an oven to expand the head and identify the crack D. using dye to identify cracks 10. One bolt-tightening sequence often used would commonly be: A. in a spiral from the outside in B. in a spiral from the centre bolts outwards C. in a diagonal from outside in D. from the front to the back 11. As a general rule, head gaskets: A. can be used more than once B. can be used either way up C. must be replaced every 10 000 km D. can be used only once 12. When using a torque wrench to tension head bolts: A. they are tightened in one step B. they are tightened in two steps C. they are overtightened and then backed off to the correct tension D. they are tightened in three steps 13. For an accurate valve-clearance adjustment: A. adjust when cold then recheck when hot B. adjust when hot then recheck when cold C. use two feeler gauges, one a little thicker and one a little thinner D. use a dial gauge on the cam end of the rocker arm 14. The most time-efficient method of valve-clearance adjustment on a V6 engine is usually achieved by starting at: A. number one and following the firing order B. the rear cylinders and progressing forward C. the front and going towards the rear D. the left bank and following with the right bank 15. Weak valve springs could cause: A. burnt valves B. tappet noises C. side thrusts on the guide D. excessive valve-train friction 16. Valve seals can be replaced in some engines without removal of the cylinder head by: A. using a small tool through the plughole to support the valve B. holding the valve up with a screwdriver or similar tool C. using the piston to stop the valve falling down D. applying air pressure to the cylinder on the compression stroke 17. Hydraulic lifters can be tested for: A. ramp speed B. leak-down rate C. oscillation rate D. rotation speed 18. When reconditioning valve faces, they are usually: A. ground B. machined C. coated D. polished 19. Valve seats can be reconditioned by either: A. grinding or stamping B. cutting or polishing C. stamping or cutting D. grinding or cutting 20. Typical valve stem to guide clearance should be between: A. 0.5 mm and 1.0 mm B. 0.5 mm and 0.1 mm C. 0.05 mm and 1.0 mm D. 0.05 mm and 0.1 mm 21. The outer diameter of new valve guides must be: A. marginally larger than the cylinder head guide hole B. marginally smaller than the cylinder head guide hole C. the same as the diameter of the valve stem D. the same size as the cylinder head guide hole 22. Knurling valve guides is a process that: A. increases the guide diameter to fit the new valve B. establishes vertical grooves for oil retention C. eliminates the need to ream D. reduces the effective guide diameter 23. The tool used to measure camshaft lift for comparison to the specification is: A. a dial gauge B. a ball gauge C. a vernier caliper D. a crankshaft degree circle 24. Timing belts should NOT be: A. bent or kinked B. twisted or folded C. all of the given options are correct D. exposed to oil 25. If the assembled valve height is increased, then: A. the valve spring force remains the same B. the valve spring force is increased C. the valve spring force is reduced D. none of the given options is correct. 26. During removal of the rocker shaft assembly for OHC engines, it is important that: A. all retaining bolts are gradually and evenly released B. the engine is set at approximately 60 BTDC so that the valves don’t release onto the pistons C. the engine is set at TDC #1 with timing marks aligned D. the cylinder head is removed before removal of the rocker shaft assembly 27. What process is being carried out in the following picture? A. Valve lapping. B. Seat removal. C. Valve removal. D. Seat grinding. 28. After cleaning, a cylinder head should be checked for: A. cracks B. warping C. all of the given options are correct. D. rough surface or corrosion Chapter 03 Testbank Key 1. (p. ) How is a valve assembly dismantled? A valve-spring compressor is used (Figure 3.6). After releasing the compressor, the retainer, spring, seal and spring seat can be removed. Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Medium Section: Removing and dismantling cylinder heads 2. What is used to remove an old head gasket from the head surface? A scraper can be used to remove the old cylinder-head gasket. Handy hint: oven cleaner will clean the combustion chamber and ports after the heavy carbon has been removed. Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Easy Section: Removing and dismantling cylinder heads 3. (p. ) How are cylinder heads fastened back on to the block? A spiral tightening sequence is often used for tightening cylinder-head bolts. The cylinder-head bolts can be tightened to a specified torque using a torque wrench. With many cylinder heads, the bolts are tightened using a torque-angle method. With this method, the bolts are tightened to a specified torque and then tightened further by turning them through a specified angle or angles. Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Medium Section: Installing cylinder heads 4. The most common problems with valve lifter noise are caused by: A. contamination of the engine oil B. excessive oil pressure causing lifters to pump up C. air bleeding into the lifter while the engine is stopped D. use of full synthetic oils in older engines Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Easy Section: Servicing hydraulic lifters and lash adjusters 5. (p. ) When dismantling engines, spark plugs are removed to allow access to the combustion chamber. FALSE Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Easy Section: Cylinder head service 6. Cylinder-head bolts are released progressively in the recommended sequence. TRUE Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Easy Section: Removing and dismantling cylinder heads 7. Cylinder-head faces and block faces should be cleaned with a sanding disc. FALSE Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Easy Section: Removing and dismantling cylinder heads 8. (p. ) After block bolt holes have been cleaned with a tap, they should be blown with air to remove any particles of carbon. TRUE Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Easy Section: Removing and dismantling cylinder heads 9. (p. ) General methods for cylinder-head crack detection include: A. dropping special balls on the head surface B. striking the head with metal and listening for a dull sound C. using an oven to expand the head and identify the crack D. using dye to identify cracks Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Easy Section: Removing and dismantling cylinder heads 10.(p. ) One bolt-tightening sequence often used would commonly be: A. in a spiral from the outside in B. in a spiral from the centre bolts outwards C. in a diagonal from outside in D. from the front to the back Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Medium Section: Installing cylinder heads 11. (p. ) As a general rule, head gaskets: A. can be used more than once B. can be used either way up C. must be replaced every 10 000 km D. can be used only once Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Easy Section: Installing cylinder heads 12. (p. ) When using a torque wrench to tension head bolts: A. they are tightened in one step B. they are tightened in two steps C. they are overtightened and then backed off to the correct tension D. they are tightened in three steps Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Easy Section: Installing cylinder heads 13. (p. ) For an accurate valve-clearance adjustment: A. adjust when cold then recheck when hot B. adjust when hot then recheck when cold C. use two feeler gauges, one a little thicker and one a little thinner D. use a dial gauge on the cam end of the rocker arm Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Medium Section: Valve-clearance adjustments 14. (p. ) The most time-efficient method of valve-clearance adjustment on a V6 engine is usually achieved by starting at: A. number one and following the firing order B. the rear cylinders and progressing forward C. the front and going towards the rear D. the left bank and following with the right bank Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Medium Section: Valve-clearance adjustments 15. Weak valve springs could cause: A. burnt valves B. tappet noises C. side thrusts on the guide D. excessive valve-train friction Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Hard Section: Servicing valves and springs 16. (p. ) Valve seals can be replaced in some engines without removal of the cylinder head by: A. using a small tool through the plughole to support the valve B. holding the valve up with a screwdriver or similar tool C. using the piston to stop the valve falling down D. applying air pressure to the cylinder on the compression stroke Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Medium Section: Servicing valves and springs 17. (p. ) Hydraulic lifters can be tested for: A. ramp speed B. leak-down rate C. oscillation rate D. rotation speed Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Easy Section: Servicing hydraulic lifters and lash adjusters 18. (p. ) When reconditioning valve faces, they are usually: A. ground B. machined C. coated D. polished Competency: AURTTM3011 Recondition engine cylinder heads Difficulty: Easy Section: Valve refacers and refacing 19. (p. ) Valve seats can be reconditioned by either: A. grinding or stamping B. cutting or polishing C. stamping or cutting D. grinding or cutting Competency: AURTTM3011 Recondition engine cylinder heads Difficulty: Easy Section: Valve-seat reconditioning 20.(p. ) Typical valve stem to guide clearance should be between: A. 0.5 mm and 1.0 mm B. 0.5 mm and 0.1 mm C. 0.05 mm and 1.0 mm D. 0.05 mm and 0.1 mm Competency: AURTTM3011 Recondition engine cylinder heads Difficulty: Medium Section: Servicing valve guides 21. (p. ) The outer diameter of new valve guides must be: A. marginally larger than the cylinder head guide hole B. marginally smaller than the cylinder head guide hole C. the same as the diameter of the valve stem D. the same size as the cylinder head guide hole Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Hard Section: Servicing valve guides 22. (p. ) Knurling valve guides is a process that: A. increases the guide diameter to fit the new valve B. establishes vertical grooves for oil retention C. eliminates the need to ream D. reduces the effective guide diameter Competency: AURTTM3011 Recondition engine cylinder heads Difficulty: Medium Section: Servicing valve guides 23.(p. ) The tool used to measure camshaft lift for comparison to the specification is: A. a dial gauge B. a ball gauge C. a vernier caliper D. a crankshaft degree circle Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Medium Section: Camshaft service 24.(p. ) Timing belts should NOT be: A. bent or kinked B. twisted or folded C. all of the given options are correct D. exposed to oil Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Easy Section: Camshaft service 25. (p. ) If the assembled valve height is increased, then: A. the valve spring force remains the same B. the valve spring force is increased C. the valve spring force is reduced D. none of the given options is correct. Competency: AURTTM3011 Recondition engine cylinder heads Difficulty: Medium Section: Servicing valve-seats 26.(p. ) During removal of the rocker shaft assembly for OHC engines, it is important that: A. all retaining bolts are gradually and evenly released B. the engine is set at approximately 60 BTDC so that the valves don’t release onto the pistons C. the engine is set at TDC #1 with timing marks aligned D. the cylinder head is removed before removal of the rocker shaft assembly Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Medium Section: Dismantling the valve mechanism 27. (p. ) What process is being carried out in the following picture? A. Valve lapping. B. Seat removal. C. Valve removal. D. Seat grinding. Competency: AURTTM3011 Recondition engine cylinder heads Difficulty: Easy Section: Valve-seat reconditioning 28. (p. ) After cleaning, a cylinder head should be checked for: A. cracks B. warping C. all of the given options are correct. D. rough surface or corrosion Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Difficulty: Medium Section: Removing and dismantling cylinder heads Chapter 03 Testbank Summary Category Competency: AURLTE3002 Repair engines and associated engine components (light vehicle) Competency: AURTTM3011 Recondition engine cylinder heads Difficulty: Easy Difficulty: Hard Difficulty: Medium Section: Camshaft service Section: Cylinder head service Section: Dismantling the valve mechanism Section: Installing cylinder heads Section: Removing and dismantling cylinder heads Section: Servicing hydraulic lifters and lash adjusters Section: Servicing valve guides Section: Servicing valve-seats Section: Servicing valves and springs Section: Valve refacers and refacing Section: Valve-clearance adjustments Section: Valve-seat reconditioning # of Questions 22 6 14 2 12 2 1 1 4 7 2 3 1 2 1 2 2