WorksheetsAUT 102 Chapter 21 Week 8/9 Quiz
Total questions: 20
Worksheet time: 10mins
The ability to recognize engine failures that are beyond repair will help the automotive technician to know whether it is more cost effective for the customer to replace rather than repair the engine.
True
False
Typically, once a defective engine is replaced, the broken engine is sent to the parts store from which the new engine was purchased for a “________.”
Core switch
Core return
Part switch
Part return
Engine machining is performed any time the ________ of an engine component must be adjusted by adding or removing material.
Torque handling capacity
Weight
Tolerances
Surface hardness
It is important that all pistons have _________ between the cylinder head and the cylinder block to maintain equal compression values.
Slightly differing amounts of space
Zero space
Increasing amounts of space
The exact same amount of space
The _______ is approximately 2 inches thick and bolts in place where the cylinder head is fastened on to the engine block
Guide plate
Torque plate
Pressure plate
Block plate
When preparing to hone a cylinder, first, clean the cylinder walls with solvent; then scrub them with ________ and a stiff brush to remove any metal and stone particles.
An undiluted cleaning agent
Hot water
Warm, soapy water
A chemical cleaning solution with one part water
Before boring a cylinder, the size of the _______ must be known.
Connecting rod
Piston
Bearing
Valves
Crankshafts are usually ground to all of the following EXCEPT:
0.02"
0.01"
0.04"
0.03"
Using the induction hardening method allows the crankshaft to be reground on the _________ without having to redo the hardening process.
Main bearing journals
Rod bearing journals
Both A and B
Neither A nor B
Technician A says that semi-floating wrist pins can be pressed into the rods. Technician B says that a rod heater can be used to install semi-floating wrist pins. Who is correct?
Tech A
Tech B
Both Tech A and B
Neither Tech A or B
Technician A says crankshaft oil passage holes do not need to be chamfered after journal polishing is finished. Technician B says the big end of a connecting rod must be resized to ensure proper bearing crush. Who is correct?
Tech A
Tech B
Both Tech A and B
Neither Tech A or B
Technician A says if in aluminum cylinder head is overheated enough, the cylinder head can become warped and cause cam bores to become misaligned. Technician B says if the aluminum head has removable cam bearing caps, the bore can be machined in a process similar to line boring of the main bearing journals to correct the misalignment. Who is correct?
Tech A
Tech B
Both Tech A and B
Neither Tech A or B
Before any machining can begin after the disassembly and cleaning of the cylinder head, the cylinder head should be ________ to locate any external cracks.
Magnafluxed or dye checked
Microscopically examined
Both A and B
Neither A nor B
If oil pressure in an engine ________, then the camshaft lacks lubrication and can score the camshaft bores in the cylinder head.
Increases
Remains constant
Falls
Increases dramatically before equalizing
Knurling is:
reaming the guide oversize and using a valve with an oversized valve stem
when a bit with a spiral groove is threaded through or run through the valve guide
installing a thin-walled aluminum liner
installing a thick-walled guide that is made of aluminum
If an engine has a balance issue during initial creation and testing, the factory will calculate the necessary amount of ________ needed.
Bob weights
Counterbalance
Mallory metal plugs
Piston weight
When performing engine balancing, for every 10 ounces of steel you drill out, you can fit ____ ounces of Mallory metal into the resulting hole.
5
10
20
30
When weight is needed to be added to a crankshaft during balancing:
use stainless steel plugs
weld a cast iron bead
use Mallory metal plugs
None of the answers listed
