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AUT 102 Chapter 21 Week 8/9 Quiz

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

How does a technician verify piston slap repair?

a)

By measuring the engine block size.

b)

By testing the vehicle on a cold start-up.

c)

By visually inspecting the piston bore before reassembly.

d)

By comparing the piston measurements to manufacturer's specifications.

2.

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.

a)

True

b)

False

3.

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 “________.”

a)

Core switch

b)

Core return

c)

Part switch

d)

Part return

4.

Engine machining is performed any time the ________ of an engine component must be adjusted by adding or removing material.

a)

Torque handling capacity

b)

Weight

c)

Tolerances

d)

Surface hardness

5.

It is important that all pistons have _________ between the cylinder head and the cylinder block to maintain equal compression values.

a)

Slightly differing amounts of space

b)

Zero space

c)

Increasing amounts of space

d)

The exact same amount of space

6.

The _______ is approximately 2 inches thick and bolts in place where the cylinder head is fastened on to the engine block

a)

Guide plate

b)

Torque plate

c)

Pressure plate

d)

Block plate

7.

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.

a)

An undiluted cleaning agent

b)

Hot water

c)

Warm, soapy water

d)

A chemical cleaning solution with one part water

8.

Before boring a cylinder, the size of the _______ must be known.

a)

Connecting rod

b)

Piston

c)

Bearing

d)

Valves

9.

Crankshafts are usually ground to all of the following EXCEPT:

a)

0.02"

b)

0.01"

c)

0.04"

d)

0.03"

10.

Using the induction hardening method allows the crankshaft to be reground on the _________ without having to redo the hardening process.

a)

Main bearing journals

b)

Rod bearing journals

c)

Both A and B

d)

Neither A nor B

11.

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?

a)

Tech A

b)

Tech B

c)

Both Tech A and B

d)

Neither Tech A or B

12.

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?

a)

Tech A

b)

Tech B

c)

Both Tech A and B

d)

Neither Tech A or B

13.

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?

a)

Tech A

b)

Tech B

c)

Both Tech A and B

d)

Neither Tech A or B

14.

Before any machining can begin after the disassembly and cleaning of the cylinder head, the cylinder head should be ________ to locate any external cracks.

a)

Magnafluxed or dye checked

b)

Microscopically examined

c)

Both A and B

d)

Neither A nor B

15.

If oil pressure in an engine ________, then the camshaft lacks lubrication and can score the camshaft bores in the cylinder head.

a)

Increases

b)

Remains constant

c)

Falls

d)

Increases dramatically before equalizing

16.

Knurling is:

a)

reaming the guide oversize and using a valve with an oversized valve stem

b)

when a bit with a spiral groove is threaded through or run through the valve guide

c)

installing a thin-walled aluminum liner

d)

installing a thick-walled guide that is made of aluminum

17.

An internally balanced engine is balanced completely ________.

a)

By removing weights

b)

By adding weights

c)

From the inside

d)

By adding counterbalance shafts only at a local machine shop

18.

If an engine has a balance issue during initial creation and testing, the factory will calculate the necessary amount of ________ needed.

a)

Bob weights

b)

Counterbalance

c)

Mallory metal plugs

d)

Piston weight

19.

When performing engine balancing, for every 10 ounces of steel you drill out, you can fit ____ ounces of Mallory metal into the resulting hole.

a)

5

b)

10

c)

20

d)

30

20.

When weight is needed to be added to a crankshaft during balancing:

a)

use stainless steel plugs

b)

weld a cast iron bead

c)

use Mallory metal plugs

d)

None of the answers listed