Chapter 9 Review Questions + A Few Others Known To Be On The Test

Front 1

Which of the following cylinder block designs would be the most common in medium and heavy duty truck diesel engines?

Back 1

Inline six cylinder

Front 2

The main reason for bench pressure testing a diesel engine cylinder head is to:

Back 2

Check for coolant leaks

Front 3

When selective fitting a set of dry liners to a cylinder block, which of the following statements should be true?

Back 3

The liner with the largest od is fitted to the bore with the largest id.

Front 4

Which of the following is the recommended method of pulling dry liners from a cylinder block?

Back 4

A puller and shoe assembly

Front 5

Which of the following tools is recommended for checking cylinder block line bore?

Back 5

Master line bore bar

Front 6

When boiling out a cylinder block, why is it critical that all the scale in the water jacket be removed?

Back 6

Scale is an effective insulator.

Front 7

Which of the following tools should be used to check a cylinder block deck for warpage?

Back 7

Straightedge and thickness gauges

Front 8

Which of the following tools should be used to check a cylinder head for warpage?

Back 8

Straightedge and thickness gauges

Front 9

When cavitation damage is evident on a set of wet liners, which of the following is more likely to be responsible?

Back 9

Coolant breakdown

Front 10

When cylinder block counterbores are machined, which of the following would be required?

Back 10

Shims

Front 11

Most current heavy duty, diesel engine cylinder blocks are manufactured from:

Back 11

Compacted graphite iron (CGI)

Front 12

Once a cylinder head gasket fire ring has been torqued to its yield point, it should:

Back 12

Not be reused after removal

Front 13

Why might using heads, intake manifolds, and engine blocks of different metals might not work?

Back 13

Heat expansion. Different metals expand differently when heated.

Front 14

What is component creep?

Back 14

Creep is the relative movement of clamped engine components due to different coefficients of heat expansion or different mass.

Front 15

True or false: all the machined surfaces of a cylinder block should be checked to specification with a straightedge and thickness gauges.

Back 15

True.

Front 16

True or false: cylinder blocks should be boiled in a soak tank at every major overhaul.

Back 16

True.

Front 17

True or false: it is good practice to magnetic flux test a cylinder block for cracks at each major overhaul.

Back 17

True.

Front 18

True or false: before performing a magnetic flux test, the cylinder block should be boiled in a soak tank.

Back 18

True.

Front 19

True or false: all cylinder heads on current engines should be hot torqued after a rebuild procedure.

Back 19

False.

Front 20

True or false: cylinder head bolts should be soaked in engine lubricating oil before installation.

Back 20

False.

Front 21

What are the benefits of CGI cylinder blocks?

Back 21

70% lighter than an equivalent gray cast iron block

200% the fatigue limit of gray

40% more rigid than gray cast iron

Front 22

What caused the cylinder head problems that were shown in class?

Back 22

Improper installation of o-rings.