Question 1

If a single slab cylinder head is used on an in-line 6-cylinder diesel engine, how many engine cylinders will the cylinder head cover?

Accepted Answer

A)   one
B)   two
C)   three
D)   six D

Question 2

Which of the following liner types would likely be composed of the least amount of material?

Accepted Answer

A)   dry liners
B)   wet liners
C)   wet/dry liners
D)   wet sleeves A

Question 3

When a hone is used to glaze-bust a liner what is the recommended grit stone rating?

Accepted Answer

A)   100 - 150
B)   200 - 250
C)   250 - 300
D)   300 - 350 B

Question 4

When a cylinder head bolt torque specification requires that the fastener is first torqued, then turned through a further set number of degrees, the method is known as:

Accepted Answer

A)   template torque
B)   twist torque
C)   constant clamping force
D)   bolt tensioning

Question 5

What would be a typical clearance specification for a "loose" fit dry liner?

Accepted Answer

A)   0.0005 inches
B)   0.0015 inches
C)   0.003 inches
D)   0.005 inches

Question 6

Technician A says that cylinder block torque twist can be the result of high cylinder pressures. Technician B says that cylinder block toque twist can be the result of drivetrain forces outside of the engine. Who is correct?

Accepted Answer

A)   Technician A only
B)   Technician Bonly
C)   Both A and B
D)   Neither A nor B

Question 7

What should be used to check valve seating?

Accepted Answer

A)   machinist's blue
B)   dial indicator
C)   dial bore gauge
D)   plastigage

Question 8

Which of the following is NOT usually found in heavy-duty diesel engines?

Accepted Answer

A)   wet liners
B)   parent bore
C)   dry sleeves
D)   wet/dry liners

Question 9

Where does cavitation erosion normally occur on a wet liner?

Accepted Answer

A)   fore and aft
B)   aligned with the piston thrust faces
C)   under the upper flange
D)   below the lower O-rings

Question 10

Which of the following components would NOT be classified as part of the engine housing?

Accepted Answer

A)   flywheel
B)   cylinder block
C)   cylinder heads
D)   rocker housing

Question 11

What is wet liner cavitation caused by?

Accepted Answer

A)   bubble collapse
B)   engine overheating
C)   engine overspeed
D)   water pump failure

Question 12

What material is most commonly used in the manufacturing of diesel engine cylinder heads?

Accepted Answer

A)   forged steel
B)   aluminum alloy
C)   middle alloy steel
D)   cast iron

Question 13

To what depth should a liner crosshatch be machined to?

Accepted Answer

A)   5 - 10 microinches
B)   15 - 20 microinches
C)   25 - 30 microinches
D)   30 - 40 microinches

Question 14

In a heavy-duty diesel engine, which of the following is more likely to be described as tuned?

Accepted Answer

A)   intake manifold
B)   air to air cooler
C)   exhaust manifold
D)   main exhaust pipe

Question 15

When following a cylinder head bolt torque sequence while torquing a single slab cylinder head, which bolts should be torqued last in the sequence?

Accepted Answer

A)   those in the center
B)   those on the intake side
C)   those on the exhaust side
D)   those furthest from the center

Question 16

When checking a cylinder block deck for warpage with a thickness gauge and straight edge, what would be a typical maximum specification?

Accepted Answer

A)   0.001 inch
B)   0.002 inch
C)   0.004 inch
D)   0.008 inch

Question 17

What is the recommended crosshatch crossover angle on a typical liner?

Accepted Answer

A)   10 degrees
B)   30 degrees
C)   60 degrees
D)   80 degrees

Question 18

Which of the following would be the preferred method of removing a tough-to-remove gasket from an oil pan flange?

Accepted Answer

A)   oxy-acetylene rosebud
B)   gasket eliminator chemical
C)   pneumatic gasket remover
D)   right angle grinder

Question 19

What should be done before removing a piston from a liner?

Accepted Answer

A)   remove the crankshaft
B)   remove the main caps
C)   hone a crosshatch
D)   scrape away the carbon bridge

Question 20

Technician A says that a disadvantage of an induction-hardened parent bore cylinder block is that when a single bore wears, the cylinder block has to be replaced. Technician B says that cavitation erosion is more likely to occur in engines manufactured with parent bores. Who is correct?

Accepted Answer

A)   Technician A only
B)   Technician B only
C)   Both A and B
D)   Neither A nor B

Exam 9: Engine Housing Components