190201c Engine Block and Cylinder Liner Service

Question 1

what should not be used to clean aluminum components

Answer 1

hot tank (caustic solution)

Question 2

deck warpage should not exceed _________ in the length of the block?

Answer 2

0.004” (0.102 mm)

Question 3

when pressure testing a cylinder block it should be immersed in hot water to?

Answer 3

allow the block to expand

Question 4

main bearing bores should be measured to determine

Answer 4

out of round
taper
maximum inside diameter

Question 5

main bearing bore misalignment should not exceed _______ of the minimum clearance specified for a new main bearing

Answer 5

one half (1/2)

Question 6

what should be removed from the block when cleaning for over haul, in order to clean the oil and coolant passages

Answer 6

expansion plugs (frost plugs)
threaded plugs

Question 7

if the seal rings roll or twist on installation

Answer 7

could liner bore distortion

Question 8

why would a de-glazing hone be used

Answer 8

restore the crosshatch

Question 9

the crosshatch angle should be

Answer 9

40 to 60 degrees

Question 10

when should the liner seals be lubricated

Answer 10

just before installation

Question 11

majority of cylinder wear occurs

Answer 11

top of ring travel and 90 degree to ring travel

Question 12

how would worn integrals cylinder’s would be repaired

Answer 12

boring to over size
(imperial - (0.010 0.020”, 0.030”)
S.I. (metric) - (0.25mm, 0.50mm, 0.75mm)

Question 13

what could cause scoring in a liner

Answer 13

broken piston ring

foreign material between the piston and liner`

Question 14

what is the minimum number of measurement on a liner to determine serviceability

Answer 14

4 - 90 degrees apart ( two at the top & two at the bottom)

Question 15

liner flange thickness - (minus) counterbore depth = ?

Answer 15

liner height

Question 16

when should liner height be checked

Answer 16

before and after installation

Question 17

why do cylinders need to be de-glazed

Answer 17

restore the crosshatch

Question 18

what cause scuffing in a liner

Answer 18

lack of lube
insufficient piston clearance
excessive heat

Question 19

how should a cylinder be cleaned after honing or de-glazing

Answer 19

hot water , detergent

stiff brush

Question 20

what causes cavitation on the major and minor trusts sides of a wet liner

Answer 20

implosion of air bubbles in the cooling system

Question 21

what will change if the block deck was machine to correct warpage

Answer 21

Compression ratio

Question 22

what’s the minimum amount of measurements that must be taken to determine cylinder out of round, taper and wear?

Answer 22

4 at 90 degree apart

must not vary more than 0.001”

Question 23

Liner flange thickness - counterbore depth = ?

Answer 23

Liner height (protrusion)

Question 24

the crosshatch angle can vary from _______ to ______ degrees?

Answer 24

40 to 60 degrees

Question 25

what causes cavitation on the major and minor thrust sides of a wet cylinder liner?

Answer 25

implosion of vapor bubbles in the cooling system?

Question 26

after honing or de-glazing cylinder bores , they should be thoroughly cleaned using?

Answer 26

hot water, detergent, stiff brush and lint free white rag

Question 27

what causes Scuffing in the cylinder bore?

Answer 27

lack of lubrication, Insufficient piston clearance and excessive heat

Question 28

why is a cylinder de-glazing hone used?

Answer 28

restore the crosshatch

Question 29

both wet and dry liners will have a specific height. When should liner height be checked?

Answer 29

before removal and after installation

Question 30

what will change if a block is machine to correct deck for flatness?

Answer 30

increase in compression ratio and position of the injectors

Question 31

sealing rings on a wet liner that rolls or twists during installation can cause?

Answer 31

distortion of the liner bore

Question 32

wet liner seals should be lubricated?

Answer 32

just before liner installation

Question 33

the majority of cylinder wear occurs at?

Answer 33

top of ring travel, and 90 degrees to the crankshaft | centerline

Question 34

if a dry liner has to much clearance it can be repaired by?

Answer 34

boring or honing the block for oversized liners

Question 35

what cause scoring in a liner bore?

Answer 35

Broken ring, foreign material between the piston and cylinder wall

Question 36

the purpose of the firewall on a cylinder liner is to?

Answer 36

reduce heat and pressure acting on the head gasket

Question 37

when pressure testing a cylinder block it should be immersed in hot water to?

Answer 37

allow for expansion of the cylinder block before it pressured checked (block will close to operating temperature)

Question 38

general rule main bearing bore misalignment should not exceed ________ of the minimum clearance specified for the new main bearing.

Answer 38

1/2 (one half)

Question 39

What should be removed from the engine block when cleaning the block fro overhaul, so the passages can be cleaned and flushed thoroughly.

Answer 39

``` expansion plugs (frost plugs) thread plugs ```