Engine Block Diagnosis And Repair Flashcards Preview

ASE diesel engines > Engine Block Diagnosis And Repair > Flashcards

Flashcards in Engine Block Diagnosis And Repair Deck (10):
1

The camshaft is supported by pressure lubricated _____ at _____ .

Interference fit cylinder block located camshaft bearings are removed ______ usually from front to back using ______ and _______.

The cam lobe must be inspected for signs of _____ , ______ , or _____

1 friction bearings , main journals
2 sequentially , bearing driver , slide hammer
3 pitting , scoring , flat spots

2

Camshaft end play is defined by either _____ or ______ thrust washers. Thrust loads are not normally excessive unless the camshaft is driven by a _____.

Cam followers ride on the cam lobe and transfer the motion of the cam lobe to the _______.

On newer engines cam followers are typically _______ .

1 free , captured , helical tooth gears
2 valve train
3 rollers ?

3

The difference between piston diameter and cylinder bore diameter is ______ clearance.

When there is a low oil pressure concern oil pressure must be verified using a ______.

Some manufactures use external oil pumps that have lines routed out of the ______ and returning near the ______.

Most internal oil pumps can be accessed by removing the _______ .

1 piston to cylinder wall
2 master gauge
3 block , bypass valve

4

Piston rings are ______ floating or ______ floating piston pins are held with _______ .

Installing the piston in the incorrect direction can result in interference with the ______, _______,and ______ counterbalance .

Measure piston diameter at ______ angles ______ inch below the bottom edge of the lowest ring groove.

1 full , semi , retaining clips
2 valve heads , piston cooling nozzles , crankshaft
3 right , one

5

Erosion on the head of a piston is usually caused by _________.

Overheating can result from poor _______ , _______ through the engine or _______ .

Piston diameter is measured ________ degrees from the wrist pin approx ______ inch from the bottom of the skirt.

1 overheating
2 coolant circulation , insufficient air flow , over fueling
3 90 , 1/2

6

Typical diagnostic routine
1 _________
2 _________
3 ________
4 _________

The two most important pieces of info in the vin# are _____ and ____ digit.

The ____ represents the engine.
The ____ represents the model year.


1 listen to the complaint , road or dyno test , perform diagnostic tests , make repairs and verify .
2 8th / 10 th
3 8 th / 10 th

7

An inspection of the crankshaft begins with ______ and _____ .

Perform a careful inspection of the crank by measuring ______ or more places around the journals diameter.

To identify a tapered journal measure the diameter nearest each ______ and the _______ of the journal.

1 connecting rods , main bearing shells
2 two
3 side , middle


8

If the main bearing bore is out of alignment , uneven pressure is applied to each _______ , causing the ______ to ______ .

Use a ______ to verify main bearing bore alignment .

Failure to align the main bearing shell oil passages will result in oil starvation , _____ , ______ , ________ .

1 bearing , crank , flex
2 master bar
3 bearing fatigue , scoring , metal in oil

9

Incorrect counterbore depth can result in _______ .

Cylinder walls or liners inspection should include checking for _______ using a _________ micrometer.

Out of round condition can be detected by measuring the diameter at one point inside the cylinder and rotating ________ around the cylinder______ .

Typically liner taper and out of round should not exceed ________ inches.

1 leaking head gaskets
2 taper , inside
3 inside micrometer , 180
4 0.001

10

Cast aluminum oil pans that fasten both to the cylinder block and to the flywheel housing are prone to _______ in the rear .

___________ is the measurement from the centerline if the main bearing bore to the head gasket surface.

Threaded gallery plugs maybe _______ or ___________ o ring .

1 stress cracking
2 deck height
3 tapered pipe thread , straight threaded