chapter 2 bob questions

The very rapid (in less than one revolution) and complete stoppage of an engine is known as _____.

Sudden Stoppage

The regular use of _____ provides an operator with a record of metals present in the used engine oil.

Spectromic Oil Analysis

Engine mount bolts that are to be reused are generally checked using _____ inspection.

Magnetic Particle

With a _____ engine mount, the mounting points are turned inward so they point toward the engine’s center of gravity.

Dynafocal

The reconditioning of the cylinder, piston, and valve operating mechanism is known as a _____ overhaul.

Top

The complete reconditioning of a powerplant is known as a _____ overhaul.

Major

_____ engines are those that have been disassembled, cleaned, inspected, repaired as necessary, reassembled, and tested in accordance with approved standards.

Overhauled

_____ engines are those that have been disassembled, cleaned, inspected, repaired as necessary, reassembled, and tested to the same tolerances and limits as a new item, using either new parts or used parts that conform to new parts tolerances and limits.

Rebuilt

Hard carbon may be removed by soaking the engine parts in a _____ solution.

Decarbonizing

Engine parts manufactured from ferrous metals can be inspected for hidden cracks using _____ inspection.

Magnetic Particle

Hydraulic valve lifter plungers and cylinders _____ interchangeable with parts from another assembly.

are not

Most engine parts should be tested using both _____ and _____ magnetization.

Longitudinal, Circular

When using continuous magnetism, the magnetic particle medium is applied _____ as the magnetizing current.

at the same time

All parts which have been checked using magnetic particle inspection must be _____ before being placed into service.

demagnetized

Hydraulic valve lifter plunger assemblies _____ (should or should not) be checked using the magnetic particle inspection.

should not

All nonferrous engine parts should be inspected using the _____ inspection method.

dye penetrant

Dye-penetrant may be applied by:

Brushing, Dipping, and Spraying.

The time that a penetrant is allowed to stay on a part is called the _____ time.

dwell

The two sets of limits that appear in a manufacturer’s Table of Limits are:

New and Serviceable

Connecting rods may be checked for _____ using arbors and a parallelism gauge.

bend

What two measurements should be made when installing new piston rings on the piston?

End Gap and Side Clearance.

Dimensional inspection of cylinder barrels should include

The Cylinder Taper, Out-of-Roundness, Bore Diameter, Flange Warpage, and the Piston skirt to cylinder clearance.

All measurements involving cylinder barrels should be taken at a minimum of two positions _____ degrees apart.

90

Crankshafts are checked for straightness by placing them in vee-blocks and using a _____ indicator.

dial

A .003 oversize stud will be identified by the prefix P003 after the part number and _____ (what color) paint on the stud.

red

When the valve face is ground between 1 and 1-1/2 degrees flatter than the valve seat it is referred to as an _____ fit.

interface

Valves which have been ground so there is no margin left are said to have a _____ edge.

feather

Cylinder barrels which are worn beyond limits may be restored by:

Grinding Oversize, Chrome Plating, and Replacement.

The three grades of stones used in refacing valve seats are:

Rough, Finishing, and Polishing.

The maximum pressure used on a valve seat grinding stone should never be more than that exerted by the weight of the _____.

gun

Valve seating may be checked using _____ transfer dye.

Prussian Blue

The contact surface of a valve and valve seat should be _____ to _____ the width of the valve face, and in the middle of the face.

1/3 and 2/3

A 30 degree valve seat may be narrowed using stones ground to an angle of _____ degrees and _____ degrees.

15 and 45

Chrome-plated rings may be used with _____ cylinders.

steel

Only _____ rings can be used with nitrided or chromeplated cylinders.

cast iron

The end gaps of piston rings should be _____ on the piston.

staggered

After an overhaul, an engine should be run-in _____ or tested.

block

What term is used to describe the rigging procedure that ensures the travel of the throttle valve is not limited by the stops on the throttle control quadrant?

cushion.

To prevent failure of the engine bearings during the first start after an overhaul, some form of _____ is required.

pre-oiling

One of the steps in preserving an engine is to spray a corrosion preventative compound into each cylinder with the piston at bottom dead center. After the last cylinder is coated with the corrosion preventative compound, the crankshaft _____ be moved.

should not

Cobalt chloride treated _____ gel is used in dehydrator plugs which can be screwed into the spark plug holes of a reciprocating engine.

silica

Dehydrator plugs are _____when relatively low humidity exists.

blue