what could happen if you ignore the specific safety warning in the engine service
manual - CORRECT ANSWER-injure yourself/people on or around the boat/damage
outboard engine
a placard stating discharge of oil prohibited must be posted on all vessels more than
__ feet in length - CORRECT ANSWER-26
what CFR regulations identifies prohibited spaces where oil and hazardous material
are not to be stored - CORRECT ANSWER-33CFR155.470
what is the standard maximum ambient operating temperature for compressor drive
motors - CORRECT ANSWER-104*F
Within how many days of an inspection are you required to submit the new boat
inspection report - CORRECT ANSWER-10
List the six basic safety procedures to follow when troubleshooting or repairing
electrical components - CORRECT ANSWER-1. Never operate, repair, adjust, tamper
with equipment unless assigned to do so.
2. obey all posted operating and safety precautions
3. de-energize equipment prior to repair.
4. always wear approved PPE.
5. use insulated tools and non-metalic flashlight.
6. tighten the connections of fremovable tes leads on portable meters.
generally the crown end of the piston is slightly smaller in diameter than the skirt for
what reason - CORRECT ANSWER-to allow for expansion and proper fit
piston ring gaps should be staggered at _ degrees to reduce gas leakage - CORRECT
ANSWER-180*
in the vacuum gravity system, what part houses a set of inclined absorption plates -
CORRECT ANSWER-vacuum gravity vessel
what filter element in an OWS is used to remove small particles such as shaving and
dirt from the oily water mixture - CORRECT ANSWER-pre-filter
before working on or removing any parts of the air compressor, you should make sure
the following conditions are completed - CORRECT ANSWER-the compressor is
completely blown down and the pressure is relieved
before and during the operation of the R/O what type of general inspection should be
conducted - CORRECT ANSWER-make sure the flowmeters are clear and floats are
visable
,which safety precaution should be observed during R/O operation - CORRECT
ANSWER-make sure all pressure relief valves dischards are unobstructed and the
release fluid is conducted to low pressure area clear of personnel
what are the three effects of excessively worn rudder shaft bearings - CORRECT
ANSWER-1. imprecise and poor steering response
2.excessive vibration
3. leakage through the rudder post housing
what component registers cumulative volume in gallons of permeate being produced
by the R/O unit and being used by the ship - CORRECT ANSWER-Totalizing flow
meter
normally a diesel engine start air bank has a minimum capacity for how many cold and
hot starts - CORRECT ANSWER-1 cold and 9 hot
when conducting performance test, engines should be operated at what percentage of
coat guard load - CORRECT ANSWER-80-90%
the ODR facilitates what type of operating data - CORRECT ANSWER-1. trend
recording
2. event recording
3. dynamic recording
4. alarm recording
5. trip recording
what are the effects of a damaged propeller - CORRECT ANSWER-1. lack of power
2. high fuel consumption
3. unexpected vibration
high pressure pump creates ___ to____ PSI achieve reverse osmosis - CORRECT
ANSWER-700-1000 PSI
pulsation dampener absorbs pulsations created on the discharge side of a high
pressure pump consisting of nitrogen charged rubber bladder charged to
approximately - CORRECT ANSWER-2/3 system pressure
If the low pressure switch predetermined setting isn't met (on 110's it is 5 psi) -
CORRECT ANSWER-low pressure switch secures the high pressure pump
list the possible causes of low or variable cylinder compression - CORRECT
ANSWER-1. damaged head gasket
2. damaged pistons
3. broke or stuck piston rings
4. scored cylinder walls
5. stuck valves (four stroke)
6. Incorrectly adjusted valves(four stroke)
what are the three main areas of concern when troubleshooting a hard starting
engine? - CORRECT ANSWER-1. ignition
2.fuel
3. compression
what are the seven primary indicators for completing DEMPs? - CORRECT ANSWER-
1. cylinder compression pressure
, 2.cylinder firing pressure
3.cylinder exhaust temperature
4. crankcase vacuum
5. intake manifold pressure
6. exhaust back-pressure
7. L/O consumption
ODR will record data automatically for all files under what circumstances - CORRECT
ANSWER-as long as ODR is turned on
propulsion units are also known as what three other common terms - CORRECT
ANSWER-1. reduction gears
2. transmissions
3. marine gears
what analytical tools are used to help in the determination of an engines center
section? - CORRECT ANSWER-1. full power trials
2. observation of engine operating characteristics
3. spectrochemical analysis of the L/O
4. observation and analysis of trends found in engine operating parameters
5. physical inspection of engine componets
how does the overspeed trip usually cut off fuel to the engine? - CORRECT ANSWER-
by isolating the governor from its oil supply, causing it to travel to the no fuel position
or it can override the governor and directly trip the fuel rack to the no fuel position
how does the governor adjust the amount of fuel delivered to the engine - CORRECT
ANSWER-by adjusting the position of the fuel rack
list the functions of the fuel injector - CORRECT ANSWER-1. accurately times the
moment of fuel injection
2. atomizes the fuel for vaporization and mixing with the air in the combustion chamber
3. meter and injects the required amount of fuel to maintain engine speed and load
4. creates the high pressure required for proper fuel injection
how does the governor control speed? - CORRECT ANSWER-by regulating the
amount of fuel supplied to the engine.
when using the intake manifold pressure as a primary indicator, it is especially
important to duplicate what two settings when you are taking intake and exhaust
manifold pressures - CORRECT ANSWER-duplicate RPM and load setting
what is the main purpose of the reduction gear - CORRECT ANSWER-the reduction
gear transmits power from the driving gear to the driven gear
how often should oil be replaced - CORRECT ANSWER-1000 hours
what is the max diametric bearing clearance allowed for a 2" round shaft - CORRECT
ANSWER-.050
list the three major sub-assemblies that make a reduction gear - CORRECT
ANSWER-1. forward clutch group
2. reverse clutch group
3. output shaft group