MSSC Maintenance Awareness - Questions and Answers A viscosimeter is a device used for measuring the viscosity of an oil and is generally __________ accurate. 95%-99% A lube oil sample from a gearbox should be taken __
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MSSC Maintenance Awareness - Questions and Answers A viscosimeter is a device used for measuring the viscosity of an oil and is generally __________ accurate. 95%-99% A lube oil sample from a gearbox should be taken __________. as close to the gears as possible An indication of bearing problems could be __________. suspended metal found during an oil analysis __________ lubricants are ideal for use in extreme temperatures that would cause oils and greases to freeze or burn out. Solid Product buildup is the most common vibration problem on __________. air fans Low pressure in a hydraulic pump's suction line causes what malfunction? Cavitation Bearing seals can be damaged by __________. using too much lubrication Sight glasses are accurate on a gearbox __________. when the gearbox is not running The action of old grease coming out somewhere is a good sign of __________. proper greasing The manual method of lubrication is used __________. in slow speed applications where equipment can be periodically shut down In the United States, oil viscosity is measured in __________. Saybolt Universal Seconds When lubricating a pillow block bearing, the user attaches the coupler into the grease fitting and slowly pumps the handle of the grease gun __________. until old grease begins to flow out of the bearing Oil that has been contaminated by __________ will have a milky appearance. Water Heavy axial loads are better handled by __________. Angular contact bearings All electric motors require __________ bearings mounted __________ to the motor. two, internally. Before adjusting motor position during a shaft alignment always make sure to remove the __________. Dial Indicator Three types of loads placed on bearings are __________,__________and__________. radial, thrust, and combination A machine shaft and bore should always be checked for out-of-round status before performing what task? Pressing a bearing Bearing metal that flexes during use is the cause of __________ in a bearing. Ultimate fatigue A(n) __________ bearing has inner and outer races that allow it to carry heavier axial loads than a standard ball bearing. angular contact __________ couplings are used to act as a safety device if torque overload occurs. Clutch In a mechanical transmission system an electric motor is also called a __________. prime mover The two major types of misalignment that are corrected by shaft alignment are __________. angular and parallel A machine's moving component slides over a(n) __________ bearing's surface with only a lubrication film between them. Plain Motor shaft runout is checked to make sure of proper __________. alignment of mating components Before installing a flexible coupling you should check for __________. run out The mechanical advantage of a gear drive system is the ratio of the number of teeth of the driven gear divided by __________. the number of teeth of the driver gear
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