WorksheetsLubrication Systems
Total questions: 20
Worksheet time: 2hrs 40mins
The safety device in a full-flow oil filtration system that ensures that oil will reach the engine bearings even if the filter is completely clogged is the ____.
Bypass valve
Pressure regulator valve
Restrictor orifice
Vent tube
Which of the following is a possible cause of high engine oil pressure?
Clogged oil filter
Low oil level in the crankcase
Oil filter leak
Oil in the crankcase is too heavy
Which of the following is a possible cause of low engine oil pressure?
Defective pressure gauge
Improper regulator valve spring
Oil pump leak
Restricted oil gallery
Which component controls the oil pressure as it flows through the oil pump?
Bypass valve
Crescent pump
Pressure regulator valve
Restrictor orifice
Which type of electrical oil pressure indicating system has a digital gauge instead of a warning light?
Electromagnetic coil indicating system
Electronic indicating system
Heating coil indicating system
Pressure switch indicating system
The part of a force-feed lubrication system that maintains sufficient pressure to lubricate the engine’s moving parts is the ____.
Oil cooler
Oil pickup line
Oil pressure relief valve
Oil pump
According to most OEMs, synthetic oils should be used during an engine’s break-in period.
True
False
Viscosity is a measure of an oil’s thickness or resistance to flow.
True
False
The greatest amount of wear in an external gear pump is generally found on the housing.
True
False
Tube oil coolers are usually mounted in the engine or the crankcase.
True
False
In a bypass oil filtration system, approximately 90% of the oil is diverted to the filter housing.
True
False
The purpose of the oil pressure warning light is to alert the operator to low oil pressure conditions.
True
False
The heat exchanger used to keep oil temperature in the most efficient range is also referred to as a(n) (a) .
The area where the oil pan is attached to the engine block is called the (a) .
The system that provides oil to a diesel engine is the (a) system.
The oil level in most mobile diesel engines is checked using a calibrated (a) .
Mobile engines sometimes have a breather or (a) as the outlet for a ventilation system.
The two types of diesel engine lubrication systems currently in use are the splash lubrication system and the (a) lubrication system.
Another term for a bolt-on filter is (a) filter.
An oil filter that is installed onto a threaded bushing and base on the engine and tightened to proper specifications is a(n) (a) filter.
