Skip to main content

TROUBLE SHOOTING OF LUBRICATION STYSTEM

 The commonly occurring troubles in the lubricating system are unduly low or excessively high oil pressures.

Low oil pressure

  • Low oil level, which may be checked by the dipstick. Fill till the correct level or to Crankcase.
  • The oil may have been diluted with constant use, which has to be changed.

High oil pressure

  • The oil used may be of too high a viscosity, which may be drained out and the oil with correct viscosity filled in.
  • The oil lines, galleries may be clogged, which may be cleaned.
  • Oil pressure gauge may be defective which may be inspected and repaired.

Grades of Engine oil:

  • The Society of Automotive Engineers (SAE) developed a scale for both engine (motor oil grades) and transmission oils.
  • Viscosity is notated using the common classification “XW-XX”.
  • The number preceding the “W” (winter) rates the oil’s flow (viscosity) at zero degrees Fahrenheit (-17.8 degrees Celsius).
  • The lower the number, the less the oil thickens in cold weather. 
  • The numbers “XX” indicate viscosity at 100 degrees Celsius and represent the oil’s resistance to thinning at high temperatures.
  • For instance, oil with a 5W-30 grade thickens less than oil with a 10W-30 grade in cold weather. 
  • Oil with a 5W-30 grade thins out more quickly at high temperatures as compared to oils with a 5W-40 grade.

Few grades of Engine oil are as follows:

    • 0W-20
    • 0W-40
    • 5W-30
    • 5W-40
    • 10W-30
    • 10W-40
    • 15W-40
    • 20W-50 
*******Thanks*******

Comments

Post a Comment

Popular posts from this blog

IGNITION SYSTEMS

Ignition system is a system in an internal combustion engine that produces the spark to ignite the mixture of fuel and air.  It includes the battery, ignition coil, distributor, spark plugs, and associated switches and wiring.  It is a part of the electrical system which carries the electrical current to a current plug.  It gives the spark to ignite the air-fuel mixture at the correct time Ignition Function:   It produces 30,000 volt spark across spark plug  It Distributes high voltage spark to each spark plug in correct sequence  Time of the spark occurs when piston is near to top dead center  Spark timing varies with load, speed, and other conditions Basic Ignition System: The components in ignition system are as follow:  Battery,  Switch ignition distributor  Ignition coil  Spark plugs and  Necessary wiring Ignition System types: A battery of 12 volts is generally employed. However, a very high voltage surge (of...
Post a Comment
Read more

WHAT IS DIFFERENTIAL? HOW DOES IT WORKS?

  Differential is an integral part of all four wheelers. A differential is used to allow the wheels to spin at different speeds. This is necessary when the vehicle turns.  Parts of Differential: Pinion drive gear: transfer power from the drive shaft to the ring gear. Ring gear: will transfer power to differential case assembly. Rear drive axel: Transfer torque from differential assembly to the drive wheels. Spider gears: The spider gear lies at the heart of the differential and special mention should be made about its rotation. Differential case assembly: Hold the gear and drive the axel. Working of Differential: When turning, the inner and outer wheels have arcs of different turning radii. The inner wheels travel less distance than the outer wheels. From the drive shaft power is transferred to the pinion gear first, since the pinion and ring gear are meshed, power flows to the ring gear. As the spider gear is connected with the ring gear, po...
Post a Comment
Read more

Trouble shooting of Cooling System

Check the coolant level in your vehicle if it is overheating . If there is insufficient coolant in the vehicle, overheating will occur while driving. Add the appropriate amount of coolant to the coolant reservoir. Inspect your vehicle's thermostat to determine if it is stuck. If your thermostat is stuck, your vehicle will overheat almost immediately after driving a short distance. Another way to check the thermostat is to start the car, open the hood and feel the radiator hose. If the lower part of the radiator hose is hot and the upper part is cool, the thermostat is stuck.  Look at your fan belt to determine if it is broken or loose . Tighten the connections for the fan belt or replace it if necessary. Determine if the cooling system is clogged. Drain and flush the coolant from the cooling system to unclog it. Check the water pump to see if it is faulty and replace it if necessary *******Thanks*******
Post a Comment
Read more