ARIA

ENGINE

119

2.1.6.2 COMPONENTS

A. OIL PUMP

The oil pump is a simple centrifugal pump driven by

crankshaft. The pump is fitted with a relief valve.

The main function of the oil pump is to circulate oil

through the engine components. It sucks the oil from

the oil sump through a strainer which prevents en-

trance of any particles into the pump.

OIL PUMP SPECIFICATIONS:

Number of Lobes in Inner Ro-

tor

Number of Lobes in Outer Ro-

tor

Axial Play Driver Gear

0.04/0.08

Discharge at 800 rpm

11.6 LPM

Discharge at 2000 rpm

29.0 LPM

Shut of Pressure at 800 rpm

5.8 to 6.8 bar

Shut of Pressure at 2000 rpm

9.0 to 10.8 bar

Oil Pressure and temperature

At Idling

Pressure = 1.4 bar

Temperature = 100± 5

At Engine max

speed( 4000 rpm)

Pressure = 4.5 bar

Temperature = 125± 5

NOTE

For other details refer overhauling procedure for oil

pump in engine section.

B. OIL FILTER:

The oil filter used in ARIA is a

“SPIN ON TYPE”

oil

filter. In Lubrication system flow the oil filter is locat-

ed after the oil cooler and before the oil is sent to

circulate in the engine.

The main function of oil filter is to filter all contami-

nants that get ingested into the engine, along with

traces of worn out metals from bearings and other

internal parts.

The oil enters the oil filter under pressure through the

holes on the perimeter of the base plate.

The oil then passes through the filter element where

it is "cleaned". It then flows to the central tube and

back into the engine.

NOTE

For removal & fitment procedure of oil filter refer reg-

ular maintenance engine section.