HEXA

305 / 1906

ENGINE
71
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 entrance of any particles into the pump.
Oil Pump Specifications :
Number of Lobes in Inner
Rotor
10
Number of Lobes in Outer
Rotor
11
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± 50C
At Engine max
speed( 4000 rpm)
Pressure = 4.5 bar
Temperature = 125± 50C
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
located 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
contaminants 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 and fitment .procedure of oil
filter, refer regular maintenance engine
section.