LR3/Disco 3
The water outlet assembly connects the cooling channels of the cylinder block to the cooling channels of the LH and RH
cylinder heads and provides the coolant outlet for the EGR and coolant return.
LUBRICATION SYSTEM
General
Oil is drawn from the reservoir in the oil pan and pressurised by the oil pump. The output from the oil pump is then filtered
and distributed through internal oil passageways.
All moving parts are lubricated by pressure or splash oil. Pressurised oil is also provided for operation of the hydraulic
adjusters and the timing gear chain tensioners.
The engine is lubricated by a force-feed oil circulation system with a full flow oil filter. The oil cooler forms a unit with the
oil filter and fuel cooler, which is mounted centrally in the middle of the cylinder block between the two banks of cylinders.
The engine oil is cooled using the engine cooling system. The eliminates the need for an additional engine oil cooler
remotely mounted.
The fuel cooler, which forms part of the oil filter body, is also cooled by engine coolant. In addition there is a further fuel
cooler in the return line to the fuel tank.
The oil returns to the oil pan under gravity. Large drain holes through the cylinder heads and cylinder block ensure the
quick return of the oil, reducing the volume of oil required and enabling an accurate check of the contents soon after the
engine stops.
System replenishment is through the oil filler cap on the RH camshaft cover.
Item Part Number
Description
1
-
Bolt, 4 of
2
-
Water outlet assembly
3
-
Seals
A
-
Water outlet housing assembly, EGR outlet
B
-
Water outlet housing assembly, radiator outlet
C
-
Water outlet housing assembly, bleed valve
