2
General
LUBRICATING OIL SYSTEM XE ENGINE
2-3
Main lubricating oil channel
From the main lubricating oil channel, lubricating
oil is supplied to the crankshaft main bearings
and through a lubricating oil channel in the
crankshaft also to the connecting rod bearings.
From the lubricating oil channel, lubricating oil is
pumped into the hollow camshaft via the first
camshaft bearing.
From the lubricating oil channel in the camshaft,
lubricating oil is supplied to the other camshaft
bearings.
Cylinder head
From the second and fifth camshaft bearings, a
lubricating oil channel passes through the
cylinder heads to the second and fifth rocker
seats.
Depending on the model, the other rocker
shafts, rockers, and bridges receive lubrication
from the DEB or a lubricating-oil strip.
Timing gear
From the lubricating oil channel in the first
crankshaft main bearing, a lubricating oil
channel leads to the hollow hub of the
intermediate gear wheel. From the hollow hub
the lubricating oil is supplied to the intermediate
gear wheel. The other gear wheels receive
lubricating oil from the intermediate gear wheel.
The fan drive is lubricated through a bore hole in
the cylinder block and a lubricating oil channel in
the timing-gear case.
Piston and gudgeon pin
The pistons and the upper connection-rod
bearings are lubricated by means of lubricating
oil nozzles linked to the main lubricating oil
channel. In addition to lubricating, this oil has an
important cooling function. For this purpose, the
pistons of the XE390C have been equipped with
additional lubricating oil channels to obtain
better cooling.
A bore hole provided at the top of the
connection rod supplies the lubricating oil that
the lubricating oil nozzles spray against the
bottom of the piston to lubricate the upper
connecting rod bearing.
7
ǹ 0008