DAF LF45, LF55 Series. Manual — part 209
©
200505
1-1
Safety instructions
CE ENGINE LUBRICATION SYSTEM
ΛΦ45/55 series
2
7
1. SAFETY INSTRUCTIONS
1.1 SAFETY INSTRUCTIONS
Fuel
Diesel fuel is an extremely
flammable liquid, and must not be
exposed to naked flames or come
into contact with hot surfaces. The
diesel fuel fumes remaining in an
empty fuel tank form an extremely
explosive mixture.
When fuel system components are being
removed, some fuel will escape.
To keep this spillage to a minimum, unscrew the
tank cap to release any overpressure.
Any spilled fuel must be collected, bearing in
mind the risk of fire.
Exhaust gases
Do not run the engine in an enclosed or
unventilated area.
Make sure exhaust fumes are properly extracted.
Exhaust gases contain carbon
monoxide.
Carbon monoxide is a deadly
colourless and odourless gas,
which, when inhaled, deprives the
body of oxygen, leading to
asphyxiation. Serious carbon
monoxide poisoning may result in
brain damage or death.
Moving parts
Remain at a safe distance from rotating and/or
moving components.
Various fluids
Various oils and lubricants used on the vehicle
may constitute a health hazard.
This also applies to engine coolant, windscreen
washer fluid, refrigerant in air-conditioning
systems, battery acid and clutch fluid.
So avoid inhaling and direct contact.
Electrical short-circuit
Always disconnect the battery's earth connection
during repair or maintenance operations for
which the electric power supply is not required.
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CE ENGINE LUBRICATION SYSTEM
1-2
©
200505
Safety instructions
7
ΛΦ45/55 series
2
©
200505
2-1
General
CE ENGINE LUBRICATION SYSTEM
ΛΦ45/55 series
2
7
2. GENERAL
2.1 SYSTEM DESCRIPTION, LUBRICATION SYSTEM
General
The lubricating oil pump (1) is directly driven by
the crankshaft via an idler gear.
The lubricating oil pump draws the oil from the oil
sump and pumps it via the oil cooler (2) and the
lubricating oil filter (3) to the main oil channel in
the cylinder block. From the main oil channel, the
lubricating oil is further distributed to the various
components requiring lubrication.
Oil cooler
The oil cooler (2) is connected to the cooling
system. The oil cooler warms up the lubricating
oil in a "cold" engine and cools it in a "warm"
engine.
M201120
B
A
B
A
C
E
F
D
5
E
F
F
A
D
5
3
5
2
4
1
A
From lubricating oil pump
B
To oil cooler
C
To lubricating oil pump
D
From oil cooler
E
To oil filter
F
To main oil channel
CE ENGINE LUBRICATION SYSTEM
2-2
©
200505
General
7
ΛΦ45/55 series
2
Pressure-limiting valve
A pressure limiting valve (4) is fitted in the oil
cooler housing.
When the pressure set for the pressure limiting
valve has been reached, the valve opens and
allows the excess lubricating oil to be discharged
to the supply side of the lubricating oil pump.
Oil filter
The oil is cleaned in the disposable oil filter (3).
A pressure relief valve (5) fitted in the oil cooler
housing opens if the pressure in the filter
becomes too high as a result of contamination or
cold oil. The oil then passes through the filter
unfiltered.
Main oil channel
From the main oil channel, lubricating oil is
supplied to the crankshaft main bearings (A) and
via an oil channel in the crankshaft also to the big-
end bearings.
From the main oil channel, lubricating oil is
pumped to the camshaft.
M201260
A
B
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