DAF CF65, CF75, CF85 Series . Manual - part 213

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2-1

General

CE-ENGINE LUBRICATION SYSTEM

ΧΦ65/75/85 series

2

4

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 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

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 200351

General

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ΧΦ65/75/85 series

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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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2-3

General

CE-ENGINE LUBRICATION SYSTEM

ΧΦ65/75/85 series

2

4

Cylinder head
From the main oil channel, vertical oil channels 
pass through the cylinder block to the cylinder 
head. This bore is continued in the cylinder head 
to supply lubricating oil to the rockers.

Piston and gudgeon pin
The pistons are lubricated by oil nozzles (B). 
In addition to its lubricating function, the 
lubricating oil has an important cooling function.
A hole has been drilled at the top of the 
connecting rod, through which the oil that the oil 
nozzles spray against the piston head may reach 
the upper big-end bearing.

Turbocharger
The turbocharger is lubricated via an oil pipe from 
the oil filter.
The oil discharge pipe from the turbocharger is 
connected to the cylinder block, from where the 
oil returns to the oil sump.
The oil returning from the air compressor flows 
from the front of the air compressor to the timing 
gear, and from there to the oil sump.

Air compressor
The air compressor is supplied with oil from an oil 
channel in the timing gear case connected to the 
main oil channel.
The oil returning from the air compressor flows 
from the front of the air compressor to the timing 
gear case, and from there to the oil sump.

M201123

M201122

CE-ENGINE LUBRICATION SYSTEM

2-4

©

 200351

General

4

ΧΦ65/75/85 series

2