DAF CF65, CF75, CF85 Series . Manual - part 446

 

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DAF CF65, CF75, CF85 Series . Manual - part 446

 

 

©

 200324

3-9

Inspection and adjustment

PE ENGINE FUEL SYSTEM

CF65/75/85 series

4

5

Bleeding by pressurising the fuel tank

}

To prevent deformation of the fuel 

tank, the delivery pressure in the fuel 

tank must not exceed 0.4 bar.

1.

Remove the fuel tank cap and replace it by a 

cap with an adjustable air connection.

Note:

Use a cap (without a vent) that has a 

connection for a pressure reducer valve.

2.

Pressurise the tank to a maximum of 0.2 bar.

3.

Loosen the union nut on the injector.

4.

Tighten the union nut to the specified torque, 

see "Technical data".

5.

Repeat points 1, 2 and 3 for the other 

injectors.

i400600

1

3

0

4

2

i 400237

PE ENGINE FUEL SYSTEM

3-10

©

 200324

Inspection and adjustment

5

CF65/75/85 series

4

3.6 INSPECTION, GALLERY PRESSURE

}

When inspecting the gallery 

pressure, fuel will escape. Collect 

this fuel, bearing in mind the risk of 

fire.

}

Dirt in the fuel system can lead to 

significant damage to pump units 

and housing. 

1.

Remove the plug (1) from the fuel fine filter or 

from the pump housing.

2.

Connect an attenuated liquid pressure 

gauge with a range of 0 - 10 bar to the free 

connection point.

Note:

Before inspecting the gallery pressure at the 

starting speed, the fuses of the UPEC engine 

management system must be removed from 

the central box before and after ignition to 

stop the engine running and avoid fault 

messages.

3.

Then check the gallery pressure at idling 

speed, full load and starting speed and 

compare the measured values to the 

specified values. See "Technical data".

4.

Remove the pressure gauge and fit the 

plug (1).

5.

Bleed the fuel system.

i400528

1

1

I4 00 672

©

 200324

3-11

Inspection and adjustment

PE ENGINE FUEL SYSTEM

CF65/75/85 series

4

5

3.7 CHECKING THE FUEL PREFILTER/WATER SEPARATOR

Note:

If a fuel prefilter/water separator is fitted, there 

are two further versions. 

"Racor" version
1.

Check the reservoir (5) for water.

2.

If necessary, drain the water off through the 

drain plug (8) using the fuel lift pump (1) and 

collect the water and fuel in a container.

1

2

3

4

7

6

8

i400356

PE ENGINE FUEL SYSTEM

3-12

©

 200324

Inspection and adjustment

5

CF65/75/85 series

4

"Mann & Hummel" version
1.

Check the reservoir (5) for water.

2.

If necessary, drain the water off through the 

drain plug (6) using the fuel lift pump (1) and 

collect the water and fuel in a container.

1305803

1305803

G000252

6

8

1

2
3

4

7

5

 

 

 

 

 

 

 

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