DAF CF65, CF75, CF85 Series . Manual — part 429

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200416

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Removal and installation

CE ENGINE FUEL SYSTEM

ΧΦ65/75/85 series

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5.12 REMOVAL AND INSTALLATION, FUEL RETURN OVERFLOW VALVE

When removing the fuel return
overflow valve valve, fuel will
escape. Collect the fuel and avoid
the risk of fire.

Dirt in the fuel system can lead to
significant damage to parts of the
system. Prevent this by cleaning the
parts before disassembly and then
sealing all open connections.

Removing the fuel return overflow valve
1.

To prevent dirt from entering, first clean the
area around the fuel return connection.

2.

Remove the fuel return pipe (1) on the fuel
return overflow valve (2) and plug the pipe.

3.

Remove the fuel return overflow valve and
collect the escaping fuel.

Installing the fuel return overflow valve
1.

Install the fuel return overflow valve. Haal het
brandstofretour-overstroomventiel aan met
het voorgeschreven aanhaalmoment, zie
hoofdgroep "Technische gegevens".

2.

Connect the quick-release couplings of the
fuel return pipe to the fuel return overflow
valve.

3.

Start the engine and check the fuel system
for leaks.

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Removal and installation

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ΧΦ65/75/85 series

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5.13 REMOVAL AND INSTALLATION, LOW-PRESSURE FUEL PIPES

When removing the low-pressure
fuel pipes, fuel will escape. Collect
the fuel and avoid the risk of fire.

Dirt in the fuel system can lead to
significant damage to parts of the
system. All open connections must
therefore be sealed.

The low-pressure fuel pipes may have two
different types of quick-release coupling.

VOSS quick-release coupling

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Removal and installation

CE ENGINE FUEL SYSTEM

ΧΦ65/75/85 series

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John Guest quick-release coupling

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Removal and installation

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ΧΦ65/75/85 series

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Low-pressure fuel pipes fitted with VOSS
quick-release couplings

Removing low-pressure fuel pipes
1.

Disconnect the fuel pipe (2) by inserting the
special tool (1)(DAF no. 1329470) into the
quick-release coupling and removing the
pipe from the coupling.

2.

Remove the special tool from the quick-
release coupling.

3.

Plug the openings.

Fitting low-pressure fuel pipes
1.

Clean the quick-release coupling parts and
apply a thin layer of clean engine oil to the O-
ring.

2.

Fit the pipe on the quick-release coupling of
the component and push the pipe onto it until
a clear resistance can be felt and the quick-
release coupling audibly clicks.

3.

Bleed the fuel system. See "Inspection and
adjustment".

4.

Start the engine and check the fuel system
for leaks.

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