DAF LF45, LF55 Series. Manual — part 298

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Removal and installation

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5.11 REMOVAL AND INSTALLATION, ELECTRONIC UNIT COOLING PLATE

When removing the cooling plate,

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.

Note:

The electronic unit, together with the cooling

plate, must first be removed from the engine

block, after which the cooling plate must be

demounted.

Removing electronic unit cooling plate
1.

Disconnect the earth lead from the battery

terminal.

2.

To prevent dirt from entering, first clean the

area around the fuel connections.

3.

Remove the fuel pipes (1) on the cooling

plate of the electronic unit.

4.

Uncouple the electrical connectors (2) from

the electronic unit and loosen the attachment

clip (3) from the cable harness.

5.

Remove the attachment bolts by which the

electronic unit is fitted to the engine block.

6.

Remove the electronic unit and cooling plate.

7.

Remove the attachment bolts by which the

electronic unit is fitted to the cooling plate

and remove the cooling plate.

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Installing electronic unit cooling plate
1.

Clean the cooling side of the electronic unit

and the cooling plate.

2.

Inspect the sealing surfaces of the cooling

plate and the electronic unit for damage and

smoothness.

3.

Fit a new sealing rubber (1) in the cooling

plate.

4.

Fit the cooling plate to the electronic unit and

fit the bolts attaching the two parts. Tighten

the attachment bolts to the specified torque.

See "Technical data".

5.

Fit the electronic unit and cooling plate to the

engine block and fit the attachment bolts.

Tighten the attachment bolts to the specified

torque. See "Technical data".

6.

Connect the electrical connectors to the

electronic unit and attach the cable harness

with the clips.

7.

Connect the quick-release couplings of the

fuel pipes to the electronic unit cooling plate.

8.

Bleed the fuel system. See "Inspection and

adjustment".

9.

Fit the earth lead to the battery terminal.

10. Start the engine and check the fuel system

for leaks.

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Removal and installation

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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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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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