DAF CF65, CF75, CF85 Series . Manual — part 447

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Removal and installation

PE ENGINE FUEL SYSTEM

CF65/75/85 series

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5

4. REMOVAL AND INSTALLATION

4.1 REMOVAL AND INSTALLATION, FUEL INJECTION PIPE

Removing the fuel injection pipe

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Always leave the injection pipes

fixed together as a complete set.

Never remove or shift the clamping

brackets (A) holding the pipes

together. Never bend injector pipes

as they may crack.

1.

Disconnect the earth lead from the battery

terminal.

2.

Clean the union nuts and the area around

both the injectors and the pump housing.

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When slackening the injection pipe

union nuts, hold the injector's side

connection back using an open-end

spanner. If this is not done, there is a

good chance that the side

connection will leak.

Immediately plug the openings.

3.

Remove the fuel injection pipes as a set.

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A

A

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Removal and installation

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CF65/75/85 series

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Installing the fuel injection pipe
1.

Blow the injector pipes with dry

compressed air.

Then turn the injector side towards the

injectors.

2.

Position the set of injector pipes with the

head on the connection of the pump unit (see

diagram).

3.

Tighten the union nuts to the pump

connection by hand in the order 1-2-3

or 4-5-6.

4.

Then tighten the union nuts on the injector

side by hand in the order 1-2-3 or 4-5-6.

5.

Then tighten the union nuts on the pump side

in the order 1-2-3-4-5-6. Tighten them to the

specified torque. See "Technical data".

6.

Now tighten the union nuts on the injector

side in the order 1-2-3-4-5-6.

}

When tightening the injector pipe

union nuts, hold the injector's side

connection back using an open-end

spanner. If this is not done, there is a

good chance that the side

connection will leak.

7.

Tighten the injector pipe union nuts to the

specified tightening torque. See "Technical

data".

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Removal and installation

PE ENGINE FUEL SYSTEM

CF65/75/85 series

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5

4.2 REMOVAL AND INSTALLATION, INJECTOR

}

Due to the presence of overpressure

in the fuel tank, fuel may run into the

cylinders when removing injectors.

Therefore, when removing injectors,

always first remove the tank cap.

Collect any fuel from the injectors.

Removing the injector
1.

Disconnect the earth lead from the battery

terminal.

2.

Remove the injector pipes as a set.

3.

Remove the valve cover.

4.

Remove the DEB.

5.

Remove the attachment bolt (3) from the

injector clamp. To remove the injector and

the clamping piece, only use the special

tools (DAF no. 1329412) and

(DAF no. 0694928).

Note:

If during removal one or more copper shims

(1) remain in the injector sleeve, the injector

will be reinstalled in a higher position.

As a result, instead of spraying into the

combustion chamber of the piston, the fuel

will be sprayed onto the piston ring. This may

seriously damage the piston.

There will be inadequate sealing between

the O-ring (2) of the injector and the cylinder

head. Fuel leaking from the injector can flow

freely into the engine and dilute the

lubricating oil.

3

2

1

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Removal and installation

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CF65/75/85 series

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Installing the injector
1.

Clean the injector sleeve. See "Cleaning".

2.

Fit a new O-ring (1) and a new copper shim

(2) to the injector. Apply a little acid-free

grease to both rings.

3.

Inspect the valve sleeve seal (3) of the

injector. Replace it if it is leaking and/or

damaged.

Note:

Make sure that the injector clamp is installed

correctly.

4.

Fit the injector together with the injector

clamp (4) and tighten the attachment bolt to

the specified torque. See "Technical data".

5.

Fit the DEB.

6.

Adjust the DEB clearance.

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