DAF LF45, LF55 Series. Manual - part 323

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Removal and installation

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ΛΦ45/55 series

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Low-pressure fuel pipes fitted with John 

Guest quick-release couplings

Removing low-pressure fuel pipes
1.

Disconnect the fuel pipe by pressing in both 

lips of the quick-release coupling and 

removing the pipe from the quick-release 

coupling.

2.

Plug the openings.

Fitting low-pressure fuel pipes
1.

Clean the quick-release coupling parts.

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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©

 200416

Removal and installation

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ΛΦ45/55 series

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©

 200416

6-1

Cleaning

CE ENGINE FUEL SYSTEM

ΛΦ45/55 series

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5

6. CLEANING

6.1 CLEANING INJECTOR

The injector must never be cleaned 

with a steel brush or pressure 

cleaning equipment. Never put the 

brush in the injector bores when 

cleaning the exterior of the injector 

nozzle. If this happens, the nozzle 

must be replaced. 

Before cleaning the nozzle, cover the 

injector bores. Only clean the 

injector with a brass hand brush.

Note:

The use of steel brushes can cause deformation 

of the injector bores, with the result that the wrong 

amount of fuel is injected.

This deformation cannot be ascertained by 

measurements or checks.

Note:

The disassembly and assembly of injectors is not 

permitted. Only external cleaning is permitted.

1.

Remove the injector. See "Removal and 

installation".

2.

Clean the injector hole in the cylinder head. 

The metal surface of the hole must not be 

damaged.

3.

Wipe the exterior of the injector with a clean, 

lint-free cloth. In the case of heavy soiling the 

injector may be cleaned carefully with a 

brass hand brush (not the apertures in the 

injector nozzle!).

4.

Fit the injector. See "Removal and 

installation".

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CE ENGINE FUEL SYSTEM

6-2

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Cleaning

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ΛΦ45/55 series

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