DAF LF45, LF55 Series. Manual — part 175

©

200505

5-1

Cleaning

BE ENGINE

ΛΦ45/55 series

2

2

5. CLEANING

5.1 CLEANING THE ENGINE

Note:

It is advisable to clean the engine and the

surrounding area with a high-pressure cleaner

before starting maintenance or service

operations. A clean environment makes your

work easier and enables you to notice any engine

defects at an early stage.

Before cleaning the engine, check for any leaks.

If the engine is cleaned with a high-pressure

cleaner, this must be done with care. It is also

important to observe the following points:

-

when cleaning the universal joint on the

steering box, the spider seals may be forced

open by the high-pressure jet of water, so

that the grease behind them is flushed away.

As a result, the spider may get stuck, so that

the steering mechanism will jam.

-

there is a bleed vent on the power steering

fluid reservoir of the steering gear. Water

may enter the reservoir through this bleed

vent, causing damage to the steering gear.

-

when cleaning the radiator/intercooler

element, be careful not to damage the fins.

-

do not direct the high-pressure cleaner jet

too long at the air-conditioning system

condenser. As a result of the high

temperature, the pressure in the system will

become excessive, which may cause

damage to the system.

-

ensure that no water can enter the gearbox

via the bleed vents.

-

make sure that no water can enter via the

clutch reservoir bleed vents.

-

the engine compartment can be cleaned with

a high-pressure cleaner. Never direct the jet

of water towards electrical components.

-

do not aim the high-pressure cleaner jet at

electrical components and electrical

connections such as the electronic unit,

sensors, connectors and vehicle lighting

through-connections, etc.

-

ensure that no water can enter the air inlet

system via the air inlet or its flexible seals.

BE ENGINE

5-2

©

200505

Cleaning

2

ΛΦ45/55 series

2

©

200505

1

Contents

BE ENGINE COOLING SYSTEM

ΛΦ45/55 series

2

3

3 BE engine cooling system

CONTENTS

Page

Date

1.

SAFETY INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 . . . . . 200505
1.1

Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 . . . . . 200505

2.

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 . . . . . 200505
2.1

System description, cooling system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 . . . . . 200505

3.

DESCRIPTION OF COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 . . . . . 200505
3.1

Pressure cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 . . . . . 200505

3.2

Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 . . . . . 200505

3.3

Viscous fan clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 . . . . . 200505

4.

CHECKING AND ADJUSTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 . . . . . 200505
4.1

Pressure-testing cooling system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 . . . . . 200505

4.2

Inspecting the thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 . . . . . 200505

4.3

Inspection, viscous fan clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3 . . . . . 200505

5.

REMOVING AND INSTALLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 . . . . . 200505
5.1

Removal and installation, coolant pump . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 . . . . . 200505

5.2

Removal and installation, thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 . . . . . 200505

5.3

Removal and installation, viscous fan clutch . . . . . . . . . . . . . . . . . . . . . . . 5-3 . . . . . 200505

5.4

Removal and installation, radiator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4 . . . . . 200505

6.

DRAINING AND FILLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 . . . . . 200505
6.1

Draining, filling and bleeding the cooling system. . . . . . . . . . . . . . . . . . . . 6-1 . . . . . 200505

7.

CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 . . . . . 200505
7.1

Cleaning the exterior of radiator and air cooler . . . . . . . . . . . . . . . . . . . . . 7-1 . . . . . 200505

7.2

Flushing cooling system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3 . . . . . 200505

BE ENGINE COOLING SYSTEM

2

©

200505

Contents

3

ΛΦ45/55 series

2