DAF LF45, LF55 Series. Manual — part 268

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200508

3-3

Description of components

CLUTCH

ΛΦ45/55 series

3

9

3.2 WEAR INDICATOR

An indicator (1) is mounted on the push rod of the

clutch servo. The end of the indicator can be seen

in the groove of the indicator cover (2).

As the clutch plate wears, the indicator (1) will

move towards the end mark (3). When the

indicator (1) reaches the end mark (3), it may be

assumed that the clutch plate is due to be

replaced.

Automatically adjusting clutch release
assembly

Check that the wear indicator (2) on the clutch

servo is directly opposite the mark (1) on the

cover.

If the wear indicator is no longer level with the

mark on the clutch servo, replace the clutch plate.

V3 00 381

1

2

3

V3 00 375

1

2

CLUTCH

3-4

©

200508

Description of components

9

ΛΦ45/55 series

3

3.3 THRUST BEARING

The thrust bearing is of the pressed type and is

maintenance-free.

When mounting the thrust bearing, do not use

any grease. The gearbox front cover must be

thoroughly cleaned before the thrust bearing is

mounted.

The grease will attack the plastic coating and

shorten the service life of the thrust bearing.

LF 45 thrust bearing with ZF S5-42 gearbox

Thrust bearing, other LF versions

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V3 00 387

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V3 00 388

©

200508

4-1

Inspection and adjustment

CLUTCH

ΛΦ45/55 series

3

9

4. INSPECTION AND ADJUSTMENT

4.1 INSPECTING CLUTCH SERVO

Hydraulic fluid is toxic and can

therefore have a damaging effect on

your health. Any direct or indirect

physical contact should therefore be

avoided. As hydraulic fluid is also

corrosive it may damage the

paintwork of the vehicle. Any

contact between hydraulic fluid and

paintwork should therefore be

avoided.

Always use new and clean hydraulic

fluid which has been kept in a sealed

container that meets the

specifications. Hydraulic fluid which

has absorbed water (from the

ambient air) may have an adverse

effect on the operation of the clutch

system. Avoid any contact with

mineral oil. Even one drop of mineral

oil in the system will damage the

seals.

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CLUTCH

4-2

©

200508

Inspection and adjustment

9

ΛΦ45/55 series

3

1.

Pressurise the air system.

2.

Check for any air leakage via the clutch

servo bleed vent.

3.

Depress the clutch pedal and check whether

there is any leakage via the clutch servo

bleed vent.

3

2

7

1

10

8

9

A-A

4

5

6

A

V300352-2

A