DAF LF45, LF55 Series. Manual - part 650

©

 200515

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Inspection and adjustment

EXPLANATORY NOTES ON THE MAINTENANCE ACTIVITIES

ΛΦ45/55 series

5

3.36 CHECKING AUTOMATIC GEARBOX OIL LEVEL

Checking cold oil level
1.

Place the vehicle on a flat and level surface.

2.

Make sure that the gearbox is in neutral and 

allow the engine to run for several minutes.

3.

Apply the service brake, switch the gearbox 

to D, then to N and finally switch the gearbox 

to R. The purpose of this is to fill the hydraulic 

system.

4.

Switch the gearbox to the parking position 

and release the service brake.

5.

Remove the dipstick when the engine is 

idling and wipe it clean with a lint-free cloth.

Note:

To take the dipstick out of the holder, the 

sealing cap must be held while the dipstick is 

turned anti-clockwise.

6.

Put the dipstick back.

7.

Remove the dipstick and check the oil level. 

The oil level should be between the "Cold 

add" and "Cold full" marks.

8.

Clean the dipstick with a lint-free cloth and 

put it back.

9.

Remove the dipstick and check the oil level 

again.

10. Oil needs to be added when the oil level is 

below the "Cold add" mark.

11. Check the oil level in the gearbox at 

operating temperature.

HOT 

FULL

COLD

FULL

HOT

ADD

COLD

ADD

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EXPLANATORY NOTES ON THE MAINTENANCE ACTIVITIES

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©

 200515

Inspection and adjustment

5

ΛΦ45/55 series

Checking hot oil level
1.

Bring the gearbox up to operating 

temperature (approx. 71

C - 93C).

2.

Remove the dipstick when the engine is 

idling and wipe it clean with a lint-free cloth.

Note:

To take the dipstick out of the holder, the 

sealing cap must be held while the dipstick is 

turned anti-clockwise.

3.

Put the dipstick back.

4.

Remove the dipstick and check the oil level.

5.

The oil level should be between the "Hot 

add" and "Hot full" marks.

6.

Clean the dipstick with a lint-free cloth and 

put it back.

7.

Remove the dipstick and check the oil level 

again.

8.

Oil needs to be added when the oil level is 

below the "Hot add" mark.

9.

Oil needs to be drained when the oil level is 

above the "Hot full" mark.

Note:

The oil level must be checked at least twice. 

When there are differences between the 

measurements, check the bleeder for 

clogging.

HOT 

FULL

COLD

FULL

HOT

ADD

COLD

ADD

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 200515

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Inspection and adjustment

EXPLANATORY NOTES ON THE MAINTENANCE ACTIVITIES

ΛΦ45/55 series

5

3.37 INSPECTION OF OIL LUBRICATED WHEEL HUBS FOR LEAKS

1.

Check the wheel hubs for leaks.

Note:

If leaks occur in the oil lubricated wheel hubs, 

the wheel hub should be refilled to the 

correct level - once the leak has been 

repaired, see chapter: "Draining and filling".

EXPLANATORY NOTES ON THE MAINTENANCE ACTIVITIES

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©

 200515

Inspection and adjustment

5

ΛΦ45/55 series

3.38 CHECKING GREASED WHEEL HUBS FOR LEAKS

1.

Check the wheel hubs for leaks.

Note:

For maintenance-free wheel hubs:

If there are serious grease marks on the 

brake disc side of the wheel hub, this could 

indicate excessive use of assembly grease 

on new or recently assembled wheel hubs.

On wheel hubs that were not assembled 

recently, serious grease marks could 

indicate a leak in the seal.

Checking greased wheel hubs for leaks, 
1132 axle
1.

Check the wheel hubs for leaks.

Note:

If there are serious grease marks on the 

brake disc side of the wheel hub, this could 

indicate excessive use of assembly grease 

on new or recently assembled wheel hubs.

On wheel hubs that have not been 

assembled recently, serious grease marks 

could indicate a leak in the seal (1). This 

means that the entire hub unit must be 

replaced.

Serious oil leakage on the driven rear axle 

hubs could indicate that the O-ring (2) is not 

sealing correctly.

If there is an oil leak the hub unit should be 

dismantled to remedy the problem.