DAF LF45, LF55 Series. Manual — part 256

©

200508

2-1

Description of components

ALLISON 1000 & 2000 AUTOMATIC GEARBOXES

ΛΦ45/55 series

3

7

2. DESCRIPTION OF COMPONENTS

2.1 SELECTOR LEVER

The various gears of the automatic gearbox are

selected using the selector lever. The selector

lever has four positions for the forward gears

(1, 2, 3 and D), a neutral position (N) and a

reverse position (R).

The neutral position (N) is the usual position for

starting and stopping the engine and for longer

stationary periods when the engine is idling. The

gearbox must not be put in the neutral position

when driving.

In the drive position (D) the gearbox automatically

changes up and down in all forward gears.

In positions (1), (2) and (3) the gearbox changes

up as far as the selected gear. These positions

can be used to keep the engine in the correct rev

band or to obtain maximum engine brake

performance.

To reverse, the selector lever must be in the (R)

position. A warning signal is also activated when

reversing.

V3 00 593

ALLISON 1000 & 2000 AUTOMATIC GEARBOXES

2-2

©

200508

Description of components

7

ΛΦ45/55 series

3

2.2 SELECTOR SWITCH

The selector switch is mounted on the gearbox

housing. The selector switch communicates the

selector shaft angular displacement to the ECU.

Before the vehicle can be started, the electronic

unit must receive a signal from the selector switch

confirming that the automatic gearbox is in

neutral.

V3 00 557

©

200508

3-1

Inspection and adjustment

ALLISON 1000 & 2000 AUTOMATIC GEARBOXES

ΛΦ45/55 series

3

7

3. INSPECTION AND ADJUSTMENT

3.1 CHECKING OIL LEVEL

Checking cold oil level
1.

Place the vehicle on a flat and level surface

and apply the parking brake.

2.

Make sure the gearbox is in neutral and allow

the engine to idle 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 neutral 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

W 3 03 099

ALLISON 1000 & 2000 AUTOMATIC GEARBOXES

3-2

©

200508

Inspection and adjustment

7

ΛΦ45/55 series

3

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.

Remove the dipstick and check the oil level.

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

W 3 03 099