DAF LF45, LF55 Series. Manual - part 646

©

 200515

3-13

Inspection and adjustment

EXPLANATORY NOTES ON THE MAINTENANCE ACTIVITIES

ΛΦ45/55 series

5

3.19 CHECKING THE STEERING BALL JOINTS

Checking axial steering ball joint play
1.

Check the axial steering-ball joint play using 

special tool (DAF no. 1329426)

2.

First jack up the axle until the wheels come 

off the ground and put the axle on stands.

3.

Make sure that the castle nut split pin (if 

fitted) at the nut does not come into contact 

with the head of the threaded end.

4.

Screw the thrust washer (8) on to the 

threaded spindle.

5.

Fit the spring retainer (3), spring (4) and 

pressure sleeve (6) into bracket (1). Fit the 

locking screw (5). It should be possible to 

move the pressure sleeve (6) freely.

Note:

Fit the correct pressure sleeve (6).

The pressure sleeve (6) must abut the outer 

edge of the steering ball joint (7).

6.

Loosen thrust bolt (2) until the pressure 

sleeve (6) with the flange abuts the bracket 

(A = 0 mm).

7.

Fit the special tool over the steering ball joint 

(7) and turn the threaded spindle (9) by hand 

until the special tool is tight around the 

steering ball joint (7).

8.

Tighten thrust bolt (2) until its head abuts 

bracket (1).

9.

Measure play "A" between the pressure 

sleeve and the bracket using a feeler gauge. 

Compare the reading with the maximum 

permissible steering ball joint play, see 

"Technical data". 

If necessary, replace the steering ball joint.

9

8

7

6

5

4

3

2

A

1

S700426

EXPLANATORY NOTES ON THE MAINTENANCE ACTIVITIES

3-14

©

 200515

Inspection and adjustment

5

ΛΦ45/55 series

3.20 CHECKING THE STEERING OIL LEVEL

1.

Check the steering oil level when the engine 

is not running.

2.

Tilt the cab.

3.

Clean the dipstick and its surroundings so 

that absolutely no dirt can get into the 

reservoir.

4.

Check the fluid level in the reservoir using 

the dipstick.

5.

The fluid level should be between the marks 

when the steering oil is "cold".

Note:

When the steering oil is at operating 

temperature, the level may be above the top 

mark.

G0 00 214

©

 200515

3-15

Inspection and adjustment

EXPLANATORY NOTES ON THE MAINTENANCE ACTIVITIES

ΛΦ45/55 series

5

3.21 CHECKING THE STEERING GEAR LINES AND CONNECTIONS

1.

Condition of the pipes

-

Check all pipes for tightness and wear. 

Where supply pipes are subject to 

negative pressure, it is particularly likely 

that porous pipes will give rise to 

problems (air in the system).

-

If in doubt, always replace the line. 

2.

Pipe connections

-

Check every pipe connection for leaks.

3.

Line route

-

Pipes must not be twisted during 

assembly. To facilitate checking this, 

a mark may have been provided on the 

hose (sometimes in the form of text).

-

Pipes should not touch other parts (to 

prevent chafing).

-

The course pipes follow should not 

include any sharp bends; this applies 

especially to the flexible suction and 

return pipes.

-

Pipes should not be pinched off by other 

components.

EXPLANATORY NOTES ON THE MAINTENANCE ACTIVITIES

3-16

©

 200515

Inspection and adjustment

5

ΛΦ45/55 series

3.22 CHECKING THE BRAKE COMPONENTS AND BRAKE SYSTEM FOR LEAKS

1.

While operating the service brake, check 

whether any leaks occur in the brake system.

If the brake system of a vehicle has been 

charged to the maximum pressure, it should 

generally be possible to drive the vehicle 

after a period of 16 hours of uninterrupted 

standstill, without having to first charge the 

brake system to adequate operating 

pressure. This implies a maximum pressure 

drop of approx. 0.4 bar per hour at normal 

system pressure. 

Note:

Always connect auxiliary consumers and 

accessories to circuit 4.

3.23 CHECKING THE BRAKE CYLINDER FASTENING

1.

Check that the brake cylinders do not move 

during operation of the service brake.