DAF CF65, CF75, CF85 Series . Manual - part 1127

 

  Index      DAF     DAF CF65, CF75, CF85 Series - service repair manual

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  1125  1126  1127  1128   ..

 

 

DAF CF65, CF75, CF85 Series . Manual - part 1127

 

 

©

 200518

3-17

Inspection and adjustment

EXPLANATORY NOTES ON THE MAINTENANCE ACTIVITIES

ΧΦ65/65 (II) series

5

3.20 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

3-18

©

 200518

Inspection and adjustment

5

ΧΦ65/65 (II) series

3.21 INSPECTING THE COMPRESSOR LINE

Remain at a safe distance from 

rotating and/or moving components.

Note:

If excessive values are measured, the inside of 

the air-dryer housing and the silencer on the vent 

should first be cleaned. Then repeat the 

inspection.

1.

Bring the engine up to operating 

temperature.

2.

Build up pressure in the brake system 

(pressure regulator must cut out).

3.

When the engine is not running, remove the 

safety valve from the compressor line and 

replace it with a test nipple.

4.

Connect a pressure gauge (measuring range 

0-16 bar) to the test nipple.

5.

Start the engine and run it at maximum 

engine speed.

6.

If the pressure regulator has switched off 

(cut-off pressure reached, air dryer blown 

off) the pressure gauge must show a 

pressure lower than 2 bar; if the measured 

pressure is higher than the specified reading, 

the compressor line must be replaced.

Note:

If the pressure measured is too high, this 

indicates that there are excessive carbon 

deposits in the compressor line. The cause 

could be poor condition of the compressor 

(oil consumption).

7.

Run the engine at idling speed.

8.

Bleed the brake system until the cut-in 

pressure of the pressure regulator has been 

reached and switch off the engine. The 

indicator on the pressure gauge should not 

drop rapidly. If necessary, check the system 

for leaks. Pay special attention to the 

compressor line and the compressor.

9.

Fit the safety valve.

}

©

 200518

3-19

Inspection and adjustment

EXPLANATORY NOTES ON THE MAINTENANCE ACTIVITIES

ΧΦ65/65 (II) series

5

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.

EXPLANATORY NOTES ON THE MAINTENANCE ACTIVITIES

3-20

©

 200518

Inspection and adjustment

5

ΧΦ65/65 (II) series

3.24 CHECKING THE BRAKE SHOE THICKNESS AND BRAKE DISC

Version: Knorr SB 7000
1.

Check whether guide bush (4) protrudes 

from guide sleeve (6) (C).

If the guide bush (4) is level with the guide 

sleeve (6) (see detail A) the brake shoe and 

brake disc thicknesses should be checked.

C

1

4

6

R600481

A

 

 

 

 

 

 

 

Content   ..  1125  1126  1127  1128   ..