DAF CF65, CF75, CF85 Series . Manual - part 955

 

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DAF CF65, CF75, CF85 Series . Manual - part 955

 

 

©

 200423

3-13

Inspection and adjustment

STEERING GEAR, GENERAL

ΧΦ65/75/85 series

7

2

3.4 INSPECTION OF STEERING BOX ATTACHMENT.

1.

Engine should be at idling speed.

2.

Pull the steering wheel with quick jerks.

3.

The steering box should not move.

3.5 INSPECTION OF HYDRAULIC CENTRE POSITION

1.

Jack up the front axle(s).

2.

Place the pitman arm in the central position.

3.

Engine speed 1200 - 1400 rpm.

4.

The pitman arm should not move by itself.

STEERING GEAR, GENERAL

3-14

©

 200423

Inspection and adjustment

2

ΧΦ65/75/85 series

7

3.6 CHECKING FASTENING OF UNIVERSAL JOINT TO STEERING BOX INPUT 

SHAFT

1.

Check the universal joint for perceptible play. 

If perceptible play is detected, the affected 

part must be replaced.

2.

Check whether there is any perceptible play 

between the spline connection of the 

universal joint and the steering box input 

shaft. If perceptible play is detected, the 

splines on the universal joint and those on 

the input shaft must be checked for wear. If 

wear is detected, the affected part must be 

replaced.

3.

If there is noticeable play but the parts are 

not worn, the attachment bolt and nut must 

be replaced. Tighten the new locating bolt 

with the new self-locking nut to the specified 

tightening torque, see 'Technical data'.

S7 00 639

©

 200423

4-1

Draining and filling

STEERING GEAR, GENERAL

ΧΦ65/75/85 series

7

2

4. DRAINING AND FILLING

4.1 DRAINING AND FILLING/BLEEDING THE SINGLE CIRCUIT STEERING 

SYSTEM

The steering oil should be drained in case of:

-

damage to the main steering pump or 

emergency steering pump

-

contamination of the steering oil

-

water in the steering oil

-

serious foaming of the steering oil due to 

drawing in of air.

Draining of a single-circuit steering system
1.

Clean the line connections of the steering 

box, reservoir and, if present, the slave 

cylinder.

2.

Jack up the steerable axle(s).

3.

Place receptacles under the steering box 

and, if present, the slave cylinder. Remove 

the return line from the steering box and, if 

present, the slave cylinder lines.

4.

Remove the filter from the reservoir.

5.

With the engine at a standstill turn the 

steering wheel slowly from one end stop to 

the other until the oil stops coming out of the 

line connection(s).

6.

Reconnect the disconnected line(s).

7.

Fit a new filter into the reservoir.

STEERING GEAR, GENERAL

4-2

©

 200423

Draining and filling

2

ΧΦ65/75/85 series

7

Drained steering oil must not be re-

used. Store this hydraulic oil 

separately from the other drained 

oils and have the oil collected by a 

waste-removal company authorised 

to do so.

Make sure that during filling and 

bleeding the reservoir always 

remains filled with oil so as to 

prevent the pump from drawing in air 

which would cause foaming in the 

oil.

Air in the hydraulic system may 

cause serious damage to the 

steering pump. Air in the hydraulic 

system could cause occasional 

"jamming" of the steering gear.

If the hydraulic system contains air, 

a squealing sound will be heard 

when the steering wheel is turned.

In the case of serious foaming, the 

steering oil should be completely 

drained. Trace and repair the leak, 

after which the system can be filled 

again and bled.

Filling/bleeding of a single-circuit steering 
system
1.

The steering gear bleeds automatically. This 

bleeding system will only function if there is 

circulation pressure in the system.

2.

Fill the reservoir to the brim with clean oil 

which complies with the specifications. Wait 

a little while and then fill the reservoir to the 

brim again.

3.

Crank the engine for approx. 2 seconds 

using the starter motor. Make sure that the 

reservoir remains filled. Stop cranking 

immediately if the oil level threatens to 

become too low. Top up the steering oil.

4.

Crank the engine for approx. 10 seconds 

using the starter motor. Make sure that the 

reservoir remains filled. Stop cranking 

immediately if the oil level threatens to 

become too low.

5.

Top up the steering oil to the upper mark on 

the dipstick.

6.

Repeat the actions described in points 4 and 

5 until the steering oil level no longer 

decreases.

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