DAF CF65, CF75, CF85 Series . Manual - part 972

 

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DAF CF65, CF75, CF85 Series . Manual - part 972

 

 

©

 200423

3-3

Removal and installation

STEERING PUMP

ΧΦ65/75/85 series

7

4

3.2 REMOVAL AND INSTALLATION, STEERING PUMP LUK VT72A

Removing the LUK VT72A steering pump

Note:

When replacing a worn steering pump, you are 

advised to drain the steering oil fully, dismantle 

the steering oil reservoir and clean it thoroughly, 

and to replace the filter.

In extreme situations, the steering pump may 

have been worn to such an extent that metal 

pump parts have entered the steering box. Check 

the EMAS system for correct operation.

1.

Clean the pipe connections.

2.

Place a receptacle underneath the steering 

pump.

3.

Remove the pipes from the steering pump 

and plug the pipe and pump openings.

The steering oil filter is fitted in the return 

pipe, which means that should any dirt enter, 

it will immediately also enter the steering 

gear.

4.

Remove the attachment bolts (2) and take 

the steering pump (1) out of the bearing 

housing (3).

Installing the LUK VT72A steering pump
1.

Thoroughly remove any preserving grease, 

especially from the prop shaft.

2.

If necessary, connect the pipe couplings to 

the steering pump to be fitted. Tighten the 

couplings to the specified torques, see 

'Technical data'.

If the specified tightening torques 

are exceeded, the aluminium pump 

housing may be damaged.

3.

Check the drive key for damage.

4.

Fit the key into the prop shaft.

5.

Fit the pump (1) to the bearing housing (3).

6.

Insert the attachment bolts (2). Tighten the 

attachment bolts evenly to the specified 

tightening torque, see 'Technical data'.

7.

Fit the pipes.

8.

Fill and bleed the EMAS system.

9.

Check the operation of the EMAS system 

and for leaks of the pipe connections.

1

2

3

S7 00 858

}

STEERING PUMP

3-4

©

 200423

Removal and installation

4

ΧΦ65/75/85 series

7

3.3 REMOVAL AND INSTALLATION, STEERING PUMP ZF 7685

Removing the ZF 7685 steering pump

Note:

When replacing a worn steering pump, you are 

advised to drain the steering oil fully, dismantle 

the steering oil reservoir and clean it thoroughly, 

and to replace the filter.

In extreme situations, the steering pump may 

have been worn to such an extent that metal 

pump parts have entered the steering box. Check 

the steering box for internal wear using the test 

equipment case.

1.

Clean the pipe connections.

2.

Place a receptacle underneath the steering 

pump.

3.

Remove the pipes from the steering pump 

and plug the pipe and pump openings.

The steering oil filter is fitted in the return 

pipe, which means that should any dirt enter, 

it will immediately also enter the steering 

gear.

4.

Remove the attachment bolts. Remove the 

steering pump (1) and the driver (3) from the 

compressor.

Installing the ZF 7685 steering pump
1.

Check the driver (3) for wear.

2.

If necessary, connect the pipe couplings to 

the steering pump to be fitted. Tighten the 

couplings to the specified torques, see 

'Technical data'.

If the specified tightening torques 

are exceeded, the aluminium pump 

housing may be damaged.

3.

Fit a new O-ring (2) to the steering pump and 

grease it lightly.

4.

Crank the engine until the compressor driver 

half is horizontal.

5.

Grease the driver (3) lightly and fit it to the 

compressor driver half.

6.

Fit the pump (1). Tighten the attachment 

bolts evenly to the specified tightening 

torque, see 'Technical data'.

7.

Fit the pipes.

8.

Fill and bleed the steering gear hydraulic 

system.

9.

Take a test drive and check the pipe 

connections for leaks.

1

2

3

S7 00 586

}

©

 200423

3-5

Removal and installation

STEERING PUMP

ΧΦ65/75/85 series

7

4

3.4 REMOVAL AND INSTALLATION, EMERGENCY STEERING PUMP

Removing the emergency steering pump

Note:

When replacing a worn steering pump you are 

advised to fully drain the steering oil, disassemble 

the steering oil reservoirs and clean them 

thoroughly and to replace the filter.

In extreme situations, the steering pump may 

have been worn to such an extent that metal 

pump parts have entered the steering box. Check 

the steering box for internal wear using the test 

case.

1.

Clean the line connections.

2.

Place a receptacle under the pump (2).

3.

Remove the lines (3) and (4) from the 

pump (2). Then plug the line and pump 

openings.

The steering oil filter is fitted in the return line, 

which means that should any dirt enter, it will 

immediately also enter the steering gear.

4.

Remove the attachment bolts (1) and 

remove the pump (2) from the gearbox.

Installation of emergency steering pump
1.

Transfer the drive sprocket to the steering 

pump to be installed, if necessary.

Thoroughly remove any preserving grease, 

especially from the tapered parts.

Apply locking compound to the attachment 

nut and tighten them to the specified torque. 

See 'Technical data'.

2.

Replace the O-ring at the drive side of the 

pump.

3.

Fill the pump (2) with clean steering oil 

through the line connection of the supply 

line (4) before installing it.

4.

Install the pump (2) on the gearbox. Fit the 

supply line (4) and secure it so that the pump 

does not empty.

2

3

4

1

S7 00 721

STEERING PUMP

3-6

©

 200423

Removal and installation

4

ΧΦ65/75/85 series

7

5.

Apply locking compound to the attachment 

bolts (1) and tighten these bolts (1) to the 

specified tightening torque, see 'Technical 

data'.

6.

Fit the delivery line (3). Tighten the lines (3) 

and (4).

7.

Fill and bleed the system.

8.

Take a test drive and check whether circuit 2 

functions properly.

9.

After the test drive check the pump and line 

connections for leaks.

Check the steering oil level in the reservoirs.

 

 

 

 

 

 

 

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