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.