Remove/install emergency steering pump

AR46.30-W-0501A

Remove/install emergency steering pump

04.07.2017

Model

930.3, 932.3, 933.3, 942.3, 943.3, 950.3, 952.3, 953.3 with steering gear 765.887

Mercedes-Benz/ThyssenKrupp steering

Model

930.3, 932.3, 933.3, 942.3, 943.3, 950.3, 952.3, 953.3

HEMA dual-circuit power steering

1

Emergency steering pump

3

Oil suction line

5

Oil pressure line

2

Banjo bolt

4

Union nut

6

Clip

1

Emergency steering pump

8

Gear

10

Connecting flange

12

Fitting

13

Sealing ring

 Warning

Risk of injury to skin or eyes from hydraulic fluid spraying out under pressure.Risk of poisoning from swallowing hydraulic fluid.

Depressurize hydraulic system completely before starting any work on it. Wear protective clothing and safety glasses.

AS00.00-Z-0013-01A

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Topical note

Notes on maintenance and repair work

AH46.20-N-0001-01H

Note on calculation of tightening torque when using insertion or socket tools with various effective lengths

AH00.00-P-0015-01CW

 

Remove/install

1

Detach clamp (6) from oil pressure line (5)

2

Remove banjo bolt (2) and secure oil suction line (3) at side

 Collect escaping oil in a suitable container.
Plug openings.

 Installation: Install new seals.

 Steering gear 765.887Banjo bolt, oil suction line fitting to emergency steering pump

*BA46.30-N-1006-02A

 HEMA dual-circuit power steeringBanjo bolt, oil suction line fitting to emergency steering pump

*BA46.30-N-1006-02JD

 Plug

*963589019100

3

Unscrew union nut (4)

 Counterhold fitting (12).

 Steering gear 765.887Union nut, oil pressure line to emergency steering pump fitting

*BA46.30-N-1005-02A

 HEMA dual-circuit power steeringUnion nut, oil pressure line to emergency steering pump fitting

*BA46.30-N-1005-02JD

4

Detach oil pressure line (5) from emergency steering pump (1) and secure at side

 Collect escaping oil in a suitable container.
Plug openings.

 Plug

*963589019100

5

Remove emergency steering pump (1) together with connecting flange (10)

 Collect escaping transmission oil in a suitable container.

 Installation: Replace the sealing ring (13).

 Steering gear 765.887Bolt, connecting flange to transmission

*BA46.30-N-1001-02A

 HEMA dual-circuit power steeringBolt, connecting flange to transmission

*BA46.30-N-1001-02JD

6

Attach fitting (12)

Only when replacing the emergency steering pump (1).

 Steering gear 765.887Oil pressure line fitting to emergency steering pump

*BA46.30-N-1004-02A

 HEMA dual-circuit power steeringOil pressure line fitting to emergency steering pump

*BA46.30-N-1004-02JD

7

Detach gear (8) and connecting flange (10) from emergency steering pump (1)

Only when replacing the gear (8), connecting flange (10) or emergency steering pump (1).

AR46.30-W-0501-01A

Loctite 573

*BR00.45-Z-1006-01A

 Steering gear 765.887Nut, gear to emergency steering pump

*BA46.30-N-1003-02A

 HEMA dual-circuit power steeringNut, gear to emergency steering pump

*BA46.30-N-1003-02JD

 Steering gear 765.887Bolt, connecting flange to emergency steering pump

*BA46.30-N-1002-02A

 HEMA dual-circuit power steeringBolt, connecting flange to emergency steering pump

*BA46.30-N-1002-02JD

8

Install in the reverse order

9

Check oil level in transmission; correct if necessary

AR26.00-W-0100A

10

Bleed steering system

AR46.25-W-3300B

11

Check emergency steering pump (1) for leaktightness at lines

 Visual inspection.

12

Perform a test drive

 During the road test check the overall steering behavior of the vehicle.

 Emergency steering pump

Number

Designation

Steering gear 765.887

BA46.30-N-1001-02A

Bolt, connecting flange to transmission

Nm

50

 Emergency steering pump

Number

Designation

HEMA dual-circuit power steering

BA46.30-N-1001-02JD

Bolt, connecting flange to transmission

Nm

50

 Emergency steering pump

Number

Designation

Steering gear 765.887

BA46.30-N-1002-02A

Bolt, connecting flange to emergency steering pump

Nm

50

 Emergency steering pump

Number

Designation

HEMA dual-circuit power steering

BA46.30-N-1002-02JD

Bolt, connecting flange to emergency steering pump

Nm

50

 Emergency steering pump

Number

Designation

Steering gear 765.887

BA46.30-N-1003-02A

Nut, gear to emergency steering pump

Nm

60

 Emergency steering pump

Number

Designation

HEMA dual-circuit power steering

BA46.30-N-1003-02JD

Nut, gear to emergency steering pump

Nm

60

 Emergency steering pump

Number

Designation

Steering gear 765.887

BA46.30-N-1004-02A

Oil pressure line fitting to emergency steering pump

Nm

50

 Emergency steering pump

Number

Designation

HEMA dual-circuit power steering

BA46.30-N-1004-02JD

Oil pressure line fitting to emergency steering pump

Nm

50

 Emergency steering pump

Number

Designation

Steering gear 765.887

BA46.30-N-1005-02A

Union nut, oil pressure line to emergency steering pump fitting

Nm

50

 Emergency steering pump

Number

Designation

HEMA dual-circuit power steering

BA46.30-N-1005-02JD

Union nut, oil pressure line to emergency steering pump fitting

Nm

50

 Emergency steering pump

Number

Designation

Steering gear 765.887

BA46.30-N-1006-02A

Banjo bolt, oil suction line fitting to emergency steering pump

Nm

60

 Emergency steering pump

Number

Designation

HEMA dual-circuit power steering

BA46.30-N-1006-02JD

Banjo bolt, oil suction line fitting to emergency steering pump

Nm

60

Repair materials

Number

Designation

Order number

BR00.45-Z-1006-01A

Loctite 573

A 004 989 72 20