Remove/install steering/fuel system tandem pump

AR46.30-W-0400A

Remove/install steering/fuel system tandem pump

03.07.2017

Model

950, 952, 953, 954 with engine 541.9

Model

950, 952, 954 with engine 542.9

1

Tandem pump

2

O-ring

3

Cross plate

4

Sealing ring

5

Fitting

6

Oil pressure line

7

Sealing ring

8

Thrust ring

9

Nut

10

Elbow fitting

11

Oil suction line

12

Banjo bolt

13

Sealing ring

14

Fuel intake line

15

Fuel pressure line

16

Banjo bolt

17

Screw

 Danger

Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contactwith fuel.

No fires, sparks, open flames or smoking. Pour fuels into suitable and appropriately marked containers only.
Wear protective clothing when handling fuel.

AS47.00-Z-0001-01A

 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

 Warning

Risk of injury caused by body parts being pinched or crushed as cab is tilted

Ensure that no one is within the tilting range of the cab as it is being tilted. Always tilt the cab all the way to the end position and secure with the safety strut.

AS60.80-Z-0001-01A

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

Topical note

Notes on tilting the cab

AH60.80-N-0003-01A

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

AH00.00-P-0015-01CW



Remove

1

Open maintenance flap

2

Tilt cab

3

Remove bottom soundproofing

4

Attach turning device to timing case

 Screw/bolt, engine cranking device to timing case

*BA01.60-N-1009-01B

 Turning device

*904589046300

5

Remove fuel intake line (14) and fuel pressure line (15) from tandem pump (1)

 Catch leaking fuel in a suitable vessel.

6

Remove oil pressure line (6) from tandem pump (1)

 Counterhold the fitting (5).
Collect escaping hydraulic fluid in a suitable container.
Plug openings.

 Plug

*963589019100

7

Remove oil suction line (11) from tandem pump (1)

 Counterhold the elbow fitting (10).
Collect escaping hydraulic fluid in a suitable container.
Plug openings.

 Plug

*963589019100

8

Remove tandem pump (1) from timing case

9

Remove cross coupling (3).

10

Remove O-ring (2)

11

Unscrew fitting (5) from tandem pump (1)

Only if tandem pump (1) or fitting (5) was replaced.

 Seal opening on tandem pump (1).

 Plug

*963589019100

12

Mark assembly position of elbow fitting (10) and unscrew elbow fitting (10) from tandem pump (1)

Only if tandem pump (1) or elbow fitting (10) are replaced.

 Seal opening on tandem pump (1).

 Plug

*963589019100



Install

13

Remove stop plug from tandem pump (1)

Only if the tandem pump (1) or fitting (5) or elbow fitting (10) were replaced.

14

Screw fitting (5) into tandem pump (1)

Only if tandem pump (1) or fitting (5) was replaced.

 Replace sealing ring (4).

 Fitting of oil pressure line to power steering pump

*BA46.30-N-1005-01C

 Tool kit

*000589109900

15

Screw elbow fitting (10) into tandem pump (1)

Only if tandem pump (1) or elbow fitting (10) were replaced.

 Observe assembly position.
Replace sealing ring (7) and thrust ring (8).

 Elbow fitting of oil suction line to power steering pump

*BA46.30-N-1002-01C

 Tool kit

*000589109900

16

Turn engine using turning device until the guide of the cross coupling (3) on the compressor crankshaft is horizontal

 Turning device

*904589046300

17

Place cross coupling (3) onto compressor crankshaft and secure with grease to prevent it from slipping

High-temperature grease

*BR00.45-Z-1051-06A

18

Fit new O-ring (2) onto tandem pump (1)

19

Turn shaft of tandem pump (1) until guide of cross coupling (3) is vertical

20

Attach tandem pump (1) to timing case

 Bolt, tandem pump for steering/fuel system to timing case

*BA46.30-N-1001-01C

21

Remove turning device from timing case and attach TDC inspection hole cap to timing case

 Screw/bolt, cap of TDC inspection hole to timing case

*BA01.60-N-1001-01B

22

Remove all stop plugs

23

Mount oil pressure line (6) onto tandem pump (1)

 Counterhold the fitting (5).

 Oil pressure line to fitting/power steering pump

*BA46.30-N-1006-01C

 Tool kit

*000589109900

24

Mount oil suction line (11) onto tandem pump (1)

 Counterhold the elbow fitting (10).

 Oil suction line to elbow fitting/power steering pump

*BA46.30-N-1003-01C

 Tool kit

*000589109900

25

Mount fuel intake line (14) and fuel pressure line (15) onto tandem pump (1)

 Replace sealing rings (13).

 Banjo bolt, fuel line to fuel pump

*BA47.25-N-1002-01B

26

Bleed fuel system



AP47.00-W-1720-01A

27

Lower cab

Only for vehicles with steering gear 765.887/889/892 or HEMA dual-circuit power steering

28

Bleed steering system

Steering gear 765.889/892

AR46.25-W-3300A

Steering gear 765.887 or HEMA dual-circuit power steering

AR46.25-W-3300B

Steering gear 765.82

AR46.25-W-3300C

 Steering gear 765.894
Work instructions have not been compiled for vehicles equipped with this steering gear.

29

Check tandem pump (1) for leak tightness

 Visual inspection.

30

Install lower noise insulation

 Timing case

Number

Designation

Engine 541.9, 542.9

BA01.60-N-1001-01B

Screw/bolt, cap of TDC inspection hole to timing case

Nm

25

 Timing case

Number

Designation

Engine 541.9, 542.9

BA01.60-N-1009-01B

Screw/bolt, engine cranking device to timing case

Nm

25

 Power steering pump

Number

Designation

Model 930, 932, 933, 934, 950, 952, 953, 954 with engine 541.9, model 930, 932, 934, 950, 952, 954 with engine 542.9

BA46.30-N-1001-01C

Bolt, tandem pump for steering/fuel system to timing case

Nm

60

 Power steering pump

Number

Designation

Model 930, 932, 933, 934, 950, 952, 953, 954 with engine 541.9, model 930, 932, 934, 950, 952, 954 with engine 542.9

BA46.30-N-1002-01C

Elbow fitting of oil suction line to power steering pump

Nm

80

 Power steering pump

Number

Designation

Model 930, 932, 933, 934, 950, 952, 953, 954 with engine 541.9, model 930, 932, 934, 950, 952, 954 with engine 542.9

BA46.30-N-1003-01C

Oil suction line to elbow fitting/power steering pump

Nm

100

 Power steering pump

Number

Designation

Model 930, 932, 933, 934, 950, 952, 953, 954 with engine 541.9, model 930, 932, 934, 950, 952, 954 with engine 542.9

BA46.30-N-1005-01C

Fitting of oil pressure line to power steering pump

Nm

40

 Power steering pump

Number

Designation

Model 930, 932, 933, 934, 950, 952, 953, 954 with engine 541.9, model 930, 932, 934, 950, 952, 954 with engine 542.9

BA46.30-N-1006-01C

Oil pressure line to fitting/power steering pump

Nm

80

 Fuel lines/hoses

Number

Designation

ENGINE 541.9, 542.9

BA47.25-N-1002-01B

Banjo bolt, fuel line to fuel pump

M161.5

Nm

50

Repair materials

Number

Designation

Order number

BR00.45-Z-1051-06A

High-temperature grease

A 000 989 81 51