Remove/install fuel pump and fill level sensor

AR47.20-D-7000SD

Remove/install fuel pump and fill level sensor

09.12.2014

ENGINE

642, 646, 651 in MODEL 906

ENGINE

651 in MODEL 900

Modification notes

02.12.2014

Perform initialization of the fuel pump with fill level sensor (M3/5), added.

Operation step 14

Shown on vehicle without code XM0 (Facelift) with auxiliary heater

1

Fuel tank

2

Electrical connection

3

Fuel return line

4

Fuel feed line

5

Auxiliary heater fuel line

6

Union nut

M3/5

Fuel pump with fill level sensor

Shown on vehicle without code XM0 (Facelift)

1

Fuel tank

8

Marking

M3/5

Fuel pump with fill level sensor

6

Union nut

9

Marking

7

Marking

10

Marking

 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



Remove

1

Remove fuel tank (1)

AR47.10-D-4100SD

2

Disconnect electrical connection (2) on fuel pump with fill level sensor (M3/5)

3

Unlock fuel feed line (4) and fuel return line (3) on fuel pump with fill level sensor (M3/5) and detach

4

Unlock auxiliary heater (5) fuel line on fuel pump with fill level sensor (M3/5) and detach

ENGINE 642, 646, 651 in MODEL 906
with CODE H12 (Auxiliary hot-water heater)
ENGINE 651 in MODEL 900
with CODE H12 (Auxiliary hot-water heater)

5

Unscrew union nut (6) on fuel tank (1)

 Hook wrench

*639589000700

6

Remove fuel pump with fill level sensor (M3/5) from the fuel tank (1)

 Catch fuel with rag.



Install

7

Insert fuel pump with fill level sensor (M3/5) into fuel tank (1)

 Replace sealing ring.
Make sure that the sealing ring is seated correctly.

8

Place union nut (6) on fuel tank (1) in such a way that the marking (10) stands opposite marking (9)

 Replace union nut (6).

9

Continue to turn union nut (6) using torque wrench from this position by about 1.5 revolutions until marking (10) stands between markings (7, 8)

 The checking torque must reach between markings (7, 8).

 Union nut, fuel level sensor to fuel tank

*BA47.10-N-1001-01E

 Hook wrench

*639589000700

10

Place auxiliary heater (5) fuel line on fuel pump with fill level sensor (M3/5) and lock

ENGINE 642, 646, 651 in MODEL 906
with CODE H12 (Auxiliary hot-water heater)
ENGINE 651 in MODEL 900
with CODE H12 (Auxiliary hot-water heater)

11

Place fuel feed line (4) and fuel return line (3) on fuel pump with fill level sensor (M3/5) and lock in position

12

Contact electrical connection (2) on fuel pump with fill level sensor (M3/5)

13

Install fuel tank (1)

AR47.10-D-4100SD

14

Connect diagnostic system, clear fault memory and perform initialization of the fuel pump with fill level sensor (M3/5) with diagnostic system

For renewal of the fuel pump with fill level sensor (M3/5)



AD00.00-D-2000-04SD

 Fuel tank

Number

Designation

MODEL 900 with ENGINE 651

MODEL 906 with ENGINE 642, 646, 651

BA47.10-N-1001-01E

Union nut, fuel level sensor to fuel tank

Tightening

°

545

545

Control torque

Nm

>60

>60