Replace fuel filter

AP47.20-P-0780O

Replace fuel filter

10.10.2019

Engine

654, 656 in model 167

Shown on engine 654 in model 167.119

2

Heat shield

5

Screw plug

3

Bolts

8

Fuel line

4

Fuel filter housing cover

Shown on fuel filter (7) with pull-off device

6

Fuel filter housing

10

Locked position "Closed"

7

Fuel filter

11

Locked position "Open"

9

Pulling device

Shown on engine 654 in model 167.119

4

Fuel filter housing cover

6

Fuel filter housing

5

Screw plug

7

Fuel filter

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

 Danger

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.

AS00.00-Z-0010-01A

 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

Preparatory activity

1

Switch electronic ignition lock control unit to position "0" and store transmitter key outside transmission range (at least 2 m).

2

Open and close fuel filler cap.

 To reduce the pressure in the fuel tank.

3

Lift vehicle with lifting platform.



AR00.60-P-1006A



Remove

4

Remove screw/bolts (3).

5

Remove heat shield (2).

6

Release and disconnect fuel line (8) and seal with stop plugs provided.


Collect escaping fuel using a suitable receptacle.
Damage can otherwise occur.

7

Remove and dispose of screw plug (5), and drain fuel filter housing (6).


Collect escaping fuel using a suitable receptacle.
Damage can otherwise occur.



Install

8

Screw in new screw plug (5) with new seal.

 Screw plug for water outlet at fuel filter housing

*BA47.20-P-1003-02F



Remove

9

Unscrew fuel filter housing cover (4).


Collect escaping fuel using a suitable receptacle.
Damage can otherwise occur.

 Socket wrench bit

*642589000900

Replace

10

Mount pull-off device (9) onto old fuel filter (7).

 The pull-off device (9) is included with the new fuel filter (7).

11

Turn pull-off device (9) to "Open" lock position (11) and detach old fuel filter (7) from fuel filter housing (6).

12

Dispose of old fuel filter (7) with pull-off device (9).

13

Install new seals.


Replace all sealing rings included in the scope of supply.
Damage can otherwise occur.

14

Attach new fuel filter (7) to fuel filter housing (6) and turn to "Closed" lock position (10).


Make sure that the new fuel filter (7) is locked correctly.
Damage can otherwise occur.



Install

15

Tighten fuel filter housing cover (4).

 Threaded cap at fuel filter housing

*BA47.20-P-1004-02F

 Socket wrench bit

*642589000900

16

Remove stop plugs from fuel line (8) and attach fuel line (8) to fuel filter housing (6) and lock.


Check fuel line (8) is securely locked.
Damage can otherwise occur.

17

Position heat shield (2).

18

Tighten bolts (3).

19

Lower vehicle with vehicle lift.



AR00.60-P-1006A



Check

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

 Warning

Risk of burn injuries, suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning caused by skin contact with solid components of the exhaust.

Wear protective clothing and safety glasses. Use the extraction system. Move people out of the hazard area.

AS49.00-Z-0001-01A

20

Start engine and check for leak tightness on fuel system.


Before the engine is started, the electronic ignition lock control unit must be switched to position "2" (tml.15) for 5 s to fill the new fuel filter (7) with fuel.
Otherwise, the fuel injection system may be damaged.

 The components of the fuel system that were worked on when changing the fuel filter are to be checked for leak tightness.

If a leak occurs,



switch electronic ignition lock control unit immediately to position "0", clean up any leaked fuel, determine and rectify cause, then perform operation step 20 again.

21

Switch off engine.

Finishing activity

22

Lower vehicle with vehicle lift.

If vehicle was not fully lowered beforehand.



AR00.60-P-1006A

 Fuel filter

Number

Designation

Engine 654

Engine 656

BA47.20-P-1003-02F

Screw plug for water outlet at fuel filter housing

Nm

2

2

 Fuel filter

Number

Designation

Engine 654

Engine 656

BA47.20-P-1004-02F

Threaded cap at fuel filter housing

Nm

25

25