Replace fuel filter

AP47.20-P-0780GI

Replace fuel filter

29.06.2016

Engine

607, 651 in model 117, 156, 176, 246

Shown: Model 176.011 with engine 607

1

Fuel filter

2

Electrical connectors

3

Condensation sensor for fuel filter with heating element

4

Bolts

5

Bracket

6

CLIC clamps

7

Fuel hoses

 Danger !

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 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



Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

Preparatory activity

1

Switch electronic ignition lock control unit to position "0"

3

Open and close tank cap

 in order to reduce the pressure in the fuel tank.



Remove

4

Remove engine cover

Vehicle with engine cover.

5.1

Release and disconnect electrical connection (2) at fuel pressure sensor and fuel filter condensation sensor with heating element (3)

Vehicle with fuel filter condensation sensor with heating element (3).

5.2

Release and disconnect electrical connection (2) at fuel pressure sensor and fuel preheating heating element

Vehicle with fuel preheating heating element.

6

Detach fuel hoses (7) from fuel filter (1)


Loosen the fuel hoses (7) by turning by hand (do not use any sharp-edged pliers), or push them off the fitting using a blunt object (plastic wedge) or a blunt or broad-edged tool.
Otherwise, the fuel-resistant liner may be injured and the fuel system damaged.

 The installation position of the fuel hose (7) must be marked.

 Collect any leaking fuel.

 Pliers for click clamps

*171589003700



Check

7

Check fuel hoses (7) for damage

If complaint present



Rectify problem subject to separate repair order.



Remove

8

Remove screws (4)

9

Detach bracket (5) and lift out fuel filter (1)

Modify

10.1

Attach fuel filter condensation sensor with heating element (3) to new fuel filter (1)

Only for fuel filters (1) on which the fuel filter condensation sensor with heating element (3) is not included.

10.2

Attach fuel preheating heating element to new fuel filter (1)

Only for fuel filters (1) on which the fuel preheating heating element is not included.



Install

11

Install bracket (5) with new fuel filter (1)

12

Tighten bolts (4)

13

Attach fuel hoses (7) to fuel filter (1) using new CLIC clamps (6)


Install new CLIC clamps (6). Do not use screw clamps or spring bracket clamps.
Otherwise this may lead to leakage and consequential damage.

 Collect any leaking fuel.

 Pliers for click clamps

*171589003700

14.1

Connect and lock electrical connection (2) at fuel pressure sensor and fuel preheating heating element

Vehicle with fuel preheating heating element.

14.2

Connect and lock electrical connection (2) at fuel pressure sensor and fuel filter condensation sensor with heating element (3)

Vehicle with fuel filter condensation sensor with heating element (3).



Check

 Danger !

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

15

Start engine and check fuel system for leaks


Before the engine is started, the electronic ignition lock control unit must be switched to position "2" (circuit 15) for 5 s in order to fill the new fuel filter (1) 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 leaktightness.

If a leak is detected.



Switch electronic ignition lock control unit immediately to position "0", clean up any leaked fuel, determine and rectify reason. Then perform operation step 14 again.

16

Switch off engine



Install

17

Reinstall engine cover

Vehicle with engine cover.