Remove/install fuel tank

AR47.10-P-4100MFE

Remove/install fuel tank

01.04.2020

Model

118, 177, 247 with engine 608, 654

Modification notes

01.04.2020

Document completely revised.

Shown on model 177 with code U54 (Torsion-beam axle) and without code 916 (Fuel tank with large capacity - volume 1)

1

Fuel tank

5

Electrical connector

9

Fuel line

2

Screw

6

Fuel connections

10

Electrical line

3

Heat shield

8

Bolts

N118

Fuel pump control unit

4

Ground cable

Shown on model 177 with code M005 (Vehicles with 4MATIC/all-wheel drive)

1

Fuel tank

8

Bolts

10

Electrical line

5

Electrical connector

9

Fuel line

N118

Fuel pump control unit

6

Fuel connections

 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

 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 injury. Moving parts can pinch, crush or, in extreme cases even sever extremities.

No parts of the body or limbs should be within the operating area of mechanical components when moving components.

AS00.00-Z-0009-01A

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Notes on safety-relevant components

AH00.00-Z-0019-01A



Remove

1.1

Empty fuel tank (1) with fuel pump.

If fuel pump is intact.

AR47.10-P-4001MFE

1.2

Empty fuel tank (1) with tank emptying device.

With defective fuel pump.

AR47.10-P-4000MFE

2.1

Remove propeller shaft from rear axle differential.

Model 118, 177, 247 with engine 654
with code M005 (Vehicles with 4MATIC/all-wheel drive)

AR41.10-P-0050MFA

2.2

Lower the exhaust system until fuel tank (1) can be removed.

Model 118, 177, 247 with engine 608
Model 118, 177, 247 with engine 654
except code M005 (Vehicles with 4MATIC/all-wheel drive)

Model 118, 177, 247 with engine 608

AR49.10-P-7142MFE

Model 118, 177, 247 with engine 654
except code M005 (Vehicles with 4MATIC/all-wheel drive)

AR49.10-P-7142MFF

3

Remove trim of rear axle carrier.

Model 118, 177, 247 with engine 654
with code U55 (Multi-link axle)

AR61.30-P-0050MFA

4

Unscrew screw (2) and remove ground line (4).

Model 118, 177, 247 with engine 608
except code 916 (Fuel tank with large capacity - Volume 1)
Model 118, 177, 247 with engine 654
except code 916 (Fuel tank with large capacity - Volume 1)
except code M005 (Vehicles with 4MATIC/all-wheel drive)

5

Remove brackets and remove heat shield (3) downwards.

Model 118, 177, 247 with engine 608
Model 118, 177, 247 with engine 654
except code M005 (Vehicles with 4MATIC/all-wheel drive)

 Clip remover

*452589016300

6

Release and disconnect electrical connector (5) at fuel system control unit (N118).

7

Remove electric line (10) from underbody.

 Clip remover

*452589016300

8

Remove filler neck from fuel tank (1).

Model 118, 177, 247 with engine 608

AR47.10-P-7541MFE

Model 118, 177, 247 with engine 654

AR47.10-P-7541MFF

9

Support fuel tank (1).



000 588 10 62 00 Support plate

WS26.00-P-3309B



000 588 11 62 00 Major assembly mount

WS01.00-P-0092B

10

Remove screws (8).

11

Lower fuel tank (1) and remove.



000 588 10 62 00 Support plate

WS26.00-P-3309B



000 588 11 62 00 Major assembly mount

WS01.00-P-0092B

 Aid of helper required.



Install

12

Lift fuel tank (1) and position on underbody.



000 588 10 62 00 Support plate

WS26.00-P-3309B



000 588 11 62 00 Major assembly mount

WS01.00-P-0092B

 Aid of helper required.

13

Screw in screws (8).

 Bolt, fuel tank/tensioning strap for fuel tank to body

*BA47.10-P-1001-01T

14

Lower major assembly mount with mounting plate and move outside the working area.



000 588 10 62 00 Support plate

WS26.00-P-3309B



000 588 11 62 00 Major assembly mount

WS01.00-P-0092B

15

Install filler neck on fuel tank (1).

Model 118, 177, 247 with engine 608

AR47.10-P-7541MFE

Model 118, 177, 247 with engine 654

AR47.10-P-7541MFF

16

Attach electric line (10) to underbody.

17

Connect electrical connector (5) to fuel system control unit (N118) and lock.

18

Remove appropriate stop plugs.

 Record plug

*129589009100

19

Position fuel line (9) on fuel connections (6) and underbody.

20

Connect and lock fuel connections (6).

21

Position heat shield (3) on fuel tank (1) and install brackets.

Model 118, 177, 247 with engine 608
Model 118, 177, 247 with engine 654
except code M005 (Vehicles with 4MATIC/all-wheel drive)

22

Attach ground line (4) and screw in screw (2).

Model 118, 177, 247 with engine 608
except code 916 (Fuel tank with large capacity - Volume 1)
Model 118, 177, 247 with engine 654
except code 916 (Fuel tank with large capacity - Volume 1)
except code M005 (Vehicles with 4MATIC/all-wheel drive)

 Ensure correct routing of ground line (4).

 Bolt, fuel tank/tensioning strap for fuel tank to body

*BA47.10-P-1001-01T

23

Install trim of rear axle carrier.

Model 118, 177, 247 with engine 654
with code U55 (Multi-link axle)

AR61.30-P-0050MFA

24.1

Install exhaust system.

Model 118, 177, 247 with engine 608
Model 118, 177, 247 with engine 654
except code M005 (Vehicles with 4MATIC/all-wheel drive)

Model 118, 177, 247 with engine 608

AR49.10-P-7142MFE

Model 118, 177, 247 with engine 654
except code M005 (Vehicles with 4MATIC/all-wheel drive)

AR49.10-P-7142MFF

24.2

Mount propeller shaft on rear axle differential.

Model 118, 177, 247 with engine 654
with code M005 (Vehicles with 4MATIC/all-wheel drive)

AR41.10-P-0050MFA

25.1

Fill fuel tank (1).

If fuel pump is intact.

AR47.10-P-4001MFE

25.2

Fill fuel tank (1) with fuel in safety container.

With defective fuel pump.

AR47.10-P-4000MFE

 Fuel tank

Number

Designation

Model 118

Model 177

BA47.10-P-1001-01T

Bolt, fuel tank/tensioning strap for fuel tank to body

M8

Nm

23

23

 Fuel tank

Number

Designation

Model 247

BA47.10-P-1001-01T

Bolt, fuel tank/tensioning strap for fuel tank to body

M8

Nm

23