Remove/install ignition coils of right cylinder bank

AR15.12-P-2009MNB

Remove/install ignition coils of right cylinder bank

18.11.2019

Engine

178 in model 190

1

Vacuum hose

2

Vent line

3

Electrical connector

4

Engine wiring harness

5

Bolts

6

Strut

7

Soundproofing

14

Fuel line

17

Electrical connector

19

Bolts

15

Bolts

16

Vent line

23

Electrical connector

26

Bolts

27

Bolts

28

Electrical connector

T4

Cylinders 1+2 ignition coil

T4/1

Cylinder 3+4 ignition coil

 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 death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)

Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.

AS00.00-Z-0035-01A

 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

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Topical note

Notes on avoiding damage to ignition system

AH15.10-P-0002-01V

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

 

Remove/install

1

Open hood.

AR88.40-P-1000RG

 Installation: Only close the engine hood after the leak test.

2

Remove upper engine cover.

 Installation: Only install upper engine cover after the leak test.

3

Remove cover over the exhaust gas turbochargers.

 M61

*BA00.10-P-1002-04A

4

Remove vacuum hose (1) from vacuum line and seal openings with suitable stop plugs.

 Record plug

*129589009100

5

Unclip ME-SFI control unit and place to one side with connected lines.

AR07.08-P-1000MNB

6

Unclip bleed line (2) and place to one side.

7

Remove screws (19) from engine wiring harness (4).

 M61

*BA00.10-P-1002-04A

8

Remove engine wiring harness (4) from strut (6).

9

Release and disconnect electrical connector (3) and place engine wiring harness (4) to one side.

10

Remove screws (5) and remove strut (6).

 Bolt, retaining plate to body

*BA62.30-P-1002-01I

 Bolt, strut to body/retaining plate

*BA62.30-P-1001-01I

11

Remove soundproofing (7) of the right fuel high-pressure pump.

12

Remove soundproofing of the right rail.

13

Remove fuel pressure via the service connection.

AR07.03-P-1460-01MNA

 Dust protection cap to service connection

*BA07.03-P-1005-01H

 Pressure hose

*119589046300

14

Unclip engine wiring harness (4) from fuel line (14).

15

Remove bracket of the fuel line (14) from the cylinder head cover.

 Bolt, fuel line clamp to engine/bracket

*BA07.03-P-1004-01H

 Danger

Risk of explosion caused by fuel igniting. Risk of injury to skin and eyes caused by fuel spraying out at high pressure

Keep all ignition sources out of hazard area.
Do not carry out any work on system when it is pressurized.

AS07.16-Z-0001-01A

16

Remove fuel line (14) from the right fuel high-pressure pump and from the right rail.

Relieve fuel pressure

AR07.03-P-1460-02MM

Topical note

Notes on threaded connections fastened using a tightening angle-based tightening process

AH00.00-P-0020-01A

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

AH00.00-P-0015-01CW

 Union nut, fuel line to fuel distributor/fuel system high-pressure pump

*BA07.03-P-1001-01H

17

Seal openings with suitable stop plug.

 Record plug

*129589009100

18

Remove screws (15), remove bleed line (16), and seal openings with suitable stop plugs.

 Installation: Replace seal.

 Bolt, vent line to cylinder head cover/turbocharger

*BA01.20-P-1001-01J

 Record plug

*129589009100

19

Release and disconnect electrical connector (17).

When removing ignition coil for cylinders 1+2 (T4).

20

Release and disconnect electrical connector (23).

When removing ignition coil for cylinders 1+2 (T4).

21

Release and disconnect electrical connector (28).

When removing ignition coil for cylinders 3+4 (T4/1).

22

Remove the respective screws (26, 27) and remove respective ignition coil (T4, T4/1) upward.

 Installation:
To reduce the force required for connection and disconnection, apply spark plug connector grease prior to installation of the spark plug connector.
Otherwise the spark plug connector will be damaged when removed again.

 Installation: Approx. Fill 1 g of spark plug connector grease into the spark plug connector.

Spark plug connector grease

*BR00.45-Z-1102-06A

 Bolt, ignition coil to cylinder head cover

*BA15.10-P-1001-04D

23

Install in the reverse order.

24

Read out and delete fault memory.



AD00.00-P-2000-04B

 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

25

Perform engine test run and check engine for proper operation and leak tightness.

26

Install upper engine cover.

27

Close hood.

AR88.40-P-1000RG

 Metric screws/bolts and nuts as per MBN 10 105, 10 143

Number

Designation

8.8

10.9

BA00.10-P-1002-04A

M61

Nm

9

13

 Crankcase ventilation system, cylinder head cover

Number

Designation

Engine 178

BA01.20-P-1001-01J

Bolt, vent line to cylinder head cover/turbocharger

Nm

9

 Injection nozzles, injection valves, lines

Number

Designation

Engine 178

BA07.03-P-1001-01H

Union nut, fuel line to fuel distributor/fuel system high-pressure pump

In case of reusability

Nm

22

For new lines

Stage 1

Nm

15

Stage 2

°

90

 Injection nozzles, injection valves, lines

Number

Designation

Engine 178

BA07.03-P-1004-01H

Bolt, fuel line clamp to engine/bracket

Nm

9

 Injection nozzles, injection valves, lines

Number

Designation

Engine 178

BA07.03-P-1005-01H

Dust protection cap to service connection

Nm

1

 Ignition coil

Number

Designation

Engine 178

BA15.10-P-1001-04D

Bolt, ignition coil to cylinder head cover

Nm

9

 Cross member and front reinforcement

Number

Designation

Model 190

BA62.30-P-1001-01I

Bolt, strut to body/retaining plate

M8

Nm

30

 Cross member and front reinforcement

Number

Designation

Model 190

BA62.30-P-1002-01I

Bolt, retaining plate to body

M8

Nm

30

Repair materials

Number

Designation

Order number

BR00.45-Z-1102-06A

Spark plug connector grease

A 002 989 80 51