Remove/install engine with front axle carrier

AR01.10-P-2500OID

Remove/install engine with front axle carrier

20.03.2020

Engine

656 in model 167

Modification notes

12.03.2020

"Pressure release of air suspension" modified.

Operation step 2

12.03.2020

"Pressure release of electrohydraulic suspension", changed.

Operation step 3

22

Cover

24

Coolant hose

25

Vacuum line

26

Refrigerant line

27

Separation point

28

Vent line

29

Equipment compartment

11

Front axle carrier

12

Fuel hoses

13

Bracket

14

Ground cable

17

Strut

18

Strut

N37/8

NOx sensor control unit downstream of SCR catalytic converter

 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 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

 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

 Warning

Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.

Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.

AS20.00-Z-0001-01A

 Caution

Risk of injury to skin and eyes due to handling of engine oil. Risk of poisoning caused by swallowing engine oil

Wear protective gloves, protective clothing and safety glasses.
Do not fill engine oil into beverage containers.

AS18.00-Z-0001-01A

 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

Protect air conditioning circuit and components from moisture when carrying out repair work

AH83.30-N-0005-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

Topical note

Notes on coolant

AH20.00-N-2080-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Topical note

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

AH00.00-P-0020-01A

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Topical note

Information on E-ACTIVE BODY CONTROL suspension

AH32.50-P-0002-01ME

Topical note

Notes on air suspension

AH32.22-P-1000-01T

Notes on automatic transmission

AH27.19-P-0001-01NKB

Use of engine no. when installing reconditioned engines and factory-new replacement engines or crankcases

AH01.10-P-0001-01A

Notes on repair work on suspension components

AH00.00-P-0100-01A

 

Remove/install

1

Secure vehicle on vehicle lift.

AR00.60-P-1006A

2

Pump pneumatic pressure of suspension struts using vehicle diagnosis system to central reservoir.

Engine 656 in model 167
with code 489 (AIRMATIC)
except code 490 (Electrohydraulic suspension)
Engine 656 in model 167
with code 489 (AIRMATIC)
with code 490 (Electrohydraulic suspension)



AD00.00-P-2000-06ME


The complete wheels must not touch the ground.
Otherwise, the air springs may be pre-damaged and subsequently malfunction.

 Select menu item "Actuations" in active suspension and damping system control unit.

 Installation: Pump pneumatic pressure using vehicle diagnosis system from central reservoir to suspension struts.

3

Perform emptying of hydraulic pressure lines of electrohydraulic suspension using guided diagnosis.

Engine 656 in model 167
with code 489 (AIRMATIC)
with code 490 (Electrohydraulic suspension)

AR32.50-P-0042ME

4

Deactivate easy entry and exit feature.

5

Move front wheels to straight-ahead position and fix steering wheel in place with holding device.

 Retainer device

*129589012100

6

Put transmission into neutral position.

7

Release parking brake.

8

Clamp off ground line from battery.

AR54.10-P-0003ME

9

Drain off coolant.

AR20.00-P-1142OID

 Installation: Only install lower engine compartment paneling after leak test.

10

Discharge air conditioning system.

AR83.30-P-1760ME

11

Drain engine oil.



AP18.00-P-0101OIB

12

Remove exhaust system.

AR49.10-P-7142OID

 Reinstall rear engine carrier and slightly tighten bolts by hand.

13

Detach drive shaft from transmission.

AR41.10-P-0050OID

14

Release and disconnect electrical connector of NOx sensor control unit downstream of SCR catalytic converter (N37/8).

15

Remove heat shield at automatic transmission.

 Screw/bolt, heat shield to oil pan

*BA27.10-P-1009-04H

16

Release and disconnect electrical connector at automatic transmission.

17

Secure wiring harness of automatic transmission and NOx sensor control unit downstream of SCR catalytic converter (N37/8) at frame floor assembly with cable tie.

18

Remove rear lower shield at transfer case.

Engine 656 in model 167
with code 430 (Offroad package)

 Screw, shield to off-road bracket

*BA28.10-P-1008-01I

19

Release and disconnect electrical connectors from the transfer case.

20

Remove wiring harness from transfer case and secure at frame floor assembly with cable tie.

21

Remove ground line (14) at transmission housing and place to one side.

 Bolt, ground line to transmission housing

*BA27.10-P-1024-04H

22

Remove fuel hoses (12) from fuel lines and collect escaping fuel, seal openings with suitable stop plugs.

 Installation: Install new fuel hoses (12).

 Pliers for click clamps

*171589003700

 Record plug

*129589009100

23

Remove fuel hoses (12) from bracket (13) and secure to engine.

24

Disconnect steering coupling at steering shaft.

AR46.10-P-8000ME

25

Release and disconnect electrical connectors of the front engine mounts.

AR22.10-P-4330OID

26

Remove electrical wiring harness of front engine mounts from front axle carrier (11).

27

Release, disconnect electrical connectors at electric power steering actuator motor and remove electric line from front axle carrier (11) and place to one side.

AR46.20-P-0600ME

28

Remove front wheel and tire assemblies.

AR40.10-P-1102ME

29

Remove front fender liners.

AR88.10-P-1301ME

30

Remove all electric lines from electrohydraulic controller units, expose electric lines and secure to longitudinal member.

Engine 656 in model 167
with code 489 (AIRMATIC)
with code 490 (Electrohydraulic suspension)

AR32.50-P-0047ME

31

Remove air filter housing.

AR09.10-P-1150OID

 Installation: Do not install engine cover until after the leak test.

32

Remove automatic transmission oil cooler from fan unit.

AR27.55-P-1000OID

33

Remove coolant hoses at automatic transmission oil cooler.

AR20.20-P-7441-01RQ

34

Remove engine air intake duct downstream of air filter.

AR09.10-P-8130OID

35

Remove refrigerant line (26) from separating point (27) and seal connections with suitable stop plugs and protective covers.

 Installation: Install new sealing rings.

 Nut, refrigerant line connecting point

*BA83.30-P-1002-01U

 Set of protective caps

*001589009100

 Assembly tool

*000589936300

 Record plug

*129589009100

36

Remove bottom refrigerant line from condenser and seal openings with suitable stop plugs.

 Installation: Replace sealing ring.

 Nut, refrigerant line to condenser

*BA83.30-P-1003-01U

 Record plug

*129589009100

 Assembly tool

*000589936300

37

Remove bleed line (28) from equipment compartment (29) and secure to engine.

38

Remove differential pressure sensor and secure to engine with connected pressure lines.

AR07.04-P-0025OID

39

Remove cover (22).

40

Disconnect engine wiring harness for removal of the engine.

AR15.18-P-1000-05OID

 Nut, positive line to fuse and relay module in engine compartment

*BA54.15-P-1003-01L

 Nut, positive line to rear fuse and relay module

*BA54.15-P-1004-01L

41

Remove AdBlue® metering valve and place to one side.

AR49.20-P-2000OID

42

Remove coolant hose (24) at partition and seal connections with protective covers.

AR20.20-P-7441-01RQ

 Set of protective covers

*001589019100

43

Remove vacuum line (25) at partition and seal connections with suitable stop plugs.

 Record plug

*129589009100

44

Remove all coolant hoses from engine.

AR20.20-P-7441-01RQ

 Hose clamp pliers

*454589003700

45

Remove rpm sensors from steering knuckles and secure with cable ties to suspension struts.

AR42.30-P-0713ME

46

Unclip electric lines from spring links and steering knuckles.

47

Remove electrical connector of front right brakepad wear sensor (S10/2) from brake caliper, expose wiring harness at steering knuckles and secure with cable tie to suspension strut.

48

Remove brake caliper with brake caliper supports and fasten to vehicle free of tension.

Engine 656 in model 167

Engine 656 in model 167 except code B06 (brake calipers painted gray) except code U29 (AMG high-performance brake system) except code U70 (brake calipers painted red)

AR42.10-P-0070ME

49

Remove steering knuckles from top transverse control arms.

AR33.25-P-0400ME


Secure the steering knuckle again folding away.
Otherwise, damage to the joint will occur.

50

Remove suspension struts from spring links.

Engine 656 in model 167
except code 489 (AIRMATIC)
except code 490 (Electrohydraulic suspension)
Engine 656 in model 167
with code 489 (AIRMATIC)
except code 490 (Electrohydraulic suspension)

AR32.25-P-1017ME

Engine 656 in model 167
with code 489 (AIRMATIC)
with code 490 (Electrohydraulic suspension)

AR32.25-P-1017MEH

51

Support front axle carrier (11) with lifting platform.



000 588 03 62 00 Lifting platform

WS01.00-P-0091A

52

Secure engine transmission unit against slipping and falling down with tensioning strap.

53

Remove struts (17, 18).

AR33.10-P-0100ME

54

Remove rear engine carrier from frame floor assembly.

AR22.10-P-4360OID

 Installation: Only tighten bolts and nuts of rear engine carrier to torque after front exhaust system has been installed.

55

Lower engine transmission unit with front axle carrier (11).


Carefully lower engine transmission unit with front axle carrier (11).
Otherwise damage will occur.

 Aid of helper required.

56

Fasten steering knuckles with a tensioning strap to the engine.

57

Install in the reverse order.

58

Perform wheel alignment measurement.

AR40.20-P-0200ME

59

Read out and delete fault memory.



AD00.00-P-2000-06ME

60

Calibrate Distance Pilot DISTRONIC controller unit.

Engine 656 in model 167
with code 233 (Adaptive cruise control Plus (DISTRONIC PLUS))
with code 239 (Adaptive cruise control Pro (DISTRONIC PRO))



AD00.00-P-2000-06ME

 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

61

Carry out engine test run and check engine for proper operation and leak tightness.

62

Install lower engine compartment lining.

AR61.20-P-1105ME

63

Install engine cover.

AR01.10-P-2405OID

 Automatic transmission complete

Number

Designation

Transmission 725.0

BA27.10-P-1009-04H

Screw/bolt, heat shield to oil pan

Nm

9

 Automatic transmission complete

Number

Designation

Transmission 725.0

BA27.10-P-1024-04H

Bolt, ground line to transmission housing

Nm

20

 Complete transfer case

Number

Designation

Model 167
with code 430 (Offroad package)

BA28.10-P-1008-01I

Screw, shield to off-road bracket

M5

Nm

5

 Fuse and relay box

Number

Designation

Model 167

BA54.15-P-1003-01L

Nut, positive line to fuse and relay module in engine compartment

M6

Nm

8

M8

Nm

16

 Fuse and relay box

Number

Designation

Model 167

BA54.15-P-1004-01L

Nut, positive line to rear fuse and relay module

M8

Nm

16

 Air conditioning

Number

Designation

Model 167

BA83.30-P-1002-01U

Nut, refrigerant line connecting point

M6

Nm

12

M8

Nm

20

 Air conditioning

Number

Designation

Model 167

BA83.30-P-1003-01U

Nut, refrigerant line to condenser

M6

Nm

12