Remove/install engine with front axle carrier

AR01.10-P-2500EW

Remove/install engine with front axle carrier

08.10.2019

Engine

272, 273 in model 212

with code M005 (Vehicles with 4MATIC/all-wheel drive)

Modification notes

07.09.2018

Screw/bolt, rear engine support to frame floor assembly

Model 212

BA22.10-P-1005-03E

07.09.2018

Schraube Motorträger hinten an Rahmenboden

Typ 212

BA22.10-P-1005-03E

Shown on engine 272

2

Clamp

4

Purge line

8

Fuel feed line

3a

Hoses

5

Crankcase ventilation system vacuum line

9

Fuel distributor

3b

Power steering return lines

6

Brake booster vacuum line

20

Separation point

Shown on engine 272

32b

Coolant line

32c

Coolant line

33

Coolant pipe

34

Coolant pump

Shown on model 204

16

Refrigerant line

22

Propeller shaft

23

Rear engine crossmember

23a

Bolts

24

Bracket

 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

 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

 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

 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

 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 AIRmatic

Engine 272, 273 in model 212
with code 488 (Steel/air suspension)
with code M005 (Vehicles with 4MATIC/all-wheel drive)
Engine 272, 273 in model 212
with code 489 (AIRMATIC)
with code M005 (Vehicles with 4MATIC/all-wheel drive)

AH32.22-P-1000-02EW

Topical note

Notes on coolant

AH20.00-N-2080-01A

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Topical note

Notes on bolted connections with self tapping screws

AH00.00-P-0007-01SF

Notes on automatic transmission

Motor 272, 273 im Typ 212 mit Getriebe 722.9 mit Code M005 (4MATIC)

AH27.19-P-0001-01NKB

Notes on coolant level

AH20.00-P-1142-01CW

Notes on repair work on suspension components

AH00.00-P-0100-01A

 

Remove/install

1

Relieve all pressure in front suspension struts with diagnostic system

Engine 272, 273 in model 212
with code 489 (AIRMATIC)
with code M005 (Vehicles with 4MATIC/all-wheel drive)



AD00.00-P-2000-04A

2

Deactivate easy entry/exit feature

Engine 272, 273 in model 212
with code 275 (Memory Package (driver's seat, steering column and mirror))
with code M005 (Vehicles with 4MATIC/all-wheel drive)

3

Move front wheels to straight-ahead position and secure steering wheel


The steering wheel must not be turned when the steering coupling is removed.
Otherwise the clock spring contact will be destroyed.

 Retainer device

*129589012100

4

Remove ground line from battery

AR54.10-P-0003EW

5

Secure vehicle on vehicle lift

AR00.60-P-0100EWS

6

Remove air filter housing

AR09.10-P-1150EWS

7

Suction off refrigerant out of air conditioning

AR83.30-P-1760CW

8

Disconnect wiring harness for engine and transmission

AR01.10-P-2400-11EW

9

Detach purge line (4) from crankcase ventilation system vacuum line (5)

10

Remove brake booster vacuum line (6) on intake manifold

11

Empty power steering expansion reservoir

 Hand pump

*210589007100

12

Open hose clamps (2) and detach hoses (3a) from P/S return lines (3b) and close off openings with stop plugs

 Record plug

*129589009100

13

Detach refrigerant line at separating point (20)

 Record plug

*129589009100

Topical note

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

AH83.30-N-0005-01A

14

Detach the lower radiator trim in the area of the refrigerant line (16)

15

Remove refrigerant line (16) on condenser, and close off openings with stop plugs

Topical note

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

AH83.30-N-0005-01A

 Engine 272, 273 in model 212
with code M005 (Vehicles with 4MATIC/all-wheel drive)Screw/bolt, line to condenser

*BA83.30-P-1022-01A

 Record plug

*129589009100

16

Drain coolant at radiator

AR20.00-P-1142EWS

17

Remove oil lines on automatic transmission oil cooler and close off openings with stop plugs

Engine 272, 273 in model 212 with transmission 722.9
with code M005 (Vehicles with 4MATIC/all-wheel drive)

AR27.10-P-0501-03CW

 Record plug

*129589009100

18

Remove coolant pipe (33) at thermostat housing

Engine 272 in model 212
with code M005 (Vehicles with 4MATIC/all-wheel drive)

AR09.41-P-1311-01AL

19

Remove coolant line (32b) from coolant pump (34)

AR09.41-P-1311-01AL

20

Remove coolant line (32c) from shutoff valve of heating system

AR09.41-P-1311-01AL

21

Remove front exhaust system

AR49.10-P-7100EW

22

Disconnect steering coupling

AR46.10-P-8000EW

23

Remove drive shaft (22) from transmission output flange

AR41.10-P-0050EW

24

Remove bracket (24)

25

Remove front wheels



AP40.10-P-4050EW

26

Disconnect electrical connections from rpm sensors and brake pad contact sensor at the front right and unclip electrical lines from the brackets

AR33.10-P-0100-06CW

27

Remove brake caliper from brake caliper supports and fasten with attached lines to suspension strut

Engine 272, 273 in model 212
with code M005 (Vehicles with 4MATIC/all-wheel drive)
except code B07 (Ceramic brake system)with split floating caliper brake

AR42.10-P-0070EWC

Engine 272, 273 in model 212
with code M005 (Vehicles with 4MATIC/all-wheel drive)
except code B07 (Ceramic brake system)with non-split 1-piston floating caliper brake

AR42.10-P-0070EWB

Engine 272, 273 in model 212
with code M005 (Vehicles with 4MATIC/all-wheel drive)
except code B07 (Ceramic brake system)with 4-piston fixed-caliper brake

AR42.10-P-0070EWA

28

Remove front level sensor at strut rod

Engine 272, 273 in model 212
with code 488 (Steel/air suspension)
with code M005 (Vehicles with 4MATIC/all-wheel drive)
or with automatic headlamp range adjustmentEngine 272, 273 in model 212
with code 489 (AIRMATIC)
with code M005 (Vehicles with 4MATIC/all-wheel drive)or with automatic headlamp range adjustment

29

Remove torsion bar linkage from torsion bar

 Nut, link rod to stabilizer bar

*BA32.20-P-1001-02P

30

Remove suspension struts from steering knuckles

Engine 272, 273 in model 212
with code M005 (Vehicles with 4MATIC/all-wheel drive)
except code 489 (AIRMATIC)

AR32.25-P-1017EW

Engine 272, 273 in model 212
with code 489 (AIRMATIC)
with code M005 (Vehicles with 4MATIC/all-wheel drive)

AR32.25-P-1017EWA

31

Relieve fuel pressure over diagnostic socket

AR07.03-P-1460-01VA

 Engine 272 in model 212
with code M005 (Vehicles with 4MATIC/all-wheel drive)Protective cap to service valve

*BA07.03-P-1004-01B

 Pressure hose

*119589046300

32

Remove fuel feed line (8) and fuel distributor (9) and close off openings using stop plugs

 Union nut, fuel line to fuel distributor

*BA07.03-P-1001-01B

 Record plug

*129589009100

33

Remove seal and cold air intake from radiator crossmember

34

Fasten radiator to radiator crossmember with cable ties

35

Remove support struts and mounting plates from front axle carrier

 Fixing of support (strut)

*BA33.10-P-1002-01M

 Bolt, mounting plate/steering plate to front axle carrier

*BA33.10-P-1003-01M

36

Support front axle carrier with lifting platform and major assembly mount, and secure entire engine/transmission unit to prevent slipping and falling down with a tensioning strap



000 588 03 62 00 Lifting platform

WS01.00-P-0091A

 When doing so ensure that mounting plates are evenly aligned.

37

Remove screw/bolts (23a) of rear engine crossmember (23)

Topical note

Notes on bolted connections with self tapping screws

AH00.00-P-0007-01SF

 Screw/bolt, rear engine support to frame floor assembly

*BA22.10-P-1005-03E

38

Remove screw/bolts on front axle carrier from longitudinal members

Topical note

Notes on bolted connections with self tapping screws

AH00.00-P-0007-01SF

 Installation: Replace screw/bolts.

 Bolt, front axle carrier to longitudinal member

*BA33.10-P-1001-01M

39

Carefully lower engine-transmission unit with front axle carrier


The engine must not lie on the vehicle.
Damage can occur to lines and detachable parts otherwise.

40

Install in the reverse order



Check

41

Check and correct transmission oil level

Engine 272 in model 212 with transmission 722.96
with code M005 (Vehicles with 4MATIC/all-wheel drive)
Engine 273 in model 212 with transmission 722.96
with code M005 (Vehicles with 4MATIC/all-wheel drive)

AR27.00-P-0270SYZ

42

Fill power steering pump and bleed

AR46.30-P-0010EW

43

Check engine oil level and correct



Engine 273 in model 212
with code M005 (Vehicles with 4MATIC/all-wheel drive)

AP18.00-P-0101SX



Engine 272.923/952/980/983 in model 212
with code M005 (Vehicles with 4MATIC/all-wheel drive)

AP18.00-P-0101PIT



Engine 272.977 in model 212
with code M005 (Vehicles with 4MATIC/all-wheel drive)

AP18.00-P-0101VA

44

Perform wheel alignment check

AR40.20-P-0200EW

45

Read out fault memory using the diagnostic system and delete



AD00.00-P-2000-04A

 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

46

Carry out an engine test run, checking the engine for proper operation and leaktightness

 Injection nozzles, injection valves, lines

Number

Designation

Engine 272

Engine 273

BA07.03-P-1001-01B

Union nut, fuel line to fuel distributor

Nm

20

20

 Injection nozzles, injection valves, lines

Number

Designation

Engine 272

BA07.03-P-1004-01B

Protective cap to service valve

Plastic

Nm

2

Metal

Nm

15

 Engine mount, engine support (engine side)

Number

Designation

Model 212

BA22.10-P-1005-03E

Screw/bolt, rear engine support to frame floor assembly

M10x22

Silver

Nm

-

Black

Nm

-

M10x24

Black

Nm

-

M10x38

Nm

-

M10x20

Stage 1

Nm

35

Stage 2

Nm

50

 Front axle torsion bar

Number

Designation

Model 212

BA32.20-P-1001-02P

Nut, link rod to stabilizer bar

Nm

98

 Front axle carrier

Number

Designation

Model 212

BA33.10-P-1001-01M

Bolt, front axle carrier to longitudinal member

Nm

180

 Front axle carrier

Number

Designation

Model 212

BA33.10-P-1002-01M

Fixing of support (strut)

Nm

110

 Front axle carrier

Number

Designation

Model 212

BA33.10-P-1003-01M

Bolt, mounting plate/steering plate to front axle carrier

M10

Nm

55

M12

Nm

110

 Air conditioning

Number

Designation

Model 212

BA83.30-P-1022-01A

Screw/bolt, line to condenser

Nm

8