Remove/install front engine mount and/or engine support

AR22.10-P-1260ELS

Remove/install front engine mount and/or engine support

17.10.2016

Engine

276.8 in model 212, 218 with transmission 722.9

1

Heat shield

2

Screw/bolt

3

Engine support

4

Engine mount

5

Screw/bolts

6

Clamp

7

Catalytic converter



Notes on bolted connections with self tapping screws

AH00.00-P-0007-01SF

 

Remove/install

1

Remove right and left air filter housing

AR09.10-P-1150ELS

2

Detach heat shield (1)

Engine 276.8 in model 212 with transmission 722.9
except code M005 (4MATIC)
Engine 276.8 in model 218 with transmission 722.9
except code M005 (4MATIC)

 Bolt/nut for shield attachment

*BA09.40-P-1011-01W

3

Detach clamps (6) for exhaust pipe on ATL

Engine 276.8 in model 212 with transmission 722.9
except code M005 (4MATIC)
Engine 276.8 in model 218 with transmission 722.9
except code M005 (4MATIC)

 Bolt, pipe clamp to exhaust gas turbocharger

*BA49.10-P-1050-01AE

4

Remove engine compartment paneling

AR61.20-P-1105EW

5

Remove both catalytic converters (7)

Engine 276.8 in model 212 with transmission 722.9
except code M005 (4MATIC)
Engine 276.8 in model 218 with transmission 722.9
except code M005 (4MATIC)

AR49.10-P-7100EL

 Installation: Replace seals.

6

Remove exhaust gas ATL

Engine 276.8 in model 212, 218 with transmission 722.9
with code M005 (4MATIC)

AR09.40-P-6025ELS

7

Detach alternator and place to one side with the lines connected

Engine 276.8 in model 212, 218 with transmission 722.9
with code M005 (4MATIC)

8

Remove right oil return line

Engine 276.8 in model 212, 218 with transmission 722.9
with code M005 (4MATIC)

AR18.30-P-6850ELS

9

Detach heat shield for engine mount on engine support (3)

 Bolt/nut for shield attachment

*BA09.40-P-1011-01W

10

Mount engine hoist and raise engine until the engine mount (4) is relieved

AR33.10-P-0105EW

 Engine lifting device

*240589006100

11

Remove screw/bolts (2) for engine support (3) on engine mounts (4)

 Bolt, front engine mount to engine support

*BA22.10-P-1001-03E

 Engine mount wrench set

*001589011600

12

Remove screw/bolts (5) for engine mounts (4) on front axle carrier

 Bolt, front engine mount to front axle carrier

*BA22.10-P-1002-03E

13

Raise engine further


When lifting the engine no cable and lines should be put under tension.
Otherwise they may be damaged.

14

Take out engine mount (4)

 Installation: Exclusively replace engine mount (4) in pairs.

 Installation: Ensure that the correct installation position is obtained when assembling the engine mount (4).

 Observe environmental protection regulations for disposal of the engine mount (4). Dispose engine mounts (4) into mixed scrap.

15

Remove screw/bolt, front axle transmission to engine support (3)

 Collar bolt, front axle gear to engine support

*BA33.30-P-1007-03G

16

Remove screw/bolt, A/C compressor to engine support (3)

 Screw/bolt, refrigerant compressor to timing case/crankcase/engine support

*BA83.55-P-1001-01M

17

Detach engine support (, 3) at crankcase and remove

 Bolt, engine support to crankcase

*BA22.10-P-1001-02A

18

Install in the reverse order

 Turbocharger

Number

Designation

Engine 276.8

BA09.40-P-1011-01W

Bolt/nut for shield attachment

M6

Nm

9

 Engine support (engine side)

Number

Designation

Engine 276

BA22.10-P-1001-02A

Bolt, engine support to crankcase

Stage 1

Nm

20

Stage 2

°

90

 Engine mount, engine support (engine side)

Number

Designation

Model 212

Model 218

BA22.10-P-1001-03E

Bolt, front engine mount to engine support

M10

Nm

50

50

M12

Stage 1

Nm

85

85

Stage 2

°

90

90

 Engine mount, engine support (engine side)

Number

Designation

Model 212

Model 218

BA22.10-P-1002-03E

Bolt, front engine mount to front axle carrier

M8

Nm

28

28

 Front axle gear

Number

Designation

Model 212

Model 218

BA33.30-P-1007-03G

Collar bolt, front axle gear to engine support

Stage 1

Nm

5

5

Stage 2

Nm

50

50

Stage 3

°

95

95

 Exhaust system

Number

Designation

Engine 156, 157, 271, 272, 273, 276, 278 in model 212

Engine 157, 276, 278 in model 218

BA49.10-P-1050-01AE

Bolt, pipe clamp to exhaust gas turbocharger

Nm

15

15

 Refrigerant compressor

Number

Designation

Engine 276

BA83.55-P-1001-01M

Screw/bolt, refrigerant compressor to timing case/crankcase/engine support

Nm

20