ar0940d6020ad

Remove/install turbocharger

Type ar · topic 09.40 · version 0101 · 2008-07-29

Applies to: ENGINE 900.917 /918 /919 in MODEL 668, 670

Where it sits

Function group 1 Engine › 09 Air intake, turbocharging › 09.40 Turbocharger — Series 668 · Series 670 · Series 900 (models 917, 918, 919)

EinPAS 15 Engine › 15.30 Air intake/charging › 15.30.51 Exhaust gas turbocharger — Series 668 · Series 670 · Series 900 (models 917, 918, 919)

AR09.40-D-6020AD

Remove/install turbocharger

9.7.08

ENGINE 900.917 /918 /919 in MODEL 668, 670

Remove/install turbocharger

D09.40-0038-06

Shown with pneumatic engine brake, code M23

1 Exhaust pipe

2 Clip

3 Clip

4 Injection line

5 Oil pressure line

6 Turbocharger

7 Oil return line

8 Engine brake flap connection

Remove/install turbocharger

D09.40-0039-09

Shown without pneumatic engine brake, code M23

6 Turbocharger

9 Bolt

12 Exhaust connection

10 Bolt

11 Exhaust manifold

Remove/install

1

Remove charge air pipe from turbocharger (6) to charge air cooler

AR09.41-D-1311AD

2

Remove oil pressure line (5) for turbocharger (6)

AR09.40-D-6024AD

3

Remove oil return line (7) for turbocharger (6)

AR09.40-D-6021AD

4

Remove injection line (4) for exhaust aftertreatment system

AR14.40-D-2001AD

5

Remove shield on turbocharger (6)

AR09.40-D-6020-01AD

*BA09.40-N-1004-01B

*BA09.41-N-1009-01B

Hand riveter

6

Remove clamp (2) and clamp (3) and push back exhaust pipe (1)

Possibly remove exhaust pipe (1) holder on transmission.

7

Remove engine brake flap fitting (8)

Only for pneumatic engine brake, code M23 or for
disengageable engine brake coupled to service brakes, code M25

AR14.15-D-6302AD

8

Remove bolts (9) and detach bolts (10) from exhaust manifold (11)

The detached bolts (10) are used as a holding aid.

*BA14.10-N-1001-01B

9

Remove exhaust manifold (11) together with turbocharger (6)

10

Remove bolt (10)

11

Remove exhaust fitting (12) from turbocharger (6)

Only without pneumatic engine brake, code M23 or without
disengageable engine brake coupled to service brakes, code M25

*BA14.10-N-1003-01B

12

Remove exhaust gas turbocharger (6) from exhaust manifold (11)

Only when replacing the turbocharger (6).

*BA09.40-N-1001-01B

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Checking

13

Measure shank length of bolts (9, 10)

If permissible shank length is exceeded, replace bolt concerned (9, 10).

*BE14.10-N-1001-01A

14

Install in the reverse order

15

Check engine oil level, correct if necessary

Observe poured in engine oil quality according to MB workshop equipment regulation.

Specified engine oils (service) - overview

Sheet 223.2

BB00.40-P-0223-02A

Danger!

Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running

Secure vehicle to prevent it from moving by itself.
Wear closed and snug-fitting work clothes.
Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

16

Start engine, observe oil pressure gauge on display at idle speed and stop engine

Do not rev up engine before oil pressure is indicated. The oil pressure indicator should indicate an oil pressure after approx. 10 s.

*BE18.00-N-1001-01C

17

Check turbocharger (6) for leaks

Check values for engine oil pressure

Number

Designation

Engine
900.9, 902.9, 904.9, 906.9

BE18.00-N-1001-01C

Engine oil pressure at

Idling speed

bar

0.5

maximum speed

bar

2.5

Check values for exhaust manifold

Number

Designation

Engine
900.9, 902.9, 904.9, 906.9

BE14.10-N-1001-01A

Exhaust manifold bolts

Thread diameter

M

10

Shank length
when new

mm

47.0

Permissible shank length

mm

47.5

Turbocharger

Number

Designation

Engine
900.9, 904.9

BA09.40-N-1001-01B

Nut, turbocharger to exhaust manifold

M8

Nm

30

M10

Nm

50

BA09.40-N-1004-01B

Bolt, shield to turbocharger

Nm

25

Charge air pipe/charge air cooling

Number

Designation

Engine
900.9
in model 668, 670

BA09.41-N-1009-01B

Bolt, shield to charge air manifold

Nm

25

Exhaust manifold

Number

Designation

Engine
900.9, 902.9, 904.9, 906.9

BA14.10-N-1001-01B

Bolt, exhaust manifold to cylinder head

Stage 1

Nm

10

Stage 2

Nm

55

Stage 3

°

90

BA14.10-N-1003-01B

Nut, exhaust fitting on turbocharger

M10

Nm

50

Referenced documents