Remove/install air intake pipe

AR09.10-S-8131EG

Remove/install air intake pipe

09.12.2016

Model

447, 448 with engine 274

Modification notes

07.12.2016

Method completely revised

Operation steps 1 to 28

19

Cap

20

Electrical line

21

Electrical connection

22

Alternator

Shown is model 447 with code ZU7 (National version for Canada)

1

Air intake pipe

4

Vent line

26

Valve

2

Wide open throttle crankcase ventilation system

5

Clamp

3

Oil separator

6

Screw/bolts

Shown is model 447 with code ZU7 (National version for Canada)

1

Air intake pipe

9

Vent line

12

Marking

7

Vacuum line

10

Clamps

8

Vent line

11

Clamp

Shown is model 447 with code ZU7 (National version for Canada)

2

Wide open throttle crankcase ventilation system

13

Bracket

14

Screw/bolt

Shown is model 447 with code ZL3 (National version for Latin America)

2

Wide open throttle crankcase ventilation system

14

Screw/bolt

15

Vent line

16

Screw/bolt

17

Distributor

18

Sealing ring

23

Circulation pump

24

Bracket

25

Electrical connection

 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



Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

 

Remove/install

1

Remove ground line from battery

AR54.10-S-0003E

2

Remove left engine support

AR22.10-S-4350EG

3

Unplug electrical connection (21) at alternator (22)

4

Remove cap (19)

5

Remove electrical line (20) from alternator (22)

 To do this, unscrew and remove nut.

 Nut, line to alternator

*BA15.40-N-1002-01X

6

Disconnect electrical connection from valve (26)

7

Remove screw/bolts (6)

 Bolt, oil separator to crankcase

*BA01.20-N-1006-01W

8

Remove oil separator (3) from crankcase

 Installation: Replace seal.

9

Open clamp (5) and push on the vent line (4) in the direction of the oil separator (3)

 Hose clamp pliers

*003589033700

10

Remove vent line (4) from charge air distributor

11

Remove vent line (15) on distributor (17)

Model 447 with engine 274
with code ZL3 (National version for Latin America)

12

Remove screw/bolt (16)

Model 447 with engine 274
with code ZL3 (National version for Latin America)

 Screw/bolt, housing vent to charge air distributor

*BA09.41-N-1005-01V

13

Remove distributor (17) from charge air distributor

Model 447 with engine 274
with code ZL3 (National version for Latin America)

 Installation: Install new sealing ring (18).

14

Remove engine air intake duct downstream of air filter

AR09.10-S-8130E

15

Remove vacuum line (7) on air intake pipe (1)

16

Remove vent line (8) on air intake pipe (1)

Model 447 with engine 274
except code ZL3 (National version for Latin America)
except code ZU7 (National version for Canada)
except code ZU8 (National version for USA)
Model 447 with engine 274
with code ZU7 (National version for Canada)
Model 447 with engine 274
with code ZU8 (National version for USA)
Model 448 with engine 274

17

Remove vent line (9) on air intake pipe (1)

Model 447 with engine 274
except code ZL3 (National version for Latin America)
except code ZU7 (National version for Canada)
except code ZU8 (National version for USA)
Model 447 with engine 274
with code ZU7 (National version for Canada)
Model 447 with engine 274
with code ZU8 (National version for USA)
Model 448 with engine 274

18

Remove clamps (10)

19

Loosen clamp (11)

 Installation: Position screw part of the clamp (11) for marking (12) on the air intake pipe (1).

20

Remove air intake pipe (1)

21

Remove sealing ring between air intake pipe (1) and ATL

 Installation:
The sealing ring must first be inserted in the air intake pipe (1) so that crushing of the sealing ring during installation is avoided.
Parts of the crushed sealing ring can otherwise severely damage the ATL.

 Installation: The sealing ring must be replaced after every removal. The inside diameter of the sealing ring as well as the fitting of the ATL must be wet well with lubricant before assembly.

Lubricant

*BR00.45-Z-1032-06A

22

Remove wide open throttle crankcase ventilation system (2) from the holders (13)

Model 447 with engine 274
except code ZL3 (National version for Latin America)
except code ZU7 (National version for Canada)
except code ZU8 (National version for USA)
Model 447 with engine 274
with code ZU7 (National version for Canada)
Model 447 with engine 274
with code ZU8 (National version for USA)
Model 448 with engine 274

23

Remove screw/bolt (14)

 M6

*BA00.10-N-1002-01A

24

Remove circulation pump (23) from holder (24)

Model 447 with code H12 (Auxiliary water heater) Model 447 with code HH9 (Semi-automatic regulated A/C, TEMPMATIC) Model 447, 448 with code HH4 (AAC THERMOTRONIC) Model 447.7/8 with code H13 (Rear additional heat exchanger) Model 447.7/8, 448 with code HZ7 (Semi-automatic regulated A/C, TEMPMATIC in the rear)

 Do not disconnect electrical connection (25).
Do not remove coolant hoses from the circulation pump (23).

25

Remove wide open throttle crankcase ventilation system (2) together with the air intake pipe (1) and the oil separator (3) upwards

 The air intake pipe (1) can only be removed together with wide open throttle crankcase ventilation system (2) and the oil separator (3).

 Installation: Check for a correct installation position.

26

Install in the reverse order



Check

27

Check engine oil level



Multigrade engine oils (specification 229.5)

BB00.40-P-0229-05A

Depending on findings



Correct engine oil level.

 Danger !

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

28

Check for leaktightness with engine running

 Visual inspection only.

 Headless screws/bolts: screws/bolts and nuts, coarse-pitch thread

Number

Designation

8.8

10.9

BA00.10-N-1002-01A

M6

Galvanized

Nm

9

13

Phosphated

Nm

9

12

 Headless screws/bolts: screws/bolts and nuts, coarse-pitch thread

Number

Designation

12.9

BA00.10-N-1002-01A

M6

Galvanized

Nm

16

Phosphated

Nm

14

 Crankcase ventilation, cylinder head cover

Number

Designation

Engine 274

BA01.20-N-1006-01W

Bolt, oil separator to crankcase

Nm

9

 Charge air distributor

Number

Designation

Engine 274 in model 447, 448

BA09.41-N-1005-01V

Screw/bolt, housing vent to charge air distributor

Nm

6

 Alternator

Number

Designation

Engine 274 in model 447, 448

BA15.40-N-1002-01X

Nut, line to alternator

M8

Nm

15

Repair materials

Number

Designation

Order number

BR00.45-Z-1032-06A

Lubricant

A 000 989 08 60