Remove/Install Air Intake Pipe - AR09.10-S-8131EG

Model 447, 448 with engine 274 

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

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

Courtesy of MERCEDES-BENZ USA

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

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

Courtesy of MERCEDES-BENZ USA

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

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

	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
Notice	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 cover cap (19)
5	Remove electrical line (20) from alternator (22)	To do this, unscrew and remove nut.
		Nut, line to alternator	*BA15.40-Z-1002-01KOX
6	Disconnect electrical connection from valve (26)
7	Remove screws (6)	Bolt, oil separator to crankcase	*BA01.20-Z-1006-01KOW
8	Remove oil separator (3) from crankcase	: Replace seal.
9	Open clamp (5) and push on the vent line (4) in the direction of the oil separator (3)	Hose clamp pliers	Fig 1
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	Unscrew screw (16)	Model 447 with engine 274 with code ZL3 (National version for Latin America) Screw/bolt, housing vent to charge air distributor	*BA09.41-Z-1005-01KOV
13	Remove distributor (17) from charge air distributor	Model 447 with engine 274 with code ZL3 (National version for Latin America) : Replace 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) from 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)	: 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	: 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. : 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 (14)	M6	*BA00.10-Z-1002-01KOA
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). : Ensure correct installation position.
26	Install in the reverse order
	Check
27	Check engine oil level
	Multigrade engine oils (specification 229.5)	Depending on findings ↓ Correct engine oil level.	BB00.40-P-0229-05A
	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 leak tightness with engine running	Visual inspection only.

Fig 1: Identifying Hose Clamp Pliers (003 589 03 37 00)

Courtesy of MERCEDES-BENZ USA