Remove/install components for exhaust system · ar4910p7100gqa · Mercedes-Benz WIS

AR49.10-P-7100GQA

Remove/install components for exhaust system

07.07.2015

Model	166 with engine 276
Model	166 with engine 278

Modification notes

07.07.2015

Mutter/Schraube Profilschelle für AGRRohr/Katalysator an Abgasanlage/Abgasturbolader

Motor 276 im Typ 166

BA49.10-P-1004-01AK

Remove/install components for exhaust system

P49.10-3066-09

Shown on exhaust system for engine 276.8

2	Left catalytic converter		G3/3	Left oxygen sensor upstream of catalytic converter		G3/5	Left oxygen sensor downstream of catalytic converter
3	Right catalytic converter		G3/4	Right oxygen sensor upstream of catalytic converter		G3/6	Right oxygen sensor downstream of catalytic converter

P49.10-2959-09

Shown on exhaust system for engine 276.9

 	Remove/install
 Danger !	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
 Danger !	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
	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
1	Lift vehicle on vehicle lift		AR00.60-P-1000GZ
2	Remove underfloor paneling concerned	If necessary
			AR61.30-P-1001GQ
		 Installation: Only install underfloor paneling after the engine test run and leak test.
3	Disconnect electrical connection for the respective oxygen sensors (G3/3, G3/4, G3/5, G3/6) and expose feed lines, if necessary.	Model 166 with engine 276.8	AR07.52-P-5303GQC
		Model 166 with engine 276.9	AR07.52-P-5303GQ
		Model 166 with engine 278	AR07.52-P-5303MLJ
4	Disconnect electrical connections on NOx sensors and expose feed lines	Model 166 with engine 276.9
			AR07.70-P-0001GQ
5	Disconnect electrical connection for temperature sensors for NOx storage catalytic converters and expose feed lines	Model 166 with engine 276.9
			AR07.70-P-0002GQ
6.1	Remove exhaust manifold with catalytic converter	Model 166 with engine 276.9
			AR14.10-P-4095GQ
6.2	Remove/install ATL with exhaust manifold	Model 166 with engine 276.8, 278
		Model 166 with engine 276.8	AR09.40-P-6025GQC
		Model 166 with engine 278	AR09.40-P-6025MLJ
7	Detach EGR lines	Model 166 with engine 276.9
		 Nut/bolt, profile clamp for exhaust gas recirculation pipe/catalytic converter to exhaust system/exhaust gas turbocharger	*BA49.10-P-1004-01AK
8	Remove cross strut	If necessary
			AR22.10-P-1180GQ
9	Remove left (2) or right CAT (3)	Model 166 with engine 276.8
			AR49.10-P-5500GQC
10	Loosen corresponding components of exhaust system at connecting points and remove	 Installation: Align components for the exhaust system before firmly tightening screw connections free of tension.
		 Installation: Apply lubricating paste to the decoupling elements.
		 Model 166 with engine 278Bolt/nut, mount for rear exhaust system bracket	*BA49.10-P-1018-01AK
		 Model 166 with engine 278Bolt, cross connection left rear to right rear	*BA49.10-P-1017-01AK
		 Model 166 with engine 278Nut, exhaust line to turbocharger	*BA49.10-P-1016-01AK
		 Model 166 with engine 278Bolt, catalytic converter flange to exhaust line	*BA49.10-P-1015-01AK
		 Model 166 with engine 276Nut, exhaust system (exhaust manifold) flange connection to cylinder head	*BA49.10-P-1001-01AK
		 Model 166 with engine 276Nut/bolt, profile clamp for exhaust gas recirculation pipe/catalytic converter to exhaust system/exhaust gas turbocharger	*BA49.10-P-1004-01AK
		 Model 166 with engine 276Bolt, vibration damper to exhaust system	*BA49.10-P-1005-01AK
		 Bolt, center exhaust rubber mount bracket to body	*BA49.10-P-1010-01AK
		 Model 166 with engine 278Bolt, exhaust system clamp to catalytic converter	*BA49.10-P-1012-01AK
		 Model 166 with engine 276Nut, exhaust system clamp to catalytic converter	*BA49.10-P-1013-01AK
		Antifriction paste, rubber parts 2.5 kg, DBL 6867.00	*BR00.45-Z-1002-06A
	Clean
11	Remove combustion and corrosion residue at separating points
	Check
12	Check decoupling elements	Engine 276, if necessary
		 Check for wear and damage, and replace if necessary.
		 Nut, exhaust rubber mount to exhaust system/centering plate/strut	*BA49.10-P-1006-01AK
13	Install in the reverse order
	Check
14	Check installation position and for unobstructed movement of all components of the exhaust system
 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
15	Perform an engine test run and check exhaust system for leaktightness

 Exhaust system

Number	Designation		Engine 276 in model 166
BA49.10-P-1001-01AK	Nut, exhaust system (exhaust manifold) flange connection to cylinder head	Nm	16

 Exhaust system

Number	Designation		Engine 276 in model 166
BA49.10-P-1004-01AK	Nut/bolt, profile clamp for exhaust gas recirculation pipe/catalytic converter to exhaust system/exhaust gas turbocharger	Nm	15

 Exhaust system

Number	Designation		Engine 276 in model 166
BA49.10-P-1005-01AK	Bolt, vibration damper to exhaust system	Nm	22

 Exhaust system

Number	Designation		Engine 276 in model 166
BA49.10-P-1006-01AK	Nut, exhaust rubber mount to exhaust system/centering plate/strut	Nm	20

 Exhaust system

Number	Designation		Engine 157, 278 in model 166	Engine 276 in model 166
BA49.10-P-1010-01AK	Bolt, center exhaust rubber mount bracket to body	Nm	18	18

 Exhaust system

Number	Designation		Engine 157, 278 in model 166
BA49.10-P-1012-01AK	Bolt, exhaust system clamp to catalytic converter	Nm	35

 Exhaust system

Number	Designation		Engine 276 in model 166
BA49.10-P-1013-01AK	Nut, exhaust system clamp to catalytic converter	Nm	25

 Exhaust system

Number	Designation		Engine 157, 278 in model 166
BA49.10-P-1015-01AK	Bolt, catalytic converter flange to exhaust line	Nm	20

 Exhaust system

Number	Designation		Engine 157, 278 in model 166
BA49.10-P-1016-01AK	Nut, exhaust line to turbocharger	Nm	25

 Exhaust system

Number	Designation		Engine 157, 278 in model 166
BA49.10-P-1017-01AK	Bolt, cross connection left rear to right rear	Nm	20

 Exhaust system

Number	Designation		Engine 157, 278 in model 166
BA49.10-P-1018-01AK	Bolt/nut, mount for rear exhaust system bracket	Nm	20

Repair materials

Number	Designation	Order number
BR00.45-Z-1002-06A	Antifriction paste, rubber parts 2.5 kg, DBL 6867.00	A 000 989 01 60

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