Remove/install components for exhaust system - AR49.10-P-7100SXI

ENGINES 642, 629 in MODEL 221 with CODE (474) Particulate filter

ENGINES 651 in MODEL 221

Shown on model 211 with engine 629

Fig 1: Identifying Exhaust System Remove/Install Components - Shown On Model 211 With Engine 629

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of death caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.	AS00.00-Z-0010-01A
	Risk of injury to skin and eyes caused by handling hot or glowing objects.	Wear safety gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
	Risk of injury from grazing 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	Remove bottom sections of soundproofing	If necessary.
		Vehicles without code (Z07) Top protection	AR61.20-P-1105SX
		Vehicles with code (Z07) Top protection Only install soundproofing bottom section after an engine test run and leak test.	AR61.20-P-1105SXS
2	Remove rear skid plate	If necessary.
2	Remove rear skid plate	Vehicles with code (Z07) Top protection	AR61.40-P-1010SXS
3	Disconnect electrical connector for the corresponding O2 sensors and expose feed lines	If necessary.
4	Disconnect electrical connector for the corresponding temperature sensors and expose feed lines	If necessary.
5.1	Remove pressure lines for pressure differential sensor at diesel particulate filter (3)	Vehicles except code (U42) BlueTEC (SCR) diesel exhaust treatment See diesel particulate filter remove/install if necessary:
		Engine 642	AR14.40-P-1000SXI
		Engine 629	AR14.40-P-1000SXJ
5.2	Remove diesel particulate filter	Engine 642.8 with code (U42) BlueTEC (SCR) diesel exhaust treatment	AR14.40-P-1000SXI
5.3	Remove catalytic converter diesel particulate filter unit	Engine 651	AR49.10-P-5501SXI
6	Remove NOx sensors with controller unit	Engine 642.8 with code (U42) BlueTEC (SCR) diesel exhaust treatment	AR14.40-P-2038OGE
7	Remove injection nozzle for exhaust aftertreatment system	Engine 642.8 with code (U42) BlueTEC (SCR) diesel exhaust treatment	AR14.40-P-2000GZB
8	Detach corresponding part of exhaust system at separation points and remove	Align parts of exhaust system tension-free before tightening bolted connections. Apply liquid lubricant to rubber mounts for exhaust system. Engine 642
			*BA49.10-P-1001-01V
			*BA49.10-P-1002-01V
			*BA49.10-P-1003-01V
			*BA49.10-P-1004-01V
			*BA49.10-P-1005-01V
			*BA49.10-P-1009-01V
			*BA49.10-P-1010-01V
			*BA49.10-P-1011-01V
			*BA49.10-P-1012-01V
			*BA49.10-P-1013-01V
		Engine 629	*BA14.40-P-1006-02A
			*BA49.10-P-1001-01AA
			*BA49.10-P-1002-01AA
			*BA49.10-P-1003-01AA
			*BA49.10-P-1004-01AA
			*BA49.10-P-1005-01AA
			*BA49.10-P-1007-01AA
		Engine 651	*BA49.10-P-1008-01AA
			*BA49.10-P-1001-01AJ
			*BA49.10-P-1008-01AJ
			*BA49.10-P-1009-01AJ
			*BA49.10-P-1010-01AJ
		Lubricant paste	*BR00.45-Z-1002-06A
	Clean
9	Remove combustion and corrosion residues at connection points
10	Check rubber mount for exhaust system	Check for wear and damage, and replace if necessary.
		Engine 629	*BA49.10-P-1006-01AA
		Engine 642	*BA49.10-P-1010-01V
		Engine 651	*BA49.10-P-1001-01AJ
11	Install in the reverse order
	Checking
12	Check installation position and unobstructed movement of all parts of the exhaust system
	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
13	Test engine run and check exhaust system for leakage

EXHAUST AFTERTREATMENT, BLUE TEC

Number	Designation		Engine 642 with code U42
BA14.40-P-1006-02A	Temperature sensor for exhaust temperature measurement upstream of SCR catalytic converter	Nm	45

EXHAUST SYSTEM

Number	Designation		Engine 642 in model 221
BA49.10-P-1001-01V	Nut connecting front exhaust system to bracket	Nm	20
BA49.10-P-1002-01V	Bolt connecting bracket for front exhaust system to transmission	Nm	20
BA49.10-P-1003-01V	Nut connecting rear muffler clamp to pipe connection	Nm	35
BA49.10-P-1004-01V	Bolt, primary catalytic converter to bracket	Nm	15
BA49.10-P-1005-01V	Bolt, primary catalytic converter hose clamp to angular pipe	Nm	20
BA49.10-P-1009-01V	Bolt, catalytic converter system hose clamp to exhaust pipe	Nm	35
BA49.10-P-1010-01V	Bolt, exhaust rubber mount to rear axle carrier	Nm	20
BA49.10-P-1011-01V	Bracket, exhaust rubber mount to body	Nm	20
BA49.10-P-1012-01V	Bolt, diesel particulate filter clamp to SCR catalytic converter	Nm	35
BA49.10-P-1013-01V	Bolt, SCR catalytic converter bracket to transmission	Nm	27

EXHAUST SYSTEM

Number	Designation		Engine 629
BA49.10-P-1001-01AA	Nut, brace to rear muffler	Nm	20
BA49.10-P-1002-01AA	Bolt, catalytic converter hose clamp to turbocharger	Nm	20
BA49.10-P-1003-01AA	Nut, diesel particulate filter flange connection to rear muffler	Nm	15
BA49.10-P-1004-01AA	Nut, catalytic converter to transmission bracket	Nm	20
BA49.10-P-1005-01AA	Bolt, diesel particulate filter bracket to transmission	Nm	20
BA49.10-P-1006-01AA	Bolt, exhaust rubber mount to rear axle carrier or frame floor assembly	Nm	20
BA49.10-P-1007-01AA	Bolt, rubber mount bracket to frame floor	Nm	20
BA49.10-P-1008-01AA	Bolt, rear muffler clamp to middle exhaust pipe	Nm	35

EXHAUST SYSTEM

Number	Designation		Engine 651 in model 221
BA49.10-P-1001-01AJ	Bracket, exhaust rubber mount to body	Nm	22
BA49.10-P-1008-01AJ	Bolt, rear muffler clamp to connecting pipe	Nm	35
BA49.10-P-1009-01AJ	Nut, linkage rod at the rear left to rear right	Nm	24
BA49.10-P-1010-01AJ	Fastening for the vibration damper	Nm	22

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1002-06A	Lubricating paste, rubber parts 2.5 kg, DB supply specification 6867.00	A 000 989 01 60