(Remove/Install Exhaust System - AR49.10-P-7142OGW)

Model 213, 238, 253 with engine 642 

Shown on model 213 

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
	Risk of burn injuries,  suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning  caused by skin contact with solid components of the exhaust.	Wear protective clothing and safety glasses. Use the extraction system. Move people out ol the hazard area.	AS49.00-Z-0001-01A
	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 self-locking nuts and bolts		AH00.00-N-0001-01A
	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
	Remove
1	Remove center and rear section of lower engine compartment paneling	Model 253 with engine 642	AR61.20-P-1105LW
		Model 213, 238 with engine 642	AR61.20-P-1105LWE
2	Remove side underfloor paneling	Model 253 with engine 642	AR61.30-P-1001LW
		Model 213, 238 with engine 642	AR61.30-P-1001LWE
3	Remove reinforcement on rear frame floor assembly		AR14.40-P-2064OGW
4	Remove NOx sensor downstream of diesel particulate filter (6)	Model 213, 238, 253 with engine 642 with code U77 (Diesel Emission control BLUETEC (SCR))
			AR14.40-P-2064OGW
5	Remove NOx sensor downstream of SCR catalytic converter	Model 213, 238, 253 with engine 642 with code U77 (Diesel Emission control BLUETEC (SCR))
			AR14.40-P-2065OGW
6	Remove temperature sensor upstream of SCR catalytic converter	Model 213, 238, 253 with engine 642 with code U77 (Diesel Emission control BLUETEC (SCR))
			AR14.40-P-2011OGW
7	Remove injection nozzle of exhaust gas aftertreatment system and place to one side with lines connected	Model 213, 238, 253 with engine 642 with code U77 (Diesel Emission control BLUETEC (SCR))
			AR14.40-P-2000OGW
8	Support exhaust system (1)
	000 588 10 62 00 Support plate		WS26.00-P-3309B
	000 588 11 62 00 Major assembly mount		WS01.00-P-0092B
9	Remove clamp (2) and sealing ring
10	Remove exhaust system (1) from bracket of decoupling element
11	Remove elastomer bearings (4, 5) at body
12	Remove exhaust system (1) with elastomer bearings (4. 5) downwards
13	Remove combustion and corrosion residues
14	Seal all openings using clean protective covers	Set of protective caps	Fig 1
15	Check elastomer bearings (4, 5) for damage	In case of a complaint ↓ Install new elastomer bearings (4, 5).
	Install
16	Remove all protective covers	Set of protective caps	Fig 1
17	Install exhaust system (1) with elastomer bearings (4. 5)	Model 238 with engine 642Bolt, bracket for suspension for rear exhaust system to body	*BA49.10-P-1014-02J
		Model 253 with engine 642Bolt, bracket for suspension for rear exhaust system to body	*BA49.10-P-1009-02K
		Model 213 with engine 642Bolt, bracket for suspension for rear exhaust system to body	*BA49.10-P-1014-02H
18	Install new clamp (2) and new sealing ring
19	Put on screw/bolts for decoupling element lightly by hand
20	Tighten new clamp (2) slightly by hand
21	Align exhaust system (1) tension-free
22	Tighten screw/bolts of decoupling element on exhaust system	Model 238 with engine 642Bolt, bracket for decoupling element to body/exhaust system at front	*BA49.10-P-1011-02J
		Model 253 with engine 642Bolt, bracket for decoupling element to body/exhaust system at front	*BA49.10-P-1006-02K
		Model 213 with engine 642Bolt, bracket for decoupling element to body/exhaust system at front	*BA49.10-P-1011-02H
23	Tighten clamp	Model 238 with engine 642Clamp to diesel particulate filter and front exhaust system	*BA49.10-P-1003-02J
		Model 253 with engine 642Clamp to diesel particulate filter and front exhaust system	*BA49.10-P-1003-02K
		Model 213 with engine 642Clamp to diesel particulate filter and front exhaust system	*BA49.10-P-1003-02H
24	Attach NOx sensor downstream of SCR catalytic converter	Model 213, 238, 253 with engine 642 with code U77 (Diesel Emission control BLUETEC (SCR))	AR14.40-P-2065OGW
25	Attach injection nozzle of exhaust gas aftertreatment system	Model 213, 238, 253 with engine 642 with code U77 (Diesel Emission control BLUETEC (SCR))	AR14.40-P-2000OGW
26	Attach temperature sensor upstream of SCR catalytic converter	Model 213, 238, 253 with engine 642 with code U77 (Diesel Emission control BLUETEC (SCR))	AR14.40-P-2011OGW
27	Attach NOx sensor downstream of diesel particulate filter (6)	Model 213, 238, 253 with engine 642 with code U77 (Diesel Emission control BLUETEC (SCR))	AR14.40-P-2064OGW
28	Install reinforcement on rear frame floor assembly	Bolt, rear reinforcement to frame floor assembly	*BA61.10-P-1004-01L
29	Install side underfloor paneling	Model 253 with engine 642	AR61.30-P-1001LW
		Model 213, 238 with engine 642	AR61.30-P-1001LWE
30	Install center and rear sections of lower engine compartment paneling	Model 253 with engine 642	AR61.20-P-1105LW
		Model 213, 238 with engine 642	AR61.20-P-1105LWE
	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
31	Carry out an engine test run and check exhaust system for leaktightness

Fig 1: Identifying Set Of Protective Caps (001 589 02 91 00)

Courtesy of MERCEDES-BENZ USA