Remove/Install Exhaust - AR49.10-P-7142MRH

Engine 264 in model 213, 238, 257 

Fig 1: Exhaust System Components Location - Engine 264 In Model 213 (Shown In Model 238 Except Code 598)

Courtesy of MERCEDES-BENZ USA

Shown on engine 264 in model 238 except code 598 (Gasoline particulate filter (GPF) with sensor system) 

Courtesy of MERCEDES-BENZ USA

Shown on engine 264 in model 238 with code 598 (Gasoline particulate filter (GPF) with sensor system) 

	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 of 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
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	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
	Note on calculation of tightening torque when using insertion or socket tools with various effective lengths		AH00.00-P-0015-01CW
	Remove/install
1	Remove center and rear sections of lower engine compartment lining.	Engine 264 in model 213, 238	AR61.20-P-1105LWE
		Engine 264 in model 257 Only install center and rear lower rear engine compartment paneling again after leak test.	AR61.20-P-1105FR
2	Remove left and right underfloor paneling.	Engine 264 in model 213, 238	AR61.30-P-1001LWE
		Engine 264 in model 257	AR61.30-P-1001FR
3	Remove rear diagonal struts.	Engine 264 in model 213.2, 238.4	AR61.10-P-5142LWP
4	Remove rear reinforcement.	Bolt, rear reinforcement to frame floor assembly	*BA61.10-P-1004-01L
5	Remove temperature sensor upstream of gasoline particulate filter (B163/4) and place to one side.	Engine 264 in model 213, 238, 257 with code 598 (Gasoline particulate filter (OPF) with sensor system)	AR07.04-P-0070MRH
6	Unscrew union nuts (5) and place lines to one side.	Engine 264 in model 213, 238, 257 with code 598 (Gasoline particulate filter (OPF) with sensor system) Coat thread with heat-resistant lubricating paste. Paste, hot lubrication 1 kg, DBL 6879.20	*BR00.45-Z-1005-06A
		Union nut, line, differential pressure sensor, gasoline particulate filter	*BA07.04-P-1003-02B
		Box wrench bit	Fig 2
7	Disconnect electrical connector at left exhaust gas flap actuator motor (M16/53).
8	Support exhaust system (3). 000 588 11 62 00 Major assembly mount		WS01.00-P-0092B
	000 588 10 62 00 Support plate		WS26.00-P-3309B
9	Unscrew screw/bolt (6).	Engine 264 in model 213, 238, 257 with code 598 (Gasoline particulate filter (OPF) with sensor system) Engine 264 in model 213, 257 with code 598 (Gasoline particulate filter (OPF) with sensor system) Screw, bracket of pressure line to gasoline particulate filter	*BA49.10-P-1017-02P
		Engine 264 in model 238 with code 598 (Gasoline particulate filter (OPF) with sensor system) Screw, bracket of pressure line to gasoline particulate filter	*BA49.10-P-1016-02M
10	Remove clamp (1).	Replace clamp (1). Engine 264 in model 238Bolt, exhaust	*BA49.10-P-1002-02M
		system clamp to catalytic converter Engine 264 in model 213, 257Clamp at catalytic converter and front exhaust system	*BA49.10-P-1002-02P
11	Unscrew nut of decoupling element from bracket (2).	Engine 264 in model 213, 257Nut, decoupling element for front exhaust system to bracket	*BA49.10-P-1010-02P
		Engine 264 in model 238Nut, decoupling element for front exhaust system to bracket	*BA49.10-P-1008-02M
12	Remove elastomer bearings (4) from exhaust system (3).	Lightly wet elastomer bearings (4) with lubricant. Lubricant, rubber assembly 1 l	*BR00.45-Z-1010-06A
13	Remove exhaust system (3). 000 588 11 62 00 Major assembly mount		WS01.00-P-0092B
	000 588 10 62 00 Support plate	Helper required.	WS26.00-P-3309B
	Check
14	Check decoupling element for damage and wear.	If complaints are present ↓ Replace decoupling element. Engine 264 in model 213, 257Nut, decoupling element for front exhaust system to bracket	*BA49.10-P-1010-02P
		Engine 264 in model 238Nut, decoupling element for front exhaust system to bracket	*BA49.10-P-1008-02M
15	Check elastomer bearings (4) for damage and wear.	If complaints are present, ↓ Replace elastomer bearing (4). Lightly wet elastomer bearings (4) with lubricant. Lubricant, rubber assembly 1 l	*BR00.45-Z-1010-06A
	Clean
16	Remove combustion and corrosion residues from separating points.
17	Install in the reverse order.
18	Check installation position and for unobstructed movement of exhaust system (3).	If complaints are present ↓ Correct installation position of exhaust system (3).
	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
19	Perform engine test run and check exhaust system (3) for leak tightness.
20	Install center and rear lower engine compartment lining.	Engine 264 in model 213, 238	AR61.20-P-1105LWE
		Engine 264 in model 257	AR61.20-P-1105FR

Fig 2: Identifying Box Wrench Bit (000 589 70 03 00)

Courtesy of MERCEDES-BENZ USA