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Home >> Mercedes Benz >> 2021 >> E53 AMG 2D Convertible >> Repair and Diagnosis >> Engine Mechanical >> Exhaust >> Exhaust System - 238 Chassis >> Testing & Repair >> Remove/Install Exhaust System >> Remove/Install Exhaust System - AR49.10-P-7142MSA

Remove/Install Exhaust System - AR49.10-P-7142MSA

Engine 256 In Model 213, 238, 257, 290 

G15378191Courtesy of MERCEDES-BENZ USA
WARNING 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 danger zone. AS49.00-Z-0001-01A 
CAUTION 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
Notice  Notes on self-locking nuts and bolts   AH00.00-P-0001-01KOA
Notice  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
REMOVINGINSTALLING Remove/install     
1 Remove center and rear lower Engine compartment lining. Engine 256.9 in model 213, 238 AR61.20-P-1105LWE
    Engine 256.9 in model 257 AR61.20-P-1105FR
    Engine 256.9 in model 290
INSTALLATION IMPORTANT Only install center and rear lower rear Engine compartment paneling again after leak test.		 AR61.20-P-1105FRX
2 Remove left and right underfloor paneling. Engine 256.9 in model 213, 238 AR61.30-P-1001LWE
    Engine 256.9 in model 257, 290 AR61.30-P-1001FR
3 Remove center reinforcement. TORQUE SPECIFICATION Bolt, center reinforcement to frame floor assembly *BA61.10-P-1003-01L 
4 Remove rear diagonal struts. Engine 256 in model 213.2, 238.4, 290  
    Engine 256 in model 290 AR61.10-P-5142FRX
    Engine 256 in model 238.4 AR61.10-P-5142LWP
5 Release and disconnect left exhaust gas flap actuator motor electrical connector (M16/53) and place electric line to one side. Engine 256.9 in model 213, 238, 257, 290 with code U78 (AMG sports exhaust system)  
6 Release and disconnect right exhaust gas flap actuator motor electrical connector (M16/54) and place electric line to one side. Engine 256.9 in model 213, 238, 257, 290 with code U78 (AMG sports exhaust system)  
7 Support exhaust system(3).    
REFER TO SPECIAL TOOLS 000 588 11 62 00 Major assembly mount   WS01.00-P-0092B
REFER TO SPECIAL TOOLS 000 588 10 62 00 Support plate   WS26.00-P-3309B
8 Remove clamp(1). INSTALLATION IMPORTANT Replace clamp(1).
TORQUE SPECIFICATION Clamp at catalytic converter and front exhaust system		 *BA49.10-P-1002-02P 
9 Unbolt nut (2). TORQUE SPECIFICATION Nut, decoupling element for front exhaust system to bracket *BA49.10-P-1010-02P 
10 Remove elastomer bearings(4) from exhaust system (3). INSTALLATION IMPORTANT Wet elastomer bearing (4) with lubricant.
Lubricant, rubber assembly 1 L		 *BR00.45-Z-1010-06A 
11 Remove the exhaust system (3).    
REFER TO SPECIAL TOOLS 000 588 11 62 00 Major assembly mount   WS01.00-P-0092B
REFER TO SPECIAL TOOLS 000 588 10 62 00 Support plate IMPORTANT Aid of helper required. WS26.00-P-3309B
12 Remove front bracket of exhaust system(3). When replacing the exhaust system(3).
TORQUE SPECIFICATION Screw, bracket for decoupling element to front exhaust system		 *BA49.10-P-1009-02P 
INSPECT Check     
13 Check elastomer bearings(4) and front decoupling element for damage and wear and replace if necessary. TORQUE SPECIFICATION Nut, decoupling element for front exhaust system to bracket *BA49.10-P-1010-02P 
CLEAN Clean     
14 Remove combustion and corrosion residue at connecting points.    
15 Install in the reverse order.    
16 Check installation position and unobstructed movement of exhaust system(3) and correct if necessary.    
WARNING 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
17 Perform Engine test run and check exhaust system(3) for leak tightness.    
18 Install center and rear lower Engine compartment lining. Engine 256.9 in model 213, 238 AR61.20-P-1105LWE
    Engine 256.9 in model 257 AR61.20-P-1105FR
    Engine 256.9 in model 290 AR61.20-P-1105FRX
EXHAUST SYSTEM

Number Designation Model 213 with engine 256 Model 238 with engine 256
BA49.10-P-1002-02P Clamp at catalytic converter and front exhaust system Nm 25 25
EXHAUST SYSTEM

Number Designation Model 257 with engine 256 Model 290 with engine 256
BA49.10-P-1002-02P Clamp at catalytic converter and front exhaust system Nm 25 25
EXHAUST SYSTEM

Number Designation Model 213 with engine 256 Model 238 with engine 256
BA49.10-P-1009-02P Screw, bracket for decoupling element to front exhaust system Nm 20 20
EXHAUST SYSTEM

Number Designation Model 257 with engine 256 Model 290 with engine 256
BA49.10-P-1009-02P Screw, bracket for decoupling element to front exhaust system Nm 20 20
EXHAUST SYSTEM

Number Designation Model 213 with engine 256 Model 238 with engine 256
BA49.10-P-1010-02P Nut, decoupling element for front exhaust system to bracket Nm 23 23
EXHAUST SYSTEM

Number Designation Model 257 with engine 256 Model 290 with engine 256
BA49.10-P-1010-02P Nut, decoupling element for front exhaust system to bracket Nm 20 20
FRAME FLOOR ASSEMBLY

Number Designation Model 213 Model 238
BA61.10-P-1003-01L Bolt, center reinforcement to frame floor assembly M10 Nm 23 23
M6 Nm 8 8
FRAME FLOOR ASSEMBLY

Number Designation Model 257 Model 290
BA61.10-P-1003-01L Bolt, center reinforcement to frame floor assembly M10 Nm 23 23
M6 Nm 8 8
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1010-06A Lubricant, rubber assembly 1 L A 000 989 03 67
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