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(Remove/Install Rear Muffler - AR49.10-P-4952LW)

Engine 274.9, 276 in model 205 

Modification notes

25.04.2017 Remove rear-end floor cover, added. Operation step 3  
25.04.2017 Release and disconnect electrical connector of exhaust flap (5), added. Operation step 6  

Shown on model 205 with code U21 (AMG Performance exhaust system) 

G13772646Courtesy 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 ol the hazard area. 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
  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
REMOVINGINSTALLING Remove/install     
1 Remove underfloor paneling Engine 274.9, 276 in model 205.4  
      AR61.30-P-1001LW
2 Release longitudinal member panels and press aside Engine 274.9, 276 in model 205.4  
      AR88.80-P-6000LW 
3 Remove rear-end floor cover Engine 274.9, 276 in model 205.4  
4 Remove rear diagonal struts Engine 274.9, 276 in model 205.4  
    TORQUE SPECIFICATION Bolt, rear diagonal strut to spare wheel well/body *BA61.10-P-1008-01L 
5 Support rear mufflers (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
6 Release and disconnect electrical connection at exhaust flap (5) Engine 274.9, 276 in model 205
with code U21 (AMG Performance exhaust system)
 
7 Remove elastomer bearings (4) of rear mufflers (3)    
8 Take off clamp (2) INSTALLATION IMPORTANT : Replace clamp (2).  
    TORQUE SPECIFICATION Clamp, rear exhaust system to front exhaust system/rear exhaust system *BA49.10-P-1011-02A 
9 Remove rear mufflers (3)    
10 Separate rear mufflers (3) at separation point (t) with tube cutter When replacing left or right rear muffler (3).
INSTALLATION IMPORTANT : Connect rear mufflers (3) with clamp.
 
    TORQUE SPECIFICATION Clamp, rear exhaust system to front exhaust system/rear exhaust system *BA49.10-P-1011-02A 
INSPECT Check     
11 Check elastomer bearing (4) for wear and damage; replace if necessary    
CLEANING Clean     
12 Remove combustion and corrosion residues at separation points of center exhaust system (1) and rear mufflers (3)    
13 Install in the reverse order    
14 Check installation position and unobstructed movement of rear mufflers (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
15 Carry out an engine test run and check exhaust system for leaktightness    
Exhaust system

Number Designation Engine 274 in model 205 Engine 276 in model 205
BA49.10-P-1011-02A  Clamp, rear exhaust system to front exhaust system/rear exhaust system Nm 22 22
Frame floor assembly

Number Designation Model 205
BA61.10-P-1008-01L  Bolt, rear diagonal strut to spare wheel well/body Nm 70