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Home >> Mercedes Benz >> 2023 >> GLA250 Base >> Repair and Diagnosis >> Engine Mechanical >> Exhaust >> Exhaust System -- 247 Chassis >> Testing & Repair >> Remove/Install Exhaust System Downstream Of Catalytic Converter >> Remove/Install Exhaust System Downstream Of Catalytic Converter - AR49.10-P-7286MFG

Remove/Install Exhaust System Downstream Of Catalytic Converter - AR49.10-P-7286MFG

Engine 139 in model 118, 177, 247 

MODIFICATION NOTES

21.09.2020 Remove AMG Sound Package sensor (B28/39), added.    
G16050321Courtesy of MERCEDES-BENZ USA

Shown on model 177 

G16050322Courtesy of MERCEDES-BENZ USA

Shown on model 177 

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 avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
Notice  Notes on self-locking nuts and bolts   AH00.00-P-0001-01KOA
REMOVINGINSTALLING Remove/install     
1 Remove side underfloor paneling.   AR61.30-P-1001MFA
2 Release tailpipe trims (2) on left and right from bumper and slide back.    
3 Release and disconnect electrical connector (3) at exhaust gas flap controller (M16/57).    
4 Remove AMG Sound Package sensor (B28/39) from exhaust system downstream of catalytic converter and place to one side with lines attached.   AR49.10-P-0012MFG 
5 Release clamp (4). TORQUE SPECIFICATION Clamp, exhaust pipe to catalytic converter *BA49.10-P-1005-02X 
6 Remove the screws (5). TORQUE SPECIFICATION Screw, strut to frame floor assembly *BA61.10-P-1006-01N 
7 Unscrew bolts (6) and remove strut (7). TORQUE SPECIFICATION Screw, center cross strut (rear) to frame floor assembly *BA61.10-P-1002-01N 
8 Support exhaust system downstream of catalytic converter (1).    
REFER TO SPECIAL TOOLS 000 588 23 62 00 Mounting plate   WS26.00-P-0415B
REFER TO SPECIAL TOOLS 000 588 24 62 00 Major assembly mount   WS01.00-P-0253B
9 Detach elastomer bearings (8). SPECIAL TOOL Pliers Fig 1
10 Remove bolts (9) and remove front strut (10). TORQUE SPECIFICATION Screw, center cross strut (front) to frame floor assembly *BA61.10-P-1001-01N 
11 Pull out exhaust system downstream of catalytic converter (1) from bracket (12) and remove. IMPORTANT Aid of helper required.  
12 Remove clamp (4). INSTALLATION IMPORTANT Replace clamp (4) and seal.  
13 Unscrew nuts (14) and remove bracket (12) from front axle carrier. INSTALLATION IMPORTANT Replace bracket (12).
Wet elastomer bearings (11) with Teflon spray.
Teflon spray, art. No.K007.1
*BR00.45-Z-1041-06A 
    TORQUE SPECIFICATION Nut, center exhaust system holder to front axle carrier *BA49.10-P-1002-02X 
14 Remove combustion and corrosion residues.    
15 Check elastomer bearing (8, 13) for damage and replace if necessary.    
16 Install in the reverse order.    
INSPECT Check     
17 Check installation position and clearance of exhaust system downstream of catalytic converter (1) 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
18 Perform engine test run to check exhaust system for leaks.    
EXHAUST SYSTEM

Number Designation Engine 139 in model 118, 177, 247
BA49.10-P-1002-02X Nut, center exhaust system holder to front axle carrier Nm 20
EXHAUST SYSTEM

Number Designation Engine 139 in model 118, 177, 247
BA49.10-P-1005-02X Clamp, exhaust pipe to catalytic converter Nm 25
FRAME FLOOR ASSEMBLY

Number Designation Model 118, 177, 247
BA61.10-P-1001-01N Screw, center cross strut (front) to frame floor assembly M10 Nm 30
FRAME FLOOR ASSEMBLY

Number Designation Model 118, 177, 247
BA61.10-P-1002-01N Screw, center cross strut (rear) to frame floor assembly M10 Nm 30
FRAME FLOOR ASSEMBLY

Number Designation Model 118, 177, 247
BA61.10-P-1006-01N Screw, strut to frame floor assembly M10 Nm 45
Fig 1: Identifying Pliers (453 589 00 37 00)
G16050323Courtesy of MERCEDES-BENZ USA
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1041-06A Teflon spray, art. No.K007.1 Carl Roth
GmbH & Co KG
Schoemperlenstr. 1-5
76185 Karlsruhe
Germany
Tel. +49 721 5606-0
Fax +49 721 5606-149
http://www.carl-roth.de