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Home >> Mercedes Benz >> 2021 >> GLB250 4Matic >> Repair and Diagnosis >> Engine Mechanical >> Exhaust >> Exhaust System - 247 Chassis >> Testing & Repair >> Remove/Install Exhaust System Downstream Of Catalytic Converter - AR49.10-P-7286MFD

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

Engine 260 in model 118, 177, 247 

with code U55 (Multi-link axle) 

Engine 282 in model 118, 177, 247 

with code U55 (Multi-link axle) 

except code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN)) 

MODIFICATION NOTES

17.01.2020 Document completely revised.    
G14689118Courtesy of MERCEDES-BENZ USA

Shown on model 177 with engine 282 

G14689119Courtesy of MERCEDES-BENZ USA

Shown on model 177 with engine 282 

G14689120Courtesy of MERCEDES-BENZ USA

Shown on model 177 with code 772 (AMG styling package - front spoiler, rocker panel and rear apron) with code B26 (AMG aerodynamics package) with code M016 (Uprated engine) with code P60 (AMG Night Package) 

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
REMOVING Remove     
1 Switch off ignition and store transmitter key outside of transmitter range (min. 2 m).    
2 Raise vehicle and secure.   AR00.60-P-1006A
3 Support rear muffler (1).    
REFER TO SPECIAL TOOLS 000 588 10 62 00 Support plate   WS26.00-P-3309B
REFER TO SPECIAL TOOLS 000 588 11 62 00 Major assembly mount   WS01.00-P-0092B
4 Release and disconnect electrical connector (12). Engine 260 in model 118, 177, 247
with code M016 (Uprated engine)
with code U55 (Multi-link axle)
 
5 Remove cover (13). Engine 260 in model 177
with code 772 (AMG styling - Front spoiler, side skirts)
with code B26 (AMG Aerodynamics package)
with code M016 (Uprated engine)
with code U55 (Multi-link axle)
 
6 Remove screws (14) and slide exhaust tailpipes (15) towards rear. Engine 260 in model 118, 177, 247
with code P60 (AMG Night package)
with code U55 (Multi-link axle)
 
7 Remove screws (2).    
8 Remove screw (16).    
9 Remove temperature sensor upstream of gasoline particulate filter (B163/4) and secure on vehicle so that free of tension. Engine 260, 282 in model 118
with code 961 (Exhaust system with OPF, generation 2.0)
with code U55 (Multi-link axle)
except code M005 (Vehicles with 4MATIC/all-wheel drive)
except code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN))
Engine 260, 282 in model 177, 247
with code 598 (Gasoline particulate filter (OPF) with sensor system)
with code U55 (Multi-link axle)
except code M005 (Vehicles with 4MATIC/all-wheel drive)
except code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN))
NOTES Do not crush or kink or subject lines to tension This will otherwise result in damage and function impairments.
AR49.20-P-0009MFD 
10 Remove lines (8) of low-pressure exhaust gas recirculation differential pressure sensor (B28/18) from gasoline particulate filter (9). NOTES Do no kink, crush or subject lines (8) to tension.
This will otherwise result in damage and function impairments.
 
    SPECIAL TOOL Hose clamp pliers Fig 1
11 Seal openings with suitable stop plug. SPECIAL TOOL Record plug Fig 2
12 Remove nut (3). When replacing exhaust system and/or elastomer bearings.  
13 Unscrew screws (5) and remove rear reinforcement (4).    
14 Remove front reinforcement (6).    
15 Remove nuts from bolts (10).    
16 Remove screws (11).    
17 Secure entire exhaust system against falling down, slightly lower rear muffler (1), lift front exhaust system over bolts (10) and remove.    
REFER TO SPECIAL TOOLS 000 588 10 62 00 Support plate   WS26.00-P-3309B
REFER TO SPECIAL TOOLS 000 588 11 62 00 Major assembly mount   WS01.00-P-0092B
    IMPORTANT Aid of helper required.  
INSTALLING Install     
18 Remove combustion and corrosion residues at front flange. IMPORTANT Replace seal at front flange.  
19 Check front and rear elastomer bearing for damage. If the elastomer bearings are damaged,

replace elastomer bearing.
 
20 Lift entire exhaust system, guide front elastomer bearing over bolts (10), support exhaust system on rear muffler (1) and secure against falling down.    
REFER TO SPECIAL TOOLS 000 588 10 62 00 Support plate   WS26.00-P-3309B
REFER TO SPECIAL TOOLS 000 588 11 62 00 Major assembly mount   WS01.00-P-0092B
    IMPORTANT Aid of helper required.  
21 Secure brackets of rear muffler (1) using screws (2) to substructure. TORQUE SPECIFICATION Engine 260 in model 177
with code U55 (Multi-link axle)
Engine 282 in model 118, 177, 247
with code U55 (Multi-link axle)
except code ME08 (Hybrid drive 75-84 kW
VARIANT (INCLUDING PLUGIN)) Bolt, rear exhaust system bracket to body
*BA49.10-P-1010-02Q 
22 Connect and lock electrical connector (12). Engine 260 in model 118, 177, 247
with code M016 (Uprated engine)
with code U55 (Multi-link axle)
 
23 Align exhaust tailpipes (15) and screw in screws (14). Engine 260 in model 118, 177, 247
with code P60 (AMG Night package)
with code U55 (Multi-link axle)
 
24 Install cover (13). Engine 260 in model 177
with code 772 (AMG styling - Front spoiler, side skirts)
with code B26 (AMG Aerodynamics package)
with code M016 (Uprated engine)
with code U55 (Multi-link axle)
 
25 Attach rear reinforcement (4) and slightly tighten screws (5) by hand.    
26 Slightly tighten nut (3) by hand. When replacing exhaust system and/or elastomer bearings.  
27 Slightly tighten screws (11) by hand.    
28 Align exhaust system so that free of tension.    
29 Tighten bolts (5). TORQUE SPECIFICATION Engine 260 in model 118, 177, 247
with code U55 (Multi-link axle)
Engine 282 in model 118, 177, 247
with code U55 (Multi-link axle)
except code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN)) Screw, center cross strut (rear) to frame floor assembly
*BA61.10-P-1002-01N 
30 Fit nut (3). When replacing exhaust system and/or elastomer bearings.  
    TORQUE SPECIFICATION Engine 260 in model 177
with code U55 (Multi-link axle)
Engine 282 in model 118, 177, 247
with code U55 (Multi-link axle)
except code ME08 (Hybrid drive 75-84 kW
VARIANT (INCLUDING PLUGIN)) Nut, elastomer bearing to rear reinforcement
*BA49.10-P-1009-02Q 
31 Tighten screws (11). IMPORTANT Ensure new seal is correctly seated on front flange.  
    TORQUE SPECIFICATION Engine 260 in model 177
with code U55 (Multi-link axle)
Engine 282 in model 118, 177
with code U55 (Multi-link axle)
except code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN)) Bolt, front exhaust system to center exhaust system
*BA49.10-P-1006-02Q 
32 Attach nuts to the bolts (10). TORQUE SPECIFICATION Engine 260 in model 177
with code U55 (Multi-link axle)
Engine 282 in model 118, 177
with code U55 (Multi-link axle)
except code ME08 (Hybrid drive 75-84 kW
VARIANT (INCLUDING PLUGIN)) Nut, center exhaust system holder to front axle carrier
*BA49.10-P-1007-02Q 
33 Attach lines (8) of low-pressure exhaust gas recirculation differential pressure sensor (B28/18) at gasoline particulate filter (9). NOTES Do no kink, crush or subject lines (8) to tension.
This will otherwise result in damage and function impairments.
IMPORTANT Pay attention to installation position.
 
    SPECIAL TOOL Hose clamp pliers Fig 1
34 Screw in screw (16). TORQUE SPECIFICATION M6X1 *BA00.10-P-1002-04A 
35 Coat thread of temperature sensor upstream of gasoline particulate filter (B163/4) with heat-resistant lubricating paste and install temperature sensor upstream of gasoline particulate filter (B163/4) so that free of tension. Engine 260, 282 in model 118
with code 961 (Exhaust system with OPF, generation 2.0)
with code U55 (Multi-link axle)
except code M005 (Vehicles with 4MATIC/all-wheel drive)
except code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN)) Engine 260, 282 in model 177, 247 with code 598 (Gasoline particulate filter (OPF) with sensor system) with code U55 (Multi-link axle) except code M005 (Vehicles with 4MATIC/all-wheel drive)
except code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN))
NOTES Do not crush or kink or subject lines to tension This results in damage and function impairments.
AR49.20-P-0009MFD 
    Paste, hot lubrication 1 kg, DBL 6879.20 *BR00.45-Z-1005-06A 
36 Install front reinforcement (6). TORQUE SPECIFICATION Engine 260 in model 118, 177, 247
with code U55 (Multi-link axle)
Engine 282 in model 118, 177, 247
with code U55 (Multi-link axle) except code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN)) Screw, center cross strut (front) to frame floor assembly
*BA61.10-P-1001-01N 
INSPECT Check     
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
37 Perform engine test run to check exhaust system for leaks.    
38 Release and lower vehicle.   AR00.60-P-1006A
METRIC SCREWS/BOLTS AND NUTS AS PER MBN 10 105, 10 143

Number Designation 8.8 10.9
BA00.10-P-1002-04A M6X1 Nm 9 13
EXHAUST SYSTEM

Number Designation Model 118 with engine 282 Model 177 with engine 260
BA49.10-P-1006-02Q Bolt, front exhaust system to center exhaust system M8 Nm 25 25
EXHAUST SYSTEM

Number Designation Model 177 with engine 282
BA49.10-P-1006-02Q Bolt, front exhaust system to center exhaust system M8 Nm 25
EXHAUST SYSTEM

Number Designation Model 118 with engine 282 Model 177 with engine 260
BA49.10-P-1007-02Q Nut, center exhaust system holder to front axle carrier M8 Nm 20 20
EXHAUST SYSTEM

Number Designation Model 177 with engine 282
BA49.10-P-1007-02Q Nut, center exhaust system holder to front axle carrier M8 Nm 20
EXHAUST SYSTEM

Number Designation Model 118 with engine 282 Model 177 with engine 260
BA49.10-P-1009-02Q Nut, elastomer bearing to rear reinforcement M8 Nm 25 25
EXHAUST SYSTEM

Number Designation Model 177 with engine 282 Model 247 with engine 282
BA49.10-P-1009-02Q Nut, elastomer bearing to rear reinforcement M8 Nm 25 25
EXHAUST SYSTEM

Number Designation Model 118 with engine 282 Model 177 with engine 260
BA49.10-P-1010-02Q Bolt, rear exhaust system bracket to body M8 Nm 20 20
EXHAUST SYSTEM

Number Designation Model 177 with engine 282 Model 247 with engine 282
BA49.10-P-1010-02Q Bolt, rear exhaust system bracket to body M8 Nm 20 20
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
Fig 1: Identifying Hose Clamp Pliers (454 589 00 37 00)
G12939525Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Record Plug (129 589 00 91 00)
G09975019Courtesy of MERCEDES-BENZ USA
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1005-06A Paste, hot lubrication 1 kg, DBL 6879.20 A 000 989 76 51