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Home >> Mercedes Benz >> 2021 >> G63 AMG >> Repair and Diagnosis >> Engine Mechanical >> Exhaust >> Exhaust System - 463 Chassis >> Testing & Repair >> Remove/Install Right Catalytic Converter >> Remove/Install Right Catalytic Converter - AR49.20-P-0102XGA

Remove/Install Right Catalytic Converter - AR49.20-P-0102XGA

Engine 176 in model 463 

as of model year 2019 

G13668835Courtesy of MERCEDES-BENZ USA
G13668836Courtesy of MERCEDES-BENZ USA
G13668837Courtesy of MERCEDES-BENZ USA
G13668838Courtesy of MERCEDES-BENZ USA
G13668839Courtesy of MERCEDES-BENZ USA

Show on firewall in front right wheel arch 

G13668840Courtesy 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 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 self-locking nuts and bolts   AH00.00-N-0001-01A
  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
  Remove/install     
1 Remove automatic transmission with torque converter. Engine 176 in model 463 with transmission 725.0
as of model year 2019
AR27.10-P-0500XGA
    INSTALLATION IMPORTANT : Only install lower engine compartment paneling after leak test.  
2 Remove clamps (15, 17) from right rear muffler and left rear muffler. INSTALLATION NOTES :
Exhaust system must be aligned so that it is free of tension before tightening bolted connections.
Otherwise, leaks in the exhaust system will occur.
INSTALLATION IMPORTANT : Install new clamps (15, 17).
 
    TORQUE SPECIFICATION Bolt, clamp for catalytic converter to rear muffler *BA49.10-P-1009-02F 
3 Secure right rear muffler and left rear muffler against falling down.    
4 Unscrew nuts of the brackets (16, 18) of the left catalytic converter (13) and right catalytic converter (14) from the frame. TORQUE SPECIFICATION Nut to catalytic converter bracket (to frame) *BA49.10-P-1006-02F 
5 Remove the right-hand fender liner in the front fender.   AR88.10-P-1300XG
6 Remove left air filter housing.   AR09.10-P-1151XGA
7 Remove the oxygen sensor on the right upstream of the catalytic converter (G3/4).   AR07.04-P-0083XGA
8 Remove lambda sensor on right downstream of catalytic converter (G3/6).   AR07.04-P-0084XGA
9 Remove screws (1) and remove heat shield (2) upward. TORQUE SPECIFICATION Bolt, upper heat shield to bracket/side heat shield *BA09.40-P-1006-01ZA 
10 Remove screws (4) and remove heat shield (3). TORQUE SPECIFICATION Bolt, rear heat shield bracket to crankcase *BA09.40-P-1005-01ZA 
    TORQUE SPECIFICATION Bolt, upper heat shield to bracket/side heat shield *BA09.40-P-1006-01ZA 
11 Remove clamps (5) of the left catalytic converter (13) and right catalytic converter (14).   AR09.40-P-6018-01MNA
    INSTALLATION NOTES :
Observe alignment of the clamps (5). Leaks can occur otherwise.
INSTALLATION IMPORTANT : Replace clamps (5).
TORQUE SPECIFICATION Screw/bolt, catalytic converter clamp to exhaust gas turbocharger
*BA49.10-P-1001-02F 
12 Remove screws (8). TORQUE SPECIFICATION Bolt, bracket to catalytic converter *BA49.10-P-1005-02F 
13 Remove bolts_(7). TORQUE SPECIFICATION Engine 176 in model 463
as of model year 2019 Screw/bolt, catalytic converter bracket to bracket
*BA49.10-P-1004-02F 
14 Remove bracket (6) upward.    
15 Remove screws (10) from bracket (9). TORQUE SPECIFICATION Bolt, bracket for catalytic converter to crankcase *BA49.10-P-1003-02F 
16 Remove bracket (9).    
17 Remove screws (12) from bracket (11). TORQUE SPECIFICATION Bolt, rear heat shield bracket to crankcase *BA09.40-P-1005-01ZA 
18 Remove bracket (11).    
19 Secure left catalytic converter (13) against falling down.    
20 Remove screws (21) of the heat shield (20).    
21 Remove heat shield (20).    
22 Remove right catalytic converter (14).    
23 Remove combustion and corrosion residues on flange connections.    
24 Install in the reverse order.    
25 Check installation position and unobstructed movement of the left catalytic converter (13) and right catalytic converter (14). If there is a problem,

realign left catalytic converter (13) and right catalytic converter (14).
 
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
26 Perform engine test run to check exhaust system for leaks.    
27 Install lower engine compartment lining.   AR61.20-P-1105XG
TURBOCHARGER

Number Designation Engine 176
BA09.40-P-1005-01ZA Bolt, rear heat shield bracket to crankcase Nm 9
TURBOCHARGER

Number Designation Engine 176
BA09.40-P-1006-01ZA Bolt, upper heat shield to bracket/side heat shield Nm 9
EXHAUST SYSTEM

Number Designation Engine 176 in model 463 up to model year 2019 Engine 176 in model 463 as of model year 2019
BA49.10-P-1001-02F Screw/bolt, catalytic converter clamp to exhaust gas turbocharger M6 Nm 8 8
M8 Nm 20 20
EXHAUST SYSTEM

Number Designation Engine 176 in model 463 up to model year 2019 Engine 176 in model 463
as of model year 2019
BA49.10-P-1003-02F Bolt, bracket for catalytic converter to crankcase Nm 20 20
EXHAUST SYSTEM

Number Designation Engine 176 in model 463 up to model year 2019 Engine 176 in model 463
as of model year 2019
BA49.10-P-1004-02F Screw/bolt, catalytic converter bracket to bracket Nm 25 25
EXHAUST SYSTEM

Number Designation Engine 176 in model 463 up to model year 2019 Engine 176 in model 463
as of model year 2019
BA49.10-P-1005-02F Bolt, bracket to catalytic converter Nm 20 20
EXHAUST SYSTEM

Number Designation Engine 176 in model 463 up to model year 2019 Engine 176 in model 463
as of model year 2019
BA49.10-P-1006-02F Nut to catalytic converter bracket (to frame) Stage 1 Nm 10 10
Stage 2 Nm - 35
EXHAUST SYSTEM

Number Designation Engine 176 in model 463 up to model year 2019 Engine 176 in model 463
as of model year 2019
BA49.10-P-1009-02F Bolt, clamp for catalytic converter to rear muffler Nm - 17