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Home >> Mercedes Benz >> 2020 >> SLC43 AMG Base >> Repair and Diagnosis >> Engine Mechanical >> Exhaust >> Exhaust System - 172 Chassis >> Testing & Repair >> Remove/Install Right Catalytic Converter - AR49.10-P-5503WA

Remove/Install Right Catalytic Converter - AR49.10-P-5503WA

Engine 276.8 in model 172 

Fig 1: Right Catalytic Converter Components Location - Engine 276.8 In Model 172
G13842210Courtesy of MERCEDES-BENZ USA
WARNING Risk of injury.  Skin or eye injuries may result when handling hot or glowing objects. Wear protective gloves, protective clothing and safety glasses, if necessary. AS00.00-Z-0002-01A
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 Notes on self-locking nuts and bolts   AH00.00-N-0001-01A
REMOVING Remove     
1 Remove lower engine cover   AR61.20-P-1105W
2 Release and disconnect electrical connections (1)    
3 Unclip electrical line (2, 3) on transmission holder    
4 Unscrew nuts (4) and remove bracket (5)    
5 Remove screw/bolt on holder of the right CAT (8)    
6 Detach mounting clamp (6)    
7 Remove screws/bolts (7)    
8 Remove right catalytic converter (8) downwards    
CLEAN Clean     
9 Remove combustion and corrosion residue at separating points    
INSTALLING Install     
10 Replace seals on right catalytic converter (8)    
11 Position right CAT (8) and screw in screw/bolts TORQUE SPECIFICATION Bolt, front exhaust line flange to exhaust line *BA49.10-P-1024-01AI 
12 Mount mounting clamp (6) INSTALLATION IMPORTANT : Replace mounting clamp (6).  
TORQUE SPECIFICATION Bolt, clamp to center muffler/NOx storage catalytic converter *BA49.10-P-1005-01AI 
13 Screw screw/bolt onto holder of the right CAT (8) TORQUE SPECIFICATION Bolt, catalytic converter bracket to catalytic converter bracket *BA49.10-P-1026-01AI 
14 Attach bracket (5) and tighten nuts (4) TORQUE SPECIFICATION Nut, cross connection bracket front exhaust system *BA49.10-P-1019-01AI 
15 Clip electrical line (2, 3) onto transmission holder    
16 Place electrical connections (1) and lock    
INSPECT Check    
17 Check installation position and unobstructed movement of all components of the exhaust system    
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 an engine test run and check exhaust system for leak tightness
19 Install lower engine compartment paneling   AR61.20-P-1105W
EXHAUST SYSTEM

Number Designation Engine 276 in model 172
BA49.10-P-1005-01AI Bolt, clamp to center muffler/NOx storage catalytic converter Nm 35
EXHAUST SYSTEM

Number Designation Engine 276 in model 172
BA49.10-P-1019-01AI Nut, cross connection bracket front exhaust system Nm 20
EXHAUST SYSTEM

Number Designation Engine 276 in model 172
BA49.10-P-1024-01AI Bolt, front exhaust line flange to exhaust line Nm 20
EXHAUST SYSTEM

Number Designation Engine 276 in model 172
BA49.10-P-1026-01AI Bolt, catalytic converter bracket to catalytic converter bracket Nm 20