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Home >> Mercedes Benz >> 2002 >> C240 Automatic >> Repair and Diagnosis >> Engine Mechanical >> Exhaust >> Exhaust System -- 203 Chassis >> Testing & Repair >> Removing/installing the complete exhaust system - AR49.10-P-7000PR

Removing/installing the complete exhaust system - AR49.10-P-7000PR

ENGINE 111.951 in MODEL 203.035 /235 /735 

ENGINE 111.955 in MODEL 203.045 /245 /745 

ENGINE 111.981 in MODEL 203.747 

Fig 1: Identifying Complete Exhaust System Remove/Install Components - Engine 111.981 In Model 203.747
G04735053
REMOVINGINSTALLING Remove/Install    
1 Remove engine compartment paneling   AR61.20-P-1105P
2 Detach connector of O2 sensor upstream TWC (G3/2x1)    
3 Remove shield (1) above the catalytic converter IMPORTANT To do this, press the electrical line of O2 sensor downstream TWC (G3/1) out of the bracket.  
4 Partly loosen the left floor cover (2)    
5 Disconnect O2 sensor downstream TWC [KAT] connector (G3/1x1) IMPORTANT To do this, pull left floor cover (2) down a little way.  
6 Unscrew front exhaust system (3) from exhaust manifold IMPORTANTInstallation:  Replace bolts (4).
IMPORTANT Inspect the rivet bushes in exhaust manifold, replace if necessary. See ↓
 
    Replace rivet bushes in exhaust manifold AR49.10-P-5531-01DA 
    TORQUE SPECIFICATION Bolt of flange connection to exhaust pipes or exhaust manifold *BA49.10-P-1005-01F 
7 Support the exhaust system.    
8 Unscrew the nuts (5) on bracket (6) IMPORTANTInstallation:  Replace thread plate (7) and nuts (5).  
    TORQUE SPECIFICATION Self-locking nuts on front exhaust pipe *BA49.10-P-1004-01F 
9 Remove bracket (9) for the exhaust system on the underbody TORQUE SPECIFICATION Bolt of exhaust system to underbody *BA49.10-P-1006-01F 
10 Remove the complete exhaust system IMPORTANTInstallation:  Check rubber mount (8) and bracket (9), replace if necessary. Install exhaust system free of tension.  
REFER TO FORMS Notes on disposing of catalytic converters For vehicles with catalytic converter technology code (620a) OS49.10-P-1000-01A 
11 Install in the reverse order    
TORQUE SPECIFICATION EXHAUST SYSTEM

Number Designation Engine 111 in model 203
BA49.10-P-1004-01F Self-locking nut to front exhaust pipe Nm 20
BA49.10-P-1005-01F Bolt of flange connection to exhaust pipes or exhaust manifold Nm 20
BA49.10-P-1006-01F Bolt of exhaust system to underbody Nm 20