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Home >> Mercedes Benz >> 2007 >> C350 Base, Automatic >> Repair and Diagnosis >> Engine Mechanical >> Exhaust >> Exhaust System -- 203 Chassis >> Testing & Repair >> Remove/install exhaust system complete - AR49.10-P-7000QB

Remove/install exhaust system complete - AR49.10-P-7000QB

ENGINE 272.920 in MODEL 203.052 /252 /752 

ENGINE 272.940 in MODEL 203.054 /254, 209.354 /454 

ENGINE 272.960 in MODEL 203.056 /256 /756, 209.356 /456 

ENGINE 272.970 in MODEL 203.087 /287 

ENGINE 272.941 in MODEL 203.092 /292 

ENGINE 273 in MODEL 209 

Fig 1: Identifying Complete Exhaust System Remove/Install Components - Engine 272.920 In Model 203.052 /252 /752, Engine 272.940 In Model 203.054 /254, 209.354 /454 & Engine 272.941 In Model 203.092 /292 (1 Of 2)
G04735057
Fig 2: Identifying Complete Exhaust System Remove/Install Components - Engine 272.920 In Model 203.052 /252 /752, Engine 272.940 In Model 203.054 /254, 209.354 /454 & Engine 272.941 In Model 203.092 /292 (2 Of 2)
G04735058
REMOVINGINSTALLING Remove/install    
DANGER Risk of death  caused by vehicle slipping or toppling off the lifting platform. Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer. AS00.00-Z-0010-01A
DANGER Risk of injury  to skin and eyes caused by handling hot or glowing objects. Wear safety gloves, protective clothing and safety glasses, if necessary. AS00.00-Z-0002-01A
DANGER 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
1 Raise vehicle with lifting platform   AR00.60-P-1000P
2 Remove bottom engine compartment paneling   AR61.20-P-1105P
3 Remove left rear diagonal strut Model 209.4
IMPORTANTInstallation:  The diagonal struts must only be built-in, if the vehicle is standing with the wheels on the ground.
 
    TORQUE SPECIFICATION *BA62.30-P-1004-01A 
4 Remove steering heat shield below catalytic converter on the left Model 203.087 /092 /287 /292  
5 Unclip electrical connectors and electrical lines for O2 sensors from the retaining clamps    
6 Disconnect electrical connectors for O2 sensors    
7 Remove catalytic converters from exhaust manifolds by removing bolts (1) IMPORTANTInstallation:  Clean connecting points of combustion and corrosion residues, replace bolts (1). Check rivet nuts in exhaust manifolds and if required: ↓  
    Replace rivet nuts in exhaust manifold. AR49.10-P-5531-01DA 
    TORQUE SPECIFICATION *BA49.10-P-1001-01Y 
8 Support exhaust system with transmission jack and transmission platform    
9 Loosen bracket (2) on transmission by releasing bolts (3) TORQUE SPECIFICATION *BA49.10-P-1005-01Y 
10 Remove bracket (2) from catalytic converter IMPORTANTInstallation:  Check threaded plate (4), replace if necessary. Replace nuts (5).  
    TORQUE SPECIFICATION *BA49.10-P-1006-01Y 
11 Push together bracket (2)    
12 Remove exhaust system bracket (6) from underbody TORQUE SPECIFICATION *BA49.10-P-1004-01Y 
13 Remove complete exhaust system INSPECTInstallation:  Check rubber mount (7) and bracket (6); replace if necessary.  
REFER TO FORMS Notes on disposing of catalytic converters   OS49.10-P-1000-01A 
14 Install in the reverse order    
INSPECT Checking     
15 Check installation position and clearance of exhaust system IMPORTANT The exhaust system must be mounted free of tension; align exhaust system if necessary.  
DANGER Risk of accident  caused by vehicle starting off by itself when engine is running. Risk of injury  caused by contusions and burns during starting procedure or when working near the engine as it is running Secure vehicle to prevent it from moving by itself.
Wear closed and snug-fitting work clothes.
Do not touch hot or rotating parts.
AS00.00-Z-0005-01A
16 Test run engine and check exhaust system for leaks    
TORQUE SPECIFICATION CROSSMEMBER AND FRONT REINFORCEMENT

Number Designation Model 209.4
BA62.30-P-1004-01A Bolt, diagonal strut Nm 80
TORQUE SPECIFICATION EXHAUST SYSTEM

Number Designation Engine 272 in model 203, 209 Engine 273 in model 209
BA49.10-P-1001-01Y Bolt connecting catalytic converter to exhaust manifold Nm 20 20
BA49.10-P-1004-01Y Nut for exhaust rubber mount bracket Nm 20 20
BA49.10-P-1005-01Y Bolt, catalytic converter bracket to transmission Nm 20 20
BA49.10-P-1006-01Y Nut connecting catalytic converter bracket to catalytic converter Nm 20 20