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Home >> Mercedes Benz >> 2021 >> C63 AMG 2D Convertible >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Timing -- 205 Chassis >> Testing & Repair >> Remove/Install Tensioning Rails On Secondary Chain Drive - AR05.10-P-8129MNA

Remove/Install Tensioning Rails On Secondary Chain Drive - AR05.10-P-8129MNA

Engine 176 in model 463 

up to model year 2019 

Engine 177 in model 205 

Shown on ENGINE 177 

Fig 1: Tensioning Rails On Secondary Chain Drive Component Location - Model 205 W/ Engine 177
G14814098Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
1 Remove camshaft positioner of right intake camshaft. To remove tensioning rail (1). AR05.20-P-7204MNA 
2 Remove camshaft positioner of left exhaust camshaft. To remove the tensioning rail (3). AR05.20-P-7204MNA 
3 Remove tensioning rail bolt (2). To remove tensioning rail (1).  
    SPECIAL TOOL Threaded bolt Fig 2
    SPECIAL TOOL Impact extractor Fig 3
4 Remove tensioning rail bolt (4). To remove the tensioning rail (3).  
    SPECIAL TOOL Threaded bolt Fig 2
    SPECIAL TOOL Impact extractor Fig 3
5 Remove tensioning rail (1) or tensioning rail (3) upward.    
6 Check tensioning rail (1) or tensioning rail (3) for wear, galling, and damage and replace tensioning rail (1) or tensioning rail (3) if necessary.    
7 Install in the reverse order.    
INSPECT Check     
8 Check engine oil level and correct if necessary.    
REFER TO MAINTENANCE   Engine 176 in model 463.234/239/255 up to model year 2019 AP18.00-P-0101GGE
REFER TO MAINTENANCE   Engine 177 in model 205 AP18.00-P-0101D
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
9 Perform engine test run and check engine in terms of leak tightness while engine is running    
Fig 2: Identifying Threaded Bolt (102 589 00 34 00)
G12816584Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Impact Extractor (116 589 20 33 00)
G11972652Courtesy of MERCEDES-BENZ USA