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Replace Timing Chain - AR05.10-P-7601MFC

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Engine 260 in model 118, 177, 247 

Fig 1: Timing Chain Components Location - Engine 260 In Model 118
G16049421WARNINGCAUTIONREMOVINGSPECIAL TOOLINSPECTREFER TO SPECIAL TOOLSREFER TO SPECIAL TOOLSINSTALLINGSPECIAL TOOLSPECIAL TOOLIMPORTANTCourtesy of MERCEDES-BENZ USA
WARNING Risk of injury.  Moving parts can pinch, crush or, in extreme cases even sever extremities. No parts of the body or limbs should be within the operating area of mechanical components when moving components. AS00.00-Z-0009-01A
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
Notice  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
REMOVING Remove     
1 Remove camshafts together with camshaft positioners.   AR05.20-P-6992MFC 
2 Disconnect timing chain (1).   AR05.10-P-7601-01MRH 
    SPECIAL TOOL Rivet press tool Fig 3
INSPECT Check     
3 Check tensioning rail (2) and slide rails (3, 4) for wear and damage.    
REFER TO SPECIAL TOOLS 000 588 27 21 00 Endoscope If problems exist:

Replace corresponding components.
WS01.00-P-0252B
    replace slide rails (3, 4) AR05.10-P-8480MFC 
    Replace tensioning rail (2) AR05.10-P-8127MFC 
4 Check sprocket of crankshaft for wear and damage.    
REFER TO SPECIAL TOOLS 000 588 27 21 00 Endoscope If problems exist:

Replace sprocket of crankshaft.
WS01.00-P-0252B
      AR01.40-P-8002MFC
5 Check camshaft positioners for wear and damage. If problems exist:

Replace camshaft positioner.
 
INSTALLING Install     
6 Draw in new timing chain (1).   AR05.10-P-7601-04MRH 
    SPECIAL TOOL Assembly element Fig 2
7 Rivet new timing chain (1).   AR05.10-P-7601-02MRH 
    SPECIAL TOOL Rivet press tool Fig 3
8 Install camshafts with camshaft positioners. IMPORTANT Only install cylinder head cover after checking the basic position of the camshafts. AR05.20-P-6992MFC 
Fig 2: Identifying Assembly Element (271 589 09 63 00)
G13743890Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Rivet Press Tool (276 589 00 39 00)
G13743893Courtesy of MERCEDES-BENZ USA