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Remove/install chain tensioner - AR05.10-P-7800CMG

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ENGINE 156 in MODEL 204, 212 

Fig 1: Chain Tensioner Remove/Install Components
G09974288Courtesy of MERCEDES-BENZ USA
MODIFICATION NOTES

4.9.08 Replace sealing ring by replacing chain tensioner - replaced Step 5    
REMOVINGINSTALLING Remove/install     
1 Detach ground line from battery Model 204 AR54.10-P-0003CW
NOTES Notes on battery   AH54.10-P-0001-01A
2 Remove engine intake air duct and front engine cover NOTES Do not tilt front engine cover, but lift upwards vertically otherwise the retaining lugs can break off.  
3 Remove poly-V belt (3) IMPORTANT The poly-V belt (3) must be removed from the alternator belt pulley (G2) only. AR13.20-P-0001CMG
4 Loosen alternator (G2) and lay down to side with connected lines   AR15.40-P-5032CMG
5 Remove chain tensioner (1) from timing case cover INSTALLATION IMPORTANT Replace chain tensioner (1).  
    TORQUE SPECIFICATION *BA05.10-P-1008-01B 
6 Install in the reverse order    
INSPECT Checking     
7 Check engine oil level and correct    
REFER TO MAINTENANCE Engine oil and filter change Model 204 engine 156 AP18.00-P-0101CMG
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
8 Check for leaks with engine running    
TIMING CHAIN, CHAIN TENSIONER

Number Designation Engine 156
BA05.10-P-1008-01B Chain tensioner to timing case M22 1.5 Nm 75