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Remove/install crankshaft Hall sensor - AR15.12-P-2136MR

ENGINE 274 in MODEL 172, 204, 207 

Fig 1: Identifying Crankshaft Hall Sensor Remove/Install Components
G10247858Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
1 Remove lower engine compartment paneling Engine 274 in model 172 AR61.20-P-1105W
Engine 274 in model 204.9 AR61.20-P-1105CY
Engine 274 in model 204.0/2/3, 207 AR61.20-P-1105EW
2 Remove catalytic converter Engine 274 in model 204.9 AR49.10-P-7100MR
Engine 274 in model 172 AR49.10-P-7142MRE
3 Remove CAT bracket on right crankcase Engine 274 in model 204.9  
4.1 Take out heat shield (1) Engine 274 in model 204.9  
4.2 Remove screw/bolt (1s) and heat shield (1) Engine 274 in model 172, 204.0/2/3, 207  
5 Detach heat grommets from crankshaft Hall sensor (B70) and push to the side at electrical line Engine 274 in model 172, 204.0/2/3, 207  
6 Disconnect electrical connection on crankshaft Hall sensor (B70)    
7 Remove screw/bolt (2) and take out crankshaft Hall sensor (B70) If a sealing ring is installed
INSTALLATION IMPORTANT Replace sealing ring.
 
TORQUE SPECIFICATION Screw/bolt, crankshaft position sensor to crankcase *BA15.10-P-1001-03I 
8 Install in the reverse order    
INSPECT Check     
DANGER 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 an engine test run and check engine for proper function    
POSITION SENSOR

Number Designation Engine 274
BA15.10-P-1001-03I Screw/bolt, crankshaft position sensor to crankcase Nm 9