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Check visible area of poly-V belt for wear - AP13.22-P-1352EW

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ENGINE 156, 157, 271, 272, 273, 274, 276, 278, 642, 651 in MODEL 212 

ENGINE 157, 274, 276, 278, 642, 651 in MODEL 218 

ENGINE 157, 276, 277, 278, 279, 642, 651 in MODEL 222 

ENGINE 157, 276, 278, 279 in MODEL 231 

ENGINE 157, 276, 278, 642, 651 in MODEL 166 

ENGINE 157, 278, 279 in MODEL 217 

ENGINE 271, 272, 273, 274, 276, 278, 642, 651 in MODEL 207 

Fig 1: Checking Poly-V Belt
G09974957Courtesy of MERCEDES-BENZ USA
  Preparatory activity     
1 Open engine hood and raise to vertical position MODEL 166, 207, 212, 217, 218, 222, 231  
REFER TO TESTING & REPAIR   MODEL 207, 212 with CODE U60 (Pedestrian protection)
IMPORTANT MODEL 207, 212 with CODE U60 (Pedestrian protection)
To move engine hood to upright position: 
Detach left and right clamping levers at the upper left and right hinges.
AR88.40-P-1000EW
INSPECT Check     
2 Check poly-V belt (1) for wear and damage at visible points and compare with damage profiles   AP13.22-P-1351-01A
If wear or damage is present:

Replace the poly-V belt (1), subject to a separate repair order.
REMOVING Remove     
3.1 Remove bottom engine compartment paneling MODEL 207, 212, 218 with gasoline engine;
MODEL 217, 222, 231
 
REFER TO TESTING & REPAIR MODEL 207, 212, 218 AR61.20-P-1105EW
REFER TO TESTING & REPAIR MODEL 217, 222 AR61.20-P-1105LF
REFER TO TESTING & REPAIR MODEL 231 AR61.20-P-1105RK
3.2 Remove bottom sections of soundproofing Model 207, 212, 218 with diesel engine  
REFER TO TESTING & REPAIR     AR94.30-P-5300EW
3.3 Remove center underfloor paneling MODEL 166  
REFER TO TESTING & REPAIR     AR61.30-P-1001GQ
INSPECT Check     
4 Check poly-V-belt (1) for wear and damage at visible points when vehicle is raised, and compare with damage profiles   AP13.22-P-1351-01A
If wear or damage is present:

Replace the poly-V belt (1), subject to a separate repair order.
INSTALLING Install     
5.1 Install lower engine compartment paneling MODEL 207, 212, 218 with gasoline engine;
MODEL 217, 222, 231
 
REFER TO TESTING & REPAIR MODEL 207, 212, 218 AR61.20-P-1105EW
REFER TO TESTING & REPAIR MODEL 217, 222 AR61.20-P-1105LF
REFER TO TESTING & REPAIR MODEL 231 AR61.20-P-1105RK
5.2 Install bottom section of soundproofing Model 207, 212, 218 with diesel engine  
REFER TO TESTING & REPAIR     AR94.30-P-5300EW
5.3 Install center underfloor paneling MODEL 166  
REFER TO TESTING & REPAIR     AR61.30-P-1001GQ
6 Close engine hood MODEL 166, 207, 212, 217, 218, 222, 231  
REFER TO TESTING & REPAIR MODEL 207, 212 with CODE U60 (Pedestrian protection)
NOTES MODEL 207, 212 with CODE U60 (Pedestrian protection) Before closing the engine hood:  Mount left and right clamping levers at the upper left and right hinges.
To ensure correct operation of pedestrian protection.
AR88.40-P-1000EW