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Home >> Mercedes Benz >> 2007 >> CL550 >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> A/C Compressor >> Air Compressor, Belt Drives -- Cl550 -- 216 Chassis >> Maintenance >> Check visible area of poly-V belt for wear - AP13.22-P-1352SX

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

ENGINE 156, 157, 273, 278 in MODEL 216 

ENGINE 156, 157, 272, 273, 276, 278 in MODEL 221 

Fig 1: Identifying Poly V Belt
G07634325Courtesy of MERCEDES-BENZ USA

Damage diagram 

Fig 2: Poly V Belt Damage Diagram
G07634326Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
DANGER Risk of death  caused by vehicle slipping or toppling off of the lifting platform. Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer. AS00.00-Z-0010-01A
INSPECT Checking     
1 Check poly-V belt (1) at the visible points for wear and compare with damage patterns IMPORTANT Replace poly-V belt (1) if worn: ↓  
Remove/install belt drive components: Engine 272 except 272.974, except 273 AR13.20-P-0001SX 
Engine 276 AR13.20-P-0001MMA
Engines 157, 278
Remove/install poly V-belt:
AR13.20-P-0001MMB
Engine 156 AR13.22-P-1202SMG
Engine 272.974 AR13.22-P-1202SXH
2 Raise vehicle with vehicle lift   AR00.60-P-1000SX
3 Remove bottom engine compartment paneling IMPORTANTInstallation:  Install engine compartment paneling only after completing all maintenance jobs. AR61.20-P-1105SX
INSPECT Checking     
4 Check poly-V belt (1) at the points which are visible when the vehicle is raised and compare with damage patterns IMPORTANT Replace poly-V belt (1) if worn: ↓  
Remove/install belt drive components:
Engine 272 except 272.974, except 273
AR13.20-P-0001SX 
Engine 276 AR13.20-P-0001MMA
Engines 157, 278
Remove/install poly V-belt:
AR13.20-P-0001MMB
Engine 156 AR13.22-P-1202SMG
Engine 272.974 AR13.22-P-1202SXH
5 Install in the reverse order