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Home >> Mercedes Benz >> 2017 >> C300 Base, 2D Convertible >> Repair and Diagnosis >> Engine Mechanical >> Accessory Drive Belts >> Air Compressor, Belt Drives - 205 Chassis >> Maintenance >> Damage Profiles For A Poly-V Belt - AP13.22-P-1351-01A

Damage Profiles For A Poly-V Belt - AP13.22-P-1351-01A

Engine 102, 103, 104, 111, 112, 113, 119, 120, 133, 137, 139, 152, 155, 156, 157, 159, 166, 176, 177, 178, 260, 264, 266, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 281, 282, 285, 602, 603, 604, 605, 606, 607, 608, 611, 612, 613, 626, 628, 629, 640, 642, 646, 647, 648, 651, 654, 656, 668 

NOTES In all cases of damage, do not  reuse the poly-V-belt.

Replace poly-V-belt and the component parts causing damage subject to separate repair order.

Consequential damage can otherwise occur.

Flanks of the poly-V belts worn 

NOTES The poly-V-belts show signs of wear or they are pointed instead of trapezoidal. Look out for non-aligned and damaged belt pulleys.

G12935197Courtesy of MERCEDES-BENZ USA

Tensile cord (brighter points) visible in base of poly-V belt 

G12935198Courtesy of MERCEDES-BENZ USA

The backing of the belt is damaged 

IMPORTANT The surface layer exhibits transverse or longitudinal cracks.

G12935199Courtesy of MERCEDES-BENZ USA

Poly-V belt detached from poly-V belt base 

G12935200Courtesy of MERCEDES-BENZ USA

Fraying of outer cords 

Pay attention to belt pulleys and guide pulleys.

G12935201Courtesy of MERCEDES-BENZ USA

Cord torn out at the side 

Pay attention to belt pulleys and guide pulleys.

G12935202Courtesy of MERCEDES-BENZ USA

Transverse cracks in several poly-V 

G12935203Courtesy of MERCEDES-BENZ USA

Chippings on poly-V belt 

G12935204Courtesy of MERCEDES-BENZ USA

Individual transverse cracks in the poly-V belt 

G12935205Courtesy of MERCEDES-BENZ USA

Dirt or stones embedded in ribs 

Pay attention to belt pulleys and guide pulleys.

G12935206Courtesy of MERCEDES-BENZ USA

Heavy wear and deposits and lumps of rubber in base of rib 

G12935207Courtesy of MERCEDES-BENZ USA

Swelling through contact with engine oil, coolant, cold cleaning solvent etc. 

NOTES Increase in belt width ≥ 0.7 mm (0.03 inches).

Look out for leaks in the major assemblies.

G12935208Courtesy of MERCEDES-BENZ USA