Examining poly V-belt, typical damage - RA13001203430X(13-3430)

WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.

Preceding work:

Hood raised to vertical position (01-0080) .

Right cover over high voltage distributor removed.

Operation no. of the operation texts and work units or standard texts and flat rates

Fig 1: Identifying Mark On Poly V-Belt

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

EXAMINING

Poly V-belt (12)	mark with chalk at a clearly visible point (arrow).
Engine	crank in stages with starter (01-0110) .
Poly V-belt (12)	examine for signs of damage.
Procedure	end once marking (arrow) is again visible (one full belt revolution).

Damage patterns

The poly V-belt must be replaced (subject to separate repair order) if the following damage patterns are found:
Rubber clumps in base of ribs (C), dirt or grid embedded (D).

Fig 2: Identifying Poly V-Belt - Damage Patterns
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Wear to flank (F), ribs are pointed - trapezoidal in shape when new (E) and cord visible in base of rib (G, lighter points).

Fig 3: Identifying Drive Belts Of Lighter Points
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Rib (arrow) detached from base of belt. Splits (H) across several ribs.

Fig 4: Identifying Drive Belts Of Across Several Ribs
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Splits in ribs (H) and/or sections broken out of ribs (J).

Fig 5: Identifying Drive Belts Broken Out Of Ribs
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Cord torn out at the side (K) or fraying (L) of outer cords.

Fig 6: Identifying Drive Belts Fraying Of Outer Cords
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Splits (M) across the back.

Fig 7: Identifying Splits Across Back
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.