Mercedes Benz S 550 4MATIC Technical Problem #LI13-20_P-049041 Date: 100310
Engine - Squeaking Noises From The Belt Drive
Squeaking noises from the belt drive
Topic number LI13.20-P-049041
Version 1
Design group 13.20 Belt drive, general
Date 03-10-2010
Validity Belt drive, engine 272 and engine 273.
Reason for change
Reason for block
Complaint:
Squeaking noises from the belt drive
2010 Mercedes Benz S 550 4MATIC (221.186) V8-5.5L (273.968) Page 334
Cause:
Axial shifting (temperature-related) of the individual belt pulleys and guide pulleys can lead to squeaking noises in isolated cases.
Remedy:
Application of Krytox lubricant - belt dressing A000 989 36 60 (from lubricating kit A000 580 03 50) - one to two drops at each point to the inner
and outer side edges of the poly-V belt. Procedure:
- Bring the engine to the operating temperature (80 deg. C) and switch it off.
- Remove top front engine cover as required to get access to the poly-V-belt.
- Apply one to two drops of Krytox lubricant to the inner and outer side edges of the poly-V belt near the top idler pulley (important: only treat the
edges of the belt. If the lubricant is applied to the running surface of the belt, this can cause the poly-V belt to slip).
- Start the engine so that the lubricant can spread along the edges of the belt.
* Sufficient for 15 cars, Submit as Local Purchase - KRY00284, Qty 1, handling is included
Attachments
Symptoms
Parts
Work units
2010 Mercedes Benz S 550 4MATIC (221.186) V8-5.5L (273.968) Page 335
Validity
2010 Mercedes Benz S 550 4MATIC (221.186) V8-5.5L (273.968) Page 336
Attachment - Description: Apply Krytox to edges of poly-V belt
Engine - Squeaking Noises From The Belt Drive
Squeaking noises from the belt drive
Topic number LI13.20-P-049041
Version 1
Design group 13.20 Belt drive, general
Date 03-10-2010
Validity Belt drive, engine 272 and engine 273.
Reason for change
Reason for block
Complaint:
Squeaking noises from the belt drive
2010 Mercedes Benz S 550 4MATIC (221.186) V8-5.5L (273.968) Page 334
Cause:
Axial shifting (temperature-related) of the individual belt pulleys and guide pulleys can lead to squeaking noises in isolated cases.
Remedy:
Application of Krytox lubricant - belt dressing A000 989 36 60 (from lubricating kit A000 580 03 50) - one to two drops at each point to the inner
and outer side edges of the poly-V belt. Procedure:
- Bring the engine to the operating temperature (80 deg. C) and switch it off.
- Remove top front engine cover as required to get access to the poly-V-belt.
- Apply one to two drops of Krytox lubricant to the inner and outer side edges of the poly-V belt near the top idler pulley (important: only treat the
edges of the belt. If the lubricant is applied to the running surface of the belt, this can cause the poly-V belt to slip).
- Start the engine so that the lubricant can spread along the edges of the belt.
* Sufficient for 15 cars, Submit as Local Purchase - KRY00284, Qty 1, handling is included
Attachments
Symptoms
Parts
Work units
2010 Mercedes Benz S 550 4MATIC (221.186) V8-5.5L (273.968) Page 335
Validity
2010 Mercedes Benz S 550 4MATIC (221.186) V8-5.5L (273.968) Page 336
Attachment - Description: Apply Krytox to edges of poly-V belt
