Mercedes Benz C 300 4MATIC # LI83-55_P-0534652 Date: 120615 A/C - Howl, Rattle Noise From Engine Compartment

 Mercedes Benz C 300 4MATIC # LI83-55_P-0534652 Date:
120615
A/C - Howl, Rattle Noise From Engine Compartment
Howling, rattling noise from engine compartment
Topic number L183.55-P-053465
Version 2
Design Group 83.55 A/C compressor
Date 06-15-2012
Validity Model series 204 and 207 with Valeo refrigerant compressor
Reason for change Model Validity Changed
Complaint:
1. Howling noise from engine compartment.
2. Rattling noise from engine compartment.
Attachments
Cause:
  42
1. Wear of rubber damper on Valeo refrigerant compressor.
2. Wear of bearing of belt pulley on refrigerant compressor.
Remedy:
Replacement of belt pulley on refrigerant compressor, see WIS document AR 83.55-P-7685C.
Pay attention to the correct type of refrigerant compressor (Valeo, see picture) and the associated belt pulley diameter (110 mm or 120 mm).
Symptoms
Parts
Work units
Attachment
Defect free rubber damper/Valeo refrigerant compressor
  43
Torn rubber damper