Mercedes Benz E 550 4MATIC Sedan Technical Service Bulletin # LI42-10_P-048315 Date: 091208
Brakes - Rear Brake Squeal
REAR BRAKES SQUEAL WHEN APPLIED
Topic number LI42.10-P-048315
Version 1
Design group 42.10 Service brake
Date 12-08-2009
Validity Model 212.056 with code (494/050/Q06) and model 212. 072 with code 494.
Reason for change
Reason for block
Complaint:
Rear wheel brake squeal when braking.
2010 Mercedes Benz E 550 4MATIC Sedan (212.090) V8-5.5L (273.970) Page 177
Cause:
Resonant vibrations
Remedy:
1. Check brake pads for ease of movement.
2. Remove brake pads from brake pad slots and clean the slots if necessary.
3. Replace brake pads and housing retaining springs.
Note:
Lubricate brake pads on their guide pieces ("hammer heads") with MB Plastilube brake paste, see attachment.
Remark:
- As a rule brake disks do not have to be replaced due to brake squeal. One exception is major score marks or waviness resulting from wear. In, this
case the possibility of brake squeal cannot be fully ruled out.
- Reproduce squealing noise when braking and ensure that the noise is caused by the rear axle.
- If necessary, use the help of an assistant to localize the noise.
Attachments
Symptoms
Parts
Work Units
2010 Mercedes Benz E 550 4MATIC Sedan (212.090) V8-5.5L (273.970) Page 178
WIS-References
Validity
Attachment - Lubricate brake pads on guide pieces
