NHTSA ID Number: 10167053
Manufacturer Communication Number: LI42.10-P-058839
TSB/Document Date: 2019-11-04
Summary
When braking, squeaking noises from the front axle are heard just before the vehicle comes to a stop.
Model series 166 - Squeaking noises from area of front axle brake
Topic number
LI42.10-P-058839
Version
1
Design group
42.10 Service brake
Date
04-03-2014
Validity
Model series 166 except AMG
model designations
Production date up to:
31.08.2013
Chassis end number up to:
A297063
Reason for change
Validity adapted
Reason for block
Complaint:
When braking, squeaking noises from the front axle are heard just before the vehicle comes to a stop.
Cause:
Interaction between brake lining backplate and brake lining guide of brake carrier (push/pull dimension).
Remedy:
Check whether there is sufficient clearance between the brake lining backplate and the brake lining guide of the brake
carrier:
1) Position screwdriver at lowest point of brake lining backplate (see attachment: "Screwdriver application point")
2) Press brake lining upwards
3) Measure distance between brake lining backplate (top side) and brake carrier (using feeler gauge) (see attachment: "Checking push/pull dimension")
If the distance is not between 0.6 and 1.1 mm, replace the following components of the front axle as per EPC:
- Brake carrier
- Brake linings
Then again check whether the push/pull dimension is within the tolerance range.
If it varies, create a PTSS case.
Attachments
File
Designation
Ansatzpunkt Schraubendreher.jpg
Screwdriver application point
Überprüfen des Push Pull Maß.jpg
Checking push/pull dimension
Symptoms
Chassis/suspension / Brake system / Service brake / Brake noise / Squeaking
04-03-2014 1:32 PM
© Copyright Daimler AG
KOLESK
Page 1/3
Work units
Op. no.
Operation text
Time
Damage
code
40-1590
REMOVE/INSTALL WHEELS (2)
42114 36
42-2706
REMOVE/INSTALL BRAKE PADS OF
FRONT AXLE, REPLACE IF NECESSARY (WHEELS REMOVED)
42114 36
42-2717
REMOVE/INSTALL BRAKE CALIPERS
OF FRONT AXLE, REPLACE IF NECESSARY (BRAKE PADS REMOVED)
42114 36
42-2720
REMOVE/INSTALL BRAKE CARRIER,
REPLACE IF NECESSARY (BRAKE
CALIPER REMOVED)
42114 36
Note
WIS-References
Document number
Title
Note
Allocation
AP40.10-P-4050EW
Remove/install wheels, rotate if necessary
Remedy
AR42.10-P-1600GQ
Remove/check/install front
axle brake pads
Remedy
AR42.10-P-0070GZ
Remove/install front axle
brake caliper
Remedy
Validity
Vehicle
GL (166)
*
*
M (166)
*
*
Vehicle
166.003
651.960
722.908
166.004
651.960
722.908
166.023
642.826
722.903
166.023
642.826
725.031
166.024
642.826
722.903
166.024
642.826
725.031
166.055
276.955
722.906
166.056
276.821
722.904
166.057
276.955
722.906
166.058
276.955
722.906
166.062
276.821
722.904
166.073
278.928
722.909
166.073
278.928
725.031
Full model designation breakdown
04-03-2014 1:32 PM
© Copyright Daimler AG
KOLESK
Page 2/3
166.073
278.928
725.032
166.074
157.982
722.905
166.074
157.982
722.931
166.823
642.826
722.903
166.823
642.826
725.031
166.824
642.826
722.903
166.824
642.826
725.031
166.856
276.821
722.904
166.864
276.821
722.904
166.872
278.928
722.909
166.872
278.928
725.031
166.872
278.928
725.032
166.872
278.928
725.033
166.873
278.928
722.909
166.873
278.928
725.031
166.873
278.928
725.032
166.873
278.928
725.033
166.874
157.982
722.905
166.874
157.982
722.931
04-03-2014 1:32 PM
© Copyright Daimler AG
KOLESK
Page 3/3
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TSB/Document ID: LI42.10-P-058839
Replacement Service Bulletin Number:
MFR Communication Date: 2014-04-03
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: SERVICE BRAKES
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
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