2054862/7

Technical product information
Topic
Market area
Brand
Transaction No.
Level
Status
Release date
Front brake squeal - 1.8 KHz to 1.9 KHz
Bentley: worldwide (2WBE)
Bentley
2054862/7
EH
Approval
New customer code
Object of complaint
Complaint type Position
running gear -> brake system noise, vibration
Vehicle data
Bentayga series
Sales types
Type
4V1*
4V1*
4V1*
4V1*
4V1*
MY
2017
2018
2019
2020
2021
Brand Designation Engine code
E
*
E
*
E
*
E
*
E
*
Documents
Document name
master.xml
Gearbox code
*
*
*
*
*
Final drive code
*
*
*
*
*
Technical product information
Front brake squeal - 1.8 KHz to 1.9 KHz
Transaction No.: 2054862/7
Customer statement / workshop findings
Front brake squeal with a frequency of 1.8 KHz to 1.9 KHz
Technical background
Modified front brake Callipers and modified front brake disc guard plates are available on receipt of a qualifying DISS query
Referring to Figure 1, the replacement front callipers have a Dynamic absorber fitted (A), the brake disc guard plates (B) are pre modified to fit
around the absorber
Figure 1
Revision history
2054862/7 - Parts information section has been updated (part numbers added for the left and right brake disc guard plates)
Production change
Not applicable
Measure
1) Refer to Brake Noise Identification TPI 2052785/5 and supply a recording and confirmation of the brake squeal including frequency
Refer to the Bentley Hub (Reference TPI 2054862/-) for an example of the specific brake noise
•
Confirm the brake components are in a serviceable condition
Should the brake discs or brake pads not be in a serviceable condition this must be amended and retested to confirm if the
squeal is still evident before replacing the brake callipers and brake disc guard plates
Normal Warranty and Elsa pro guidelines apply regarding brake disc and pad replacement
IMPORTANT: For frequency analysis the noise recording equipment Bentley Motors recommends is - Chassis ear tool WT 10437
•
If the sound recording produces a frequency of 1.8 to 1.9KHz and the brake components are in a serviceable condition carry out the
onward instructions
•
NOTE: Within this procedure there are single use items, please ensure you have stock of the suggested parts prior to starting the
procedure – Refer to applicable repair manual chapters and the ETKA parts catalogue
Removal of original components
2) Remove both front brake callipers and brake pads - Refer to Repair manual Rep.Gr 47
•
Remove both front brake discs - Refer to Repair manual Rep.Gr 46
•
Remove both front brake disc guard plates - Refer to Repair manual Rep.Gr 46
Should the brake discs and/or brake pads not be in a serviceable condition the applicable parts must be replaced NOTE:
Normal Warranty and Elsa pro guidelines apply regarding brake disc and pad replacement
Fitting the replacement modified components
3) Fit both front brake disc guard plates - Refer to Repair manual Rep.Gr 46
•
Fit both front brake discs - Refer to Repair manual Rep.Gr 46
•
Fit the replacement front brake callipers and brake pads - Refer to Repair manual Rep.Gr 47
•
Referring to Figure 2, once fitted check and confirm the disc guard plates are not touching the brake calliper Dynamic absorber
Figure 2
Warranty accounting instructions
Right and Left hand front - Guard plate and Calliper removal and refitting
Warranty Type
110 or 910
Damage Service Number 47 39
Damage Code
00 20
Labour
Labour Operation Code 47 39 42 00
Time
190 Time units
Frequency diagnosis including road test
Labour
Labour Operation Code 47 01 01 00
Time
80 Time units (includes road test 01 21 00 00 - 50 Time units)
Parts information
Description
Part Number
Left brake disc guard plate 36A615311A
Right brake disc guard plate 36A615312A
Right hand calliper (Black)
36A615108D
Left hand calliper (Black)
36A615107D
Right hand calliper (Red)
36A615108E
Left hand calliper (Red)
36A615107E
Disc guard plate fixings
Refer to ETKA
Front Calliper fixings
Refer to ETKA