2048616-4

Technical product information
Topic
Market area
Brand
Transaction No.
Level
Status
Release date
Creaking noise from the front suspension when manoeuvring
Bentley: worldwide (2WBE),Hongkong-Macau (5HK)
Bentley
2048616/4
EH
Approval
New customer code
Object of complaint
Complaint type
Position
running gear -> shock absorber/suspension control -> jounce noise, vibration -> creak front
New workshop code
Object of complaint
Complaint type
Position
running gear -> running gear, springs, shock absorbers -> axle member mount noise, vibration -> noise left
running gear -> running gear, springs, shock absorbers -> axle member mount noise, vibration -> noise right
Vehicle data
Bentayga
Sales types
Type MY Brand Designation Engine code Gearbox code Final drive code
4V1* 2017 E
4V1* 2018 E
4V1* 2019 E
Documents
Document name
master.xml
lowersuspensionleverbushes.docx
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Technical product information
Creaking noise from the front suspension when manoeuvring
Transaction No.: 2048616/4
Customer statement / workshop findings
Creaking noise from the front suspension when manoeuvring
Technical background
Front suspension entering bump phase during braking can produce an audible creak from lower control arm hydraulic mount
Production change
*
Measure
Listen to the below video link and compare it to the customer complaint:
https://vimeo.com/291048296
The noise present in the video is caused by a defective ’Lower suspension lever - Rear - Hydraulic mounts. In order to reproduce the noise this bush
must be twisted, therefore the noise can appear in the following circumstances
•
When performing parking manoeuvers with the brake applied
•
When steering from lock to lock with the vehicle in motion and the brake applied
•
When the vehicle is moved with steering input over uneven surfaces (for e.g. a ramp or speed bump)
If the customer complaint occurs in any of the above circumstances and the noise can be clearly assigned to the above video link in this TPI, then
replace the right hand front and left hand front rearmost lower suspension lever inner hydraulic mounts - Refer to Repair manual Rep.Gr.40 front
suspension, lower suspension lever bushes – to remove and fit NOTE: Should the remove and refit instructions not be visible within the
repair manual please refer to the attached document and follow the instructions to replace the applicable bush.
The lubricant quoted within the procedure should be sourced locally or use a suitable alternative of the same specification
Figure 1 shows the left hand front rearmost lower suspension lever (A) the hydraulic mount which must be changed is located at (B)
Within the Repair manual procedure there are single use items which must be replaced and not reused. Ensure that new
replacements are available prior to starting this procedure – Refer to Elsa pro and ETKA parts catalogue
Figure 1
Warranty accounting instructions
Remove the right and left hand levers including the replacement of both hydraulic mounts
Warranty type
110 or 910
Labour Operation Code
40 20 56 00
Damage Service Number
40 20
Damage Code
00 20
Time
180TU
Parts information
Part
number
Description Quantity
Refer to
ETKA parts
catalogue
Hydraulic
mounts
2
Lower suspension lever bushes - To replace
General Information
Bush — Lower suspension lever rear — To remove and fit
–
Removing and installing bonded rubber bush for guide link
Special tools and workshop equipment required

Thrust plate — VW 402


Press tool — VW 412


Removal tool

Removal sleeve

Workshop press VAS 6654

Assembly lubricant -G 294 421 A1-














Removal
–
–
Remove rear lower suspension lever. Refer to "Lower
suspension lever — Rear — To remove and fit".→ Rep.-Gr.40
Mark installation depth on bonded rubber bush using a
waterproof felt-tip pen or similar.
–
Set up special tools as shown in illustration

-1- Workshop press -VAS 6654

-2- Press tool guide

-3- Suitable spacer

-4- Press tool T40048/7

-5- Bonded rubber bush

-6- Suspension arm

-7- Separating device VAS 251413

Note
Hold the suspension arm when pressing the bonded rubber bush
in or out.
–
Press bonded rubber bush out of guide link.
Installation
Installation is the reverse of removal procedure, noting the
following.
–
–
Transfer marking for installation depth from old bonded rubber
bush to new bush.
Lightly lubricate new bush with assembly lubricant.
Installation position of bonded rubber bush
–
–
–
–
–
–
Notch -1- should be parallel with guide link and should point
inwards towards guide link.
Arrow -2- points inwards towards guide link.
Fit bonded rubber bush into guide link using previous setup of
special tools.
Press bonded rubber bush into guide link, taking care to keep
it straight.
Use marking made before removal -arrow- as a guide.
Check installation depth -a- of bonded rubber bush in guide
link.
Note
l Dimension -a- = 23 mm
–
–
Press bonded rubber bush in further if specification is not
met.
Refit rear lower suspension lever.
Bush — Lower suspension lever front — To remove and fit
–
Removing and installing bonded rubber bush for guide link
Special tools and workshop equipment required

Thrust plate — VW 402


Press tool — VW 412


Press tool set 3348

Separating device VAS 251413

Workshop press VAS 6654

Assembly lubricant -G 294 421 A1-






















Removal
–
Remove front lower suspension lever. Refer to "Lower
suspension lever — Front — To remove and fit".→ Rep.-Gr.40

–
Set up special tools as shown in illustration

-1- Workshop press -VAS 6654

-2- Press tool guide

-3- Suitable spacer

-4- Press tool 3348/3

-5- Bonded rubber bush

-6- Suspension arm

-7- Separating device VAS 251413
–
Mark installation depth -arrow- and rotation orientation -A- on
bonded rubber bush using a waterproof felt-tip pen or similar.
Note
Hold the suspension arm when pressing the bonded rubber bush
in or out.
–
Press bonded rubber bush out of guide link.
Installation
Installation is the reverse of removal procedure, noting the
following.
–
–
Transfer marking for installation depth from old bonded rubber
bush to new bush.
Lightly lubricate new bush with assembly lubricant.
Installation position of bonded rubber bush
–
–
–
–
–
Align mark on bonded rubber bush with mark on suspension
arm
Fit bonded rubber bush into guide link using previous setup of
special tools.
Press bonded rubber bush into guide link, taking care to keep
it straight.
Use marking made before removal as a depth guide.
Check installation depth -1- of bonded rubber bush
in guide link -2-.
Note
Specification: Dimension -a- is equal to dimension -b-
–
Press bonded rubber bush in further if dimensions
are not equal