2048616/8

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
2048616/8
EH
Released for publishing
03-Jul-2020
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 series
Sales types
Type MY Brand Designation Engine code Gearbox code Final drive code
4V1*
4V1*
4V1*
4V1*
4V1*
2017
2018
2019
2020
2021
E
E
E
E
E
*
*
*
*
*
Documents
Document name
master.xml
creaklowersuspensionleverbush.docx
kovomoanddiesel.docx
lowersuspensionleverw12only.docx
transmissionmountsfront.docx
*
*
*
*
*
*
*
*
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Technical product information
Creaking noise from the front suspension when manoeuvring
Transaction No.: 2048616/8
Release date: 03-Jul-2020
Customer statement / workshop findings
Creaking noise from the front suspension when manoeuvring
Technical background
Verify that the customer complaint matches the sound file within the Bentley Hub – Reference TPI Transaction number 2048616/TIP: When listening to the sound file the noise can be heard from between 0 and 3 seconds
The noise present in the sound file is caused by 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 noise within the sound file –
Refer to the instructions within the Measure section of this TPI
Production change
*
Measure
1) 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 documents, please ensure the correct document is followed as the
remove and refit procedures for the front rearmost lower suspension levers removal is different depending on type of engine
which is fitted
NOTE: The lubricant quoted within the procedure should be sourced locally or use a suitable alternative of the same
specification
Figure 1 shows for example the left hand front rearmost lower suspension lever (A) the hydraulic mount which must be changed is located at (B)
NOTE: Ensure the right and left hand side hydraulic mounts are replaced
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
Warranty type
110 or 910
Damage Service Number 40 20
Damage Code
00 20
Bentayga W12
Labour Operation Code 40 20 56 00
Time
590 TU
Bentayga Kovomo V8
Labour Operation Code 40 20 56 20
Time
260 TU
Bentayga Diesel
Labour Operation Code 40 20 56 40
Time
270 TU
Parts information
Part number
Description
Quantity
Refer to ETKA parts catalogue Hydraulic mounts 2
Lower front suspension lever (rear) bush - 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 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.
Kovomo and Diesel Lower suspension lever - Rear - To remove and fit
General Information
The following procedure is for the LH lower rear lever. The procedure for the RH lever is the same except where
stated.
Special tools and workshop equipment required

Ball joint puller -T10444-

Vehicle tester

21 mm Ring insert -VAG 1332/7-

Torque tightening values
Unless otherwise shown, standard torque values apply.
→ Rep.-Gr.00
Single use items
Within this procedure there are single use items which
must be replaced and not reused. Ensure that new
replacements are available prior to starting this
procedure.
Removal
Set the car in "Jack" mode and position on a ramp.
–
Refer to "Raising and supporting the car". → Rep.Gr.99
Discharge the air from the air spring dampers.
–
Refer to "Air suspension system - To discharge and
charge".→ Rep.-Gr.43
Caution
Ensure the air is evacuated from the suspension
strut prior to carrying out this procedure. The air

is under high pressure and must only be
discharged via the Vehicle tester.
Once the air has been discharged from the air
suspension struts, the car must NEVER be
lowered and allowed to rest on its wheels and

compressing the discharged air suspension
struts. Failure to comply may result in internal
damage of the air bellows leading to catastrophic
failure of the air suspension strut.
–
Remove the foremost under sheet. Refer to "Front
undersheets - To remove and fit". → Rep.-Gr.66
Remove the foremost transmission mount
–
assembly. Refer to "Automatic transmission mounts
- Front - To remove and fit ". → Rep.-Gr.37
–
Remove the fixings -arrows- (10 Nm) and detach
the heatshield -2-.
Note
The LH side has an additional coolant pipe stay bracket
-1-. Remove this fixing also where applicable -arrow(10 Nm).
On the outer section of the lower lever and using 21
–
mm Ring insert -VAG 1332/7-, release the nut arrow- (140 Nm) until it is flush with the end of the
thread of the ball joint.
–
–
–
–
Using Ball joint puller -T10444-, "break" the taper
pin of the ball joint.
Remove the Ball joint puller -T10444- , remove and
DISCARD the nut -arrow-.
Remove and DISCARD the fixings -2 and 3- (70
Nm + 180°.
Manoeuvre the lower lever -1- out from the sub
frame and wheel bearing housing.
Installation
Installation is the reverse of removal procedure, noting
the following.
Note
The lower lever -1- MUST be fitted into the wheel
bearing housing first.
Secure the outer section of the lower lever -1- to the
–
wheel bearing housing with a NEW fixing -arrowbut do NOT yet torque tighten.
Secure the inner section of the lower lever -1- to the
–
sub frame with NEW fixings -2 and 3- but do NOT
yet torque tighten.
Caution
There is a requirement that any suspension
component with bonded rubber bushes, all levers
and the bearing housing MUST be set at standard
ride height before tightening the fixings.
Bonded rubber bushes can only be turned to a
limited extent. The suspension mountings must
therefore only be tightened when the suspension is
in the unladen position or normal level.
Failure to comply will result in the lever bushes
undertaking excessive torsional twist, resulting in
rupture and complete failure of the rubber inserts.
The suspension must be set to a specific angle prior to
torque tightening the fixings.
Position the Hydraulic support stand ASE40611000000 or VAG 1383-A- beneath the
–
wheel bearing housing and jack until the
suspension levers are at the correct ride height
level. Refer to "Raising the wheel bearing housing To tighten bolts".→ Rep.-Gr.40
With the wheel bearing housing in the raised
–
position, torque tighten the fixing -3- to 70 Nm + 180
° using a suitable "crow ring" spanner.
–
Remove the Hydraulic support -ASE40611000000
or VAG 1383-A-.
Using 21 mm Ring insert -VAG 1332/7- , torque
–
tighten the nut -arrow- securing the ball joint on the
outer section of the lower lever -1- to the wheel
bearing housing to 140 Nm.
–
–
Take the car out of "Jack" mode.→ Rep.-Gr.99
Charge the air suspension. Refer to "Air suspension
system - To discharge and charge".→ Rep.-Gr.43
Lower suspension lever (W12) - Rear - To remove and fit
General Information
The following procedure is for the LH lower rear lever. The procedure for the RH lever is the same except where
stated.
Access is only possible after the removal of the front subframe.
Special tools and workshop equipment required

Ball joint puller -T10444-

Vehicle tester

21 mm Ring insert -VAG 1332/7-
Torque tightening values
Unless otherwise shown, standard torque values apply.
→ Rep.-Gr.00
Single use items
Within this procedure there are single use items which
must be replaced and not reused. Ensure that new
replacements are available prior to starting this
procedure.
Removal
–
Remove the front subframe. Refer to "Front
subframe - To remove and fit". → Rep.-Gr.40

–
Remove the two fixings -arrows- and the heatshield
-1-.
On the outer section of the lower lever and using 21
–
mm Ring insert -VAG 1332/7-, release the nut arrow- (140 Nm) until it is flush with the end of the
thread of the ball joint.
–
–
Using Ball joint puller -T10444-, "break" the taper
pin of the ball joint.
Remove the Ball joint puller -T10444- , remove and
DISCARD the nut -arrow-.
–
–
Remove and DISCARD the fixings -2 and 3- (70
Nm + 180°.
Manoeuvre the lower lever -1- out from the sub
frame.
Installation
Installation is the reverse of removal procedure, noting
the following.
Secure the outer section of the lower lever -1- to the
–
wheel bearing housing with a NEW fixing -arrowbut do NOT yet torque tighten.
Secure the inner section of the lower lever -1- to the
–
sub frame with NEW fixings -2 and 3- but do NOT
yet torque tighten.
Caution
There is a requirement that any suspension
component with bonded rubber bushes, all levers
and the bearing housing MUST be set at standard
ride height before tightening the fixings.
Bonded rubber bushes can only be turned to a
limited extent. The suspension mountings must
therefore only be tightened when the suspension is
in the unladen position or normal level.
Failure to comply will result in the lever bushes
undertaking excessive torsional twist, resulting in
rupture and complete failure of the rubber inserts.
The suspension must be set to a specific angle prior
to torque tightening the fixings and after the
subframe has been refitted.
–
Refit the front subframe. Refer to "Front subframe To remove and fit". → Rep.-Gr.40
Position the Hydraulic support stand ASE40611000000 or VAG 1383-A- beneath the
–
wheel bearing housing and jack until the
suspension levers are at the correct ride height
level. Refer to "Raising the wheel bearing housing To tighten bolts".→ Rep.-Gr.40
With the wheel bearing housing in the raised
–
position, torque tighten the inner fixings -2 and 3- to
70 Nm + 180°.
–
Remove the Hydraulic support -ASE40611000000
or VAG 1383-A-.
Using 21 mm Ring insert -VAG 1332/7- , torque
–
tighten the nut -arrow- securing the ball joint on the
outer section of the lower lever -1- to the wheel
bearing housing to 140 Nm.
–
–
Take the car out of "Jack" mode.→ Rep.-Gr.99
Charge the air suspension. Refer to "Air suspension
system - To discharge and charge".→ Rep.-Gr.43
Automatic transmission mounts - Front - To remove and fit
General Information
This procedure is for removing the front transmission mounts Gearbox mounting valve 1 -N262- and Gearbox
mounting valve 2 -N263-.
The procedure for the LH side is different to the RH side. Refer to the appropriate section below.
Special tools and workshop equipment required
None
Torque tightening values
Unless otherwise shown, standard torque values apply.→ Rep.-Gr.00
Single use items
Within this procedure there are single use items which must be replaced and not reused. Ensure that new
replacements are available prior to starting this procedure.
Removal — LH side
–
Remove the front road wheels. Refer to "Road wheel - To remove and fit".→ Rep.-Gr.44
–
Remove the front undersheets -2 & 3-.
Remove the front subframe brace. Refer to
–
"Brace front subframe - To remove and fit". →
Rep.-Gr.40
–
–
Disconnect the electrical connection -arrow- to the
transmission mount assembly.
Remove the three fixings -1- (10 Nm) and the
upper heatshield -2-.
Carefully bend the lower heatshield -1- downwards
–
and remove the three fixings -2- (10 Nm) and the
heatshield -3- from the mounting bracket.
–
–
Detach the coolant hose at the clipping point arrow-.
Remove the M12 "Multispline" fixing -arrow- (55
Nm) from the mount.
Remove the three fixings -arrows- (20 Nm) and
–
detach the inner transmission mount bracket -1and remove from the vehicle.
Caution
Prior to removing ANY of the fixings -arrows-, mark
the position of the transmission mounting bracket -1against the automatic transmission housing in order
to retain the correct height settings of the bracket -1. Failure to do so will result in premature mount
failure!
Carefully bend the heatshield -1- back into the
–
upright position and remove the outermost mount
fixing -2- (55 Nm).
–
Manoeuvre the mount and outer bracket assembly
out from the vehicle.
Replacement of the transmission mount
–
Using a soft-faced mallet, carefully tap the lower
bracket -1- from the transmission mount -2-.
Installation – LH side
Installation is the reverse of removal procedure, noting
the following.
Caution
When refitting the transmission mounting bracket -1, the mounting bracket MUST be positioned to the
corresponding markings previously made prior to
tightening the fixings -arrows-.
–
Refit all previously removed components.
–
Torque tighten all remaining fixings.→ Rep.-Gr.00
Removal — RH side
Remove the front road wheels. Refer to
–
"Road wheel - To remove and fit".
→ Rep.-Gr.44
–
Remove the front undersheets -2 & 3-.
Remove the front subframe brace. Refer to
–
"Brace front subframe - To remove and fit".→
Rep.-Gr.40
For vehicles equipped with "EAWS", remove the
–
two fixings -arrows- (10 Nm), detach the 48 volt
steering connector block -1- from the body and
move to one side.
–
Remove the three fixings -arrows- (10 Nm) and the
upper heatshield -1-.
–
Remove the fixing -1- from lower
steering coupling (20 + 90).
Detach the steering column -2-
–
from the rack -3- and push
upwards to gain access to the
transmission mount fixings.
Detach the electrical connection arrow- to the transmission mount.
Caution
Prior to removing ANY of the fixings -arrows-, mark the position
of the transmission mounting bracket -1- against the automatic
transmission housing in order to retain the correct height settings
of the bracket -1-. Failure to do so will result in premature mount
failure!
From the underside of the vehicle, remove the
–
rearmost fixing -arrow- (20 Nm) from the
transmission mount -1-.
–
–
–
Remove the two fixings -1- (20 Nm) securing the
transmission mount -2-.
Remove the outer fixing -3- (55 Nm) securing the
transmission mount -2- to the body.
Carefully manoeuvre the transmission mount assembly out
from beneath vehicle.
Note
Access is tight.
Replacement of the transmission mount
–
Remove the three fixings -arrows- (10 Nm) and the
heatshield -1-.
–
–
Remove the "Multispline" fixing -arrow- (55 Nm)
and detach the top bracket.
Using a soft-faced mallet, carefully tap the lower
bracket from the transmission mount.
Installation – RH side
Installation is the reverse of removal procedure, noting the
following.
Caution
When refitting the transmission mounting bracket, the mounting
bracket MUST be positioned to the corresponding markings
previously made prior to tightening the fixings -arrows-.
–
Refit all previously removed components.
–
Torque tighten all remaining fixings.→ Rep.-Gr.00