Body/Interior - Squeaks and Rattles
910-11XK8
DATE 03/01
MODEL
1997 MY-ON XK8 Range
VIN
Refer to text
Squeaks & Rattles - Diagnostics - Repair Methods
Issue:
This bulletin has been issued to assist in the diagnostic process on a customer complaint basis only, relating to vehicles with squeaks and rattle issues.
BACKGROUND INFORMATION
Vehicle noise is inevitable when a vehicle is in use. Current development efforts are aimed at reducing noise levels created by components such as engine, driveline and tires, but, the quieter these become, the more evident any other unwanted noises will be.
Squeaks are generated through frictional contact of parts. The severity of the noise is a function of contact velocity, material properties, angle of contact etc.
Rattles are generated through part impact contact between two or more components. The severity of the noise is dependent upon velocity, clearance (between the components), local stiffness of components etc.
Shown are descriptions of the types of noises from either a Squeak or Rattle.
Action:
To identify the source of the concern, first determine where the noise is generated. To assist with this, the customer can provide important information in helping diagnose the noise in question. For all Squeaks and Rattles concerns and to ensure the correct root cause is identified and repaired, follow the Workshop Procedure below and see the Squeaks and Rattles verification Process.
A Squeaks and Rattles Diagnostic Check sheet has been produced, that should be completed with the customer to help identify where the noise is, and under what conditions it happens.
WORKSHOP PROCEDURE
Note:
Before carrying out any repairs, check Technical Service Bulletins for any related issues.
If after checking the Diagnostic Check Sheet information the issue is known, investigate, repair and verify. (See Appendix 1 route A)
Once the area from which the noise is being generated has been identified, follow the procedure listed below. (See Appendix 1 route Be)
1. Check the quality of fit, clearance or bonus material and security.
2. Manipulate the assembly parts to see if a noise is produced.
3. Remove the part (if necessary) and rectify.
4. Re-test the vehicle to verify fix.
If the noise is still present consider the following questions:
- What information has the customer provided?
- What is the possible cause?
- What is the purpose and function of the component concerned?
- What type of testing can be done?
- How does it fit and what is it next to?
- What equipment is available to me?
- What is the remedial action?
- What raw materials do we have to rectify the component?
ROAD TESTING
The Road Test should be conducted under the same conditions as described by the customer to identify the concern accurately.
The test is better conducted by two people. Whilst one concentrates on driving, the other can work on the component from which the noise is emanating.
Note:
It is a good idea that the two people change places to compare impressions as appropriate.
Apply a load to see if the noise is affected. If the noise changes or is eliminated, re-test without the item fitted. If the noise is no longer present examine the part and treat with anti-rattle materials or refit as appropriate. (See Technical Service Bulletin 910-08 for Squeaks and Rattles Service Kits)
If the noise cannot be isolated, consider adjacent locations and investigate.
Removing parts and re-testing should be undertaken to isolate the affected component
POSSIBLE AREAS OF CONCERN
The following tables depict areas around the vehicle that could possibly cause a Squeak or Rattle.
AREA OF CONCERN: FRONT OF VEHICLE
Description
Creak from steering wheel.
Root Cause
Horn bar springs creaking in mountings.
Action
Warning:
Observe the safety precautions in JTIS section 501-20, Driver Air Bag Module SO 76.73.39. Apply Krytox(R) grease to springs.
Affected VIN range
A00116 to A07460
Description
Creak from steering wheel.
Root Cause
Steering wheel securing lugs creaking.
Action
Warning:
Observe the safety precautions in JTIS section 501-20, Driver Air Bag Module SO 76.73.39. Fit anti-squeak tape under securing lugs.
Affected VIN ranges
A00116 to A05577
Description
Radio rattle.
Root Cause
Rear of radio not fully supported.
Action
Fit foam pad to transmission tunnel to support rear of radio.
Affected VIN range
A00116 to A01362
Description
A-post trim rattle.
Root Cause
A-post trim not fully secured.
Action
Add anti-squeak tape to a-post trim fixings to improve fit
Affected VIN range
A00116 to A04021
Description
Creaking noise emanating from lower edge of navigation screen.
Root Cause
Fascia/surround rubbing against navigation screen.
Action
Fit anti-squeak tape to lower edge of navigation surround.
Affected VIN ranges
A00116 to A00809
Description
Center veneer creak.
Root Cause
Top edge of console veneer rubbing against dash.
Action
Fit anti-squeak pads to top edge of center veneer.
Affected VIN ranges
A00116 to A01362
Description
Fascia creak.
Root Cause
Excessive sealer or weld flash (from spot-weld) on front suspension turret mounting face.
Action
Remove excessive sealer or spot-weld flash.
Affected VIN range
A00116 to A06711
Description
Ticking noise from fascia.
Root Cause
Passenger air bag mounting bracket touching fascia.
Action
Fit felt pad between air bag mounting bracket and fascia.
Affected VIN range
A00116 to A07704
Description
Fascia rattle/knock.
Root Cause
Traction control pipe touching body.
Action
Fit foam pad between body and pipe.
Affected VIN range
A00116 to A04837
Description
Front door rattle.
Root Cause
Door handle cable release fouling door panel.
Action
Fit foam pad between door panel and release cable.
Affected VIN range
A00116 to A06849
AREA OF CONCERN: REAR OF VEHICLE
Description
Rear speaker rattle (non-premium Audio System).
Root Cause
Back of speaker touching body reinforcement bracket
Action
Fit foam pad between rear of speaker and reinforcement bracket
Affected VIN range
A00116 to A09443
Description
Ticking noise from rear quarter.
Root Cause
2 Spot-welds on rear sill too far rearwards.
Action
Dress down panel forward of spot-welds.
Affected VIN range
A00116 to A02253
FURTHER ASSISTANCE
In some cases it may not be possible to identify the cause of the noise, or it could have re-occurred.
If this is the case, contact Technical Hotline for assistance.
Please fax your completed Squeaks and Rattles Diagnostic Check Sheet to the Product Investigation Department.
Warranty Information:
This bulletin is issued for information only.