Suspension - Front End Knocking Noises
Title Front strut, knocking noiseRef No US22109.3.0 en-GB
Issuer -
Partner 3 US 7510 VOLVO CARS NORTH AMERICA
Func Group 6110 Func Desc axle shaft, spring strut
Status Released
Status Date 2010-10-29
Issue Date 2010-10-27
Reference VIDA
Attachment
Vehicle Type
CSC
DTC
Text
CSC = Customer Symptom Code
DTC = Diagnostic Trouble Code
NOTE!
THIS DOCUMENT SUPERSEDES THE PREVIOUS RETAILER TECHNICAL JOURNAL 22109 DATED 01-19-2010. There is a new spring insulator available as a spare part. PLEASE UPDATE YOUR FILES.
DESCRIPTION:
Reports have been received stating that a customer's complaint of a knocking noise was remedied by replacing the spring insulator in the lower spring seat in the front struts. Analysis has shown that a broken insulator shown in Photo 1 of the attachment cannot cause a knocking noise and that noise must be caused by another source.
PRODUCT MODIFICATION:
A new smaller insulator PN 31329206 has been developed and is available as a spare part. These can be used when replacing springs and/or shocks.
SERVICE:
If a lower spring insulator PN 30748995 is broken according to Photo 1 of the attachment then there is no immediate need to replace it with a new one instead carry out the following:
- Clean the area around the lower spring seat; remove gravel stones etc.
- Cut off the loose part from the broken insulator as shown in Photo 2 of the attachment; the removed part will not cause any knocking noise.
- Continue to fault trace the car for other causes:
1. Check torque for upper top-mount bearing (PN 30683637) 2 x 70 Nm and to the body 3 x 25 Nm also check if this bearing have any damages according to RTJ 13876.
2. Check torque for the front anti-roll bar links upper 90 Nm (66.4 lbf-ft) and lower 60 Nm (44.3 lbf-ft).
3. Check other front suspension parts. If the noise can not be found use the Chassis Ears toolkit.
VOLVO STANDARD TIMES GUIDE (VSTG) INFO
ATTACHMENT
CAR CUSTOMER SERVICE - TJ INSTRUCTIONS