Suspension - Rear Knocking Noise On Uneven Roads/ Bumps

Retailer Technical Journal 20251
Rear upper spring seat, Knocking noise

Date 05-13-2009

Reference: VIDA, VSTG, RTJ 13854

Note!
If using a printed copy of this Retailer Technical Journal, first check for the latest online version.





AFFECTED VEHICLES:

DESCRIPTION:
Customers may complain about a knocking noise from the rear suspension while driving on uneven roads in slow speeds around 5-50 km/h (3-31 MPH), and sometimes when driving over a speed bump.





MATERIALS:

SERVICE:
First, carry out basic analysis to understand where the noise is coming from. If possible, use the Chassis Ears toolkit.

If the Chassis Ear toolkit is not available, check the complete rear suspension (nut and screw torque, bushings, etc).
Check anti-roll (sway) bar links as per TJ 13854.
Check that there are no oil leaks from rear shock absorbers.

If the noise is coming from the rear springs, install the rubber isolators to add extra isolation between the body and the springs.





Cut and install the rubber parts as illustrated in the procedure below. Use the template.





1. Kit PN 30645688





2. Align template and cut.





3. Align template and cut.





4. Peel off backing.





5. Apply two pieces to top of spring seat.





WARRANTY CLAIM INFORMATION