Tires/Wheels - Vibration/Shimmy: Overview
XT204-02DATE
04/02
X-TYPE
MODEL
2002 MY-ON
X-TYPE
VIN
C00001-ON
Vibration/Shimmy - Tire Radial Force Variation - Optimizing Wheels And Tires
Issue:
This technical bulletin can assist with resolving customer complaints of vibration/shimmy. Vibration/shimmy can be caused by Radial Force Variation (RFV) in the wheel/tire assemblies and the position of the affected wheels on the vehicle.
Action:
Note:
Access to a Hunter 9700/9712 wheel-balancing machine is required to perform the steps in this technical bulletin.
In case of a customer complaint of vibration/shimmy on vehicles, follow the optimization procedures below using a Hunter 9700/9712 balancing machine.
TYPES OF OPTIMIZATION PROCEDURES
Tire to Wheel Match Mounting
Tire is positioned on the wheel so that the "low point" of the tire is matched to the "high point" of the wheel. This procedure is also referred to as "match mounting".
The Hunter balancing machine performs this procedure.
Tire/Wheel Assembly to Hub
Tire/wheel assembly is mounted to the vehicle's hub in a manner that allows the Radial Force "high point" of the assembly to be neutralized by taking up the inherent clearance in the wheel to hub mating surface (Illustration 1). The Hunter balancing machine identifies high point of the wheel/tire assembly.
Note:
Tires are factory match-mounted on the wheels by Jaguar Cars at point of initial assembly and balancing. It is important to retain this mounting on vehicles where it is known that the original factory balance is still intact.
Parts Information
Warranty Information
WARRANTY POLICY STATEMENT
Jaguar Cars will pay for the replacement of a tire(s) for a steering vibration/shimmy complaint on a vehicle with less than 6 months, or 6,000 miles, whichever occurs first, provided the following conditions are met:
^ The retailer has demonstrated consistent compliance in maintaining 60 PSI storage pressure on all new vehicles in inventory up to time of sale. Failure to demonstrate compliance with this requirement will exclude the retailer from eligibility for tire reimbursement under this policy.
^ The diagnostic procedures outlined in this bulletin were followed using the required equipment, but the concern could not be resolved.
^ A Tire Optimization Form, S96, must be completed and attached to the hard copy of the repair order along with the RFV print outs from the tire balancer.
^ Replacement of the tire was authorized by your After Sales Market Manager prior to the work being completed. A signed W22 Authorization Request Form must be attached to the hard copy of the RO and stored in the vehicle file.
^ The replacement tire(s) was purchased through Jaguar Tire Program.
^ Displaced tires must be retained for inspection and scrapping by your After Sales Market Manager.