Range Rover County LWB (LH) V8-4.2L (1993)
Radius Arm Bushing: All Technical Service Bulletins
Steering Wheel - Vibration
14/01/94
57/02/94/US
SUBJECT
Steering Kickback (Vibration)
Electronic Air Suspension (EAS)
AFFECTED VEHICLES
Electronic Air Suspension Derivatives
MODEL
Range Rover
DETAIL
Prolonged steering wheel vibration over uneven road surfaces, after crossing a ridge or travelling on a poor condition road surfaces. The resultant action
of the steering is that initial sudden steering movement does not cease after the first disturbance but is gradually damped out over a series of steering
wheel movements. Typically four in quick succession. The steering wheel movement reduces in severity with each oscillation.
NOTE: This Bulletin replaces the previous Bulletin P93/57-003
NOTE: Radius arm bushes NTC 6860 were introduced onto EAS vehicles at VIN LH 642119
ACTION REQUIRED
In the event of customer concern carry out the procedure detailed below.
PARTS INFORMATION
NTC 6860 Front radius arm bushes.
STC 1473 Front shock absorbers.
STC 1474 Rear shock absorbers.
RTC 6825 Harmonic damper kit.
PROCEDURE
In the event of customer concern carry out the preliminary checks 1 to 7.
NOTE: When replacing radius arm front bushes NTC 6781 with NTC 6860 the harmonic damper kit must also be fitted if not already fitted. (Note NTC
6860 have been fitted as standard on all EAS vehicles since VIN LH 642119). If the vibration still exists on vehicles fitted radius arm bushes NTC 6860,
fit shock absorber kits.
WARRANTY