Drive line vibration

DRIVE LINE VIBRATION

Model

New Range Rover all derivatives

Affected vehicles

300190 to 310031

Date

1995-10-04

Reference

04/10/95

Bulletin text

Vehicle Vibration (Drive Line)

MODEL

New Range Rover all derivatives

DETAIL

A small number of reports have been received through the Nerve Centre front desk that have highlighted vibration felt through the vehicle under certain running conditions. Due to the nature/demographics of the customer and vehicle there is the possibility that the customer could identify this issue as a potential irritant during early life of vehicle ownership.

Investigations by Land Rover engineers have resulted in specific areas on the vehicle evaluated under predetermined running conditions that can be checked to ensure that they meet original build criteria.

NOTE: The front harmonic damper kit is for petrol derivatives only

ACTION REQUIRED

In the event of a customer complaint, follow the procedure below to eliminate any potential concern.

PARTS INFORMATION

STC 2789 Rear harmonic Damper Kit

STC 3105 Front harmonic Damper Kit 1 off FS 112281L Fixing bolts 2 off

PROCEDURE

Refer to table on following page.

Issue 2 04/10/95

NRR/51/02/95/EN/

AFFECTED VEHICLES

LP 300190 to 310031 LH LJ LD

WARRANTY

Normal warranty policy and procedures apply.

COMP. CODE

Refer to codes manual

SRO

Refer to individual operations on following page to identify specific repair operation codes.

Vehicle Vibration (Drive Line)

MODEL

New Range Rover all derivatives

RUNNING CONDITIONS

30/35 MPH Boom/Vibration. Check security of spare wheel to ensure it is securely clamped down.

Fit harmonic damper to rear axle differential 60 MPH Vibration. (Refer to bulletin NRR 51/02/95) Petrol models only. Dampers are being fitted on all production vehicles from Vin number 310031

45 MPH Vibration Fit Harmonic Damper to front Axle.

Advise customer to use motorway ride height 70/75 MPH Vibration felt through settings at motorway speeds. floor, pedals and seat when vehicle is in standard ride height.

Check wheel balance, rebalance as 70/85 MPH Vibration (Low necessary. frequency rumble) felt through floor and seat.

GENERAL CHECKS Check tyre pressures-28 lb/in front - 38 lb/in rear.

Check propellor shafts for excess underbody wax.

Ensure the body is clear of the chassis and there are no trapped components between body and chassis.

Ensure body mounts are torqued correctly.40-50 Nm

Check that both differential and transfer gearbox drive flanges are within specification. (Refer to bulletin NRR 51/01/95/EN

Check that Electronic Air Suspension ride height settings are correct-Refer to TestBook. (check height sensors for security)

Under extreme conditions it may be necessary to substitute propshafts and transmission brake drum. If this course of action is undertaken, retest vehicle, if no change then re-fit original proshafts and transmission drum to the vehicle.

04/10/95 NRR/51/02/95/EN

AFFECTED VEHICLES

LP 300190 to 310031 LH LJ LD

SOLUTION SRO AND TIME

SRO 60.25.89/26 00.05 hour

See bulletin NRR 51/02/95

SRO 54.15.89/26 00.30 hour

Not applicable

SRO 60.25.11 00.60 hour

SRO AND TIME

Not applicable SRO 47.15.89/26 00.10 hour

SRO 76.10.89/35 00.05 hour SRO 76.10.89/34 00.40 hour

Refer to bulletin NRR 51/01/95/EN

SRO 60.50.37 00.60 hour

Refer to SRO manual for individual times.