Humming noise electronic air suspension

HUMMING NOISE ELECTRONIC AIR SUSPENSION

Model

New Range Rover

Affected vehicles

All Derivatives

Date

1994-12-60

Reference

60/12/94

Bulletin text

SUBJECT Humming Noise From Electronic Air Suspension Compressor

MODEL AFFECTED VEHICLES

New Range Rover All Derivatives

DETAIL

It has been found that the air compressor mounting torque is incorrectly specified in the workshop manual the incorrect torque is shown as 7 Nm , the figure should read 1.5-2.0 Nm.

These fixings are torqued to the correct figure on initial assembly at the Land Rover factory, therefore this bulletin is only relevant to vehicles having the air compressor removed and replaced in service.

As a result of over torquing on these fixings, a ‘humming’ noise may be heard within the vehicle whilst the air compressor is running.

ACTION REQUIRED

Upon customer complaint of a droning noise, check air compressor fixings for the correct torque figure.

PARTS INFORMATION

Not applicable

PROCEDURE

Refer to the workshop manual section 60. Air compressor, service repair number 60.50.10

NOTE: Please update the workshop manual until such time as a new page is issued

60/12/94

NRR/60/13/94/EN

WARRANTY

Not applicable

COMP. CODE

Not applicable

SRO

Not applicable