PDI Tire Pressure Adjustment Procedure (SSM56217)

WARNING: This page is about the LR4 Base, which is a different variant/trim than selected.

Publication date: 2012-03-23
Reference number: SSM56217

PDI TIRE PRESSURE ADJUSTMENT PROCEDURE

TECHNICAL SERVICE BULLETIN

Reference Number(s): SSM56217, Date of Issue: March 23, 2012

LAND ROVER:	Range Rover Evoque; LR2; New Range Rover; Defender; LR4
SECTION:	Chassis
AFFECTED VEHICLES:	Range Rover Evoque; LR2; New Range Rover; Defender; LR4

SYMPTOM

306000 Tires/Wheels

Issue: All Land Rover vehicle tire pressures are set to transit pressures at Manufacturing prior to despatch to market to reduce the severity of flat spots forming on the circumference of the tire surface during storage. The transit pressures are listed below:

Defender - 3.4bar (50 lbf/in² )

Freelander 2/LR2-3.6 bar (53 lbf/in² )

Discovery 3/LR3-3.6 bar (53 lbf/in² )

Range Rover Evoque3.6 bar (53 lbf/in² )

Range Rover Sport -3.6 bar (53 lbf/in² )

Range Rover - 3.6 bar (53 lbf/in² )

CONTENT

Cause: When tire pressures are adjusted from high pressure (transit) to normal recommended pressures, the rapid pressure change will cause the resultant tire pressure figure to increase by up to 0.4 bar (6 psi) over a period of 2 minutes.

Action: When reducing the tire pressure from transit to normal pressures, the technician should initially drop the pressure to approximately 0.1 to 0.3 bar (2 to 4 PSI) below the vehicle's recommended pressure. Then after 2 minutes re-check and set to the recommended vehicle pressure using a calibrated pressure gauge.