Suspension - Vehicle Lowers Overnight

No.: LM204-006

Issue: 1

Date: August 16, 2006

SECTION: 204-05 - SUSPENSION SYSTEM

Vehicle Lowers Overnight - Air-Spring Leak

AFFECTED VEHICLE RANGE:

Range Rover (LM) VIN: up to 4A160029

CONDITION SUMMARY:

FRONT AIR-SPRING LEAK CAUSES VEHICLE RIDE HEIGHT TO LOWER OVERNIGHT

A customer may report a concern that the vehicle ride height lowers overnight.

Situation:

No obvious system leaks may be found, however, vehicles in a higher mileage range of 30,000-60,000 miles may develop hairline cracks in the rubber material of the front air-spring. The cracks are likely located at the point where the air-spring rolls over the plastic base.

Action:

Should a customer express concern regarding the above, refer to the Repair Procedure detailed in this bulletin to verify the cause and replace the air-spring as necessary.





PARTS





WARRANTY

REPAIR PROCEDURE

REPLACE FRONT AIR-SPRING

NOTE:
An air leak in the rubber material may be verified using a suitable leak detection fluid.

1. Verify which front air-spring(s) has a leak and requires replacement.





NOTE:
The latest specification air-spring assembly is identified by the manufacturer markings printed on the air-spring air bag as shown in Figure 1.

2. Verify the correct specification air-spring assembly has been ordered from the markings as shown in Figure as follows:

^ Right-hand air springs must start with DC01.

^ Left-hand air springs must start with DB01.

NOTE:
GTR lookup sequence is as follows:

GTR Home > NAS > Service Information/LM - Range Rover/2004 > Workshop Manuals > Range Rover - Workshop Manual - Service Procedures > Bookmark section "60 - Front Suspension" link "60.21.01 Air spring assembly"

3. Refer to Global Technical Reference (GTR) Range Rover (LM) Workshop Manual Section 60 - Front Suspension, operation 60.21.01 Air spring assembly and replace the front air spring assembly.





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