News Technical Service Bulletins

Land Rover Roll Bar Gets Better Diagnosis

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Check for leaks at the pipe to the actuator interface.

This bulletin applies to 2014 Land Rover Range Rover Sport vehicles. From inspecting market returned parts, it has become apparent that multiple dynamic response roll bars have been replaced due to reported fluid leaks.

Upon further inspection, no faults are found with the returned roll bars. It is believed that many of the leaks reported could be coming from the piping, seals, interface or tightness of the bleed screw.

If a leak is in the area of the pipe to actuator interface, disassemble the joint and inspect the O-ring/washer and replace, if necessary. Confirm that there are no burrs/sharp edges at the end of the pipe. Align the pipe spigot with the actuator and reassemble. Make sure that the pipe mounting block is flat to the actuator surface and torque to 22Nm.

If a leak is around the interface of the bleed screw to the actuator, then confirm that torque is 15Nm.

If the leak is where the piston shaft comes through the actuator body, take into account that it is normal for grease to be present on the piston shaft, which does not constitute a leak. Excessive leakage can suggest that there is seal damage.

Once the above points have been confirmed, reassemble the system, clean with brake cleaner and run a hydraulic self-test before re-inspection for leaks.

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Check for leaks around the bleed screw and confirm bleed screw tightness at 15Nm.

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A slight amount of grease on the piston shaft is normal.

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