If there is a drumming or humming sound coming from the rear of your Freelander 2 or Range Rover Evoque, the chances are the rear diff bearings are failing. This is very common on the 2007-2011 models and can occur even in very low mileage vehicles but normally over 70k. According to Land Rover The damage is caused due to the way in which the Haldex coupling unit applies torque when moving away from stand still or during slow speed manoeuvring.We actual believe the main cause of the failure is the original size / load rating of these nose bearings where designed and manufactured to inferior to take the preload .This is why they become very problematic and starting failing. At WE ARE DIFFS we replace the bearings with new upgraded OE heavy duty bearings that will be a lot stronger greatly improving the differentials life span.
From 2009 models on wards the Haldex unit was also upgraded to the 4th generation, which if taken to a Land Rover dealer will accept updated software (early models have the 3rd generation fitted which cannot be re-flashed) which Land Rover state will also reduce the load on the pinion.
We highly recommend changing the Haldex unit when replacing the old rear differential. When you put a new component on to an old Haldex unit it can cause big problems and fail again.
A drumming or whirring noise from the front foot-well area of the car, that can then if left develop into a banging or winning noise is a symptom of the PTU ( known as power transfer unit, front diff or IRD) nose bearing failing. If treated quickly enough the unit can be fully reconditioned with new bearings and seals throughout, but if left too long will fail catastrophically. The splines from the gearbox to this unit also wear, if the transfer box is failing it can also cause damage to this spline.
At WE ARE DIFFS we recondition the front and back differentials to the very highest standard using genuine OEM parts, so your beloved Freelander 2 will keep going on and on.
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