Description and principle of operation (Freelander 2)

Element Location

Pos.	spare part no	Name
1	-	Active clutch
2	-	Differential
3	-	Active clutch module

Review

The differential works in conjunction with the active clutch, transferring force to the rear axle. 4th generation active clutch from model year 2009.



Vehicles from model year 2009 are equipped with a modified 4th generation active clutch. The new Active Clutch features an improved design over the 3rd Generation Clutch and provides the following benefits:

• Reduced base torque at high differential speeds
• Torque activation dependent on differential speed
• Precise torque limiter
• Energy stored in the battery
• Reduced maximum current
• Faster response

Differential

The diff block features a low offset helical bevel hypoid design based on a 167mm ring gear with a ratio of 2.58:1. The design of the differential gears and the 4 bearings that control the resultant torque of the unit on the rear subframe ensures excellent efficiency and smooth operation of the differential unit.

The torque applied to the differential is controlled by an active clutch that is mounted in a cavity at the front of the cast aluminum differential case, which also acts as an oil reservoir for the clutch.