Freelander’s drivetrein begins with a generally troublefree, front drive Rover gearbox that freelander gets radical, and problematic. The gearbox feeds into the intermediate Reduction Drive IRD which distributes drive to the front wheels via a front differential, and also turns the drive through 90 degrees to power the rear propshafts, and ultimately the rear wheels.
There are two propshafts, the front have the CV joint connected to the IRD rear output flange. The rear of this prop is splined to a viscous coupling unit VCU which sits in two support bearings bolted to the underside of the vehicle. The VCU output shaft is splined into the front end of the rear propshaft, and the rear end of this is flange bolted to the rear differential. These components the rear drivetrain have been blamed for the past problems, and they are the past we’re focusing on.
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