Viscous Coupling: Service and Repair

Tools

Removing The Viscous Clutch





1. Remove the cardan shaft, refer to Drive/Propeller Shafts, Bearings and Joints.
2. Remove the final drive, front, refer to Differential, Service and Repair.





3. Clamp final drive into the vice with special tool holding rails VW 457, drain oil and remove the long-neck pipe.
A - Special tool holding rails VW 457
4. Remove snap ring and take out viscous clutch with supporting ring.

Installing The Viscous Clutch
Install in reverse order, observing the following points:





1. Insert supporting ring and fit snap ring with special tool assembly aid 9638.
A - Special tool assembly aid 9638
B - Snap ring
2. Always replace O-ring for long-neck pipe and coat with Vaseline.
3. Uniformly tighten fastening screws for long-neck pipe in diagonally opposite sequence.
4. Fill in oil for final drive, refer to Differential Fluid, Service and Repairs..

Tightening Torques
Location Thread Tightening torque Nm (ft. lbs.)
Long-neck pipe on final drive M8 x 36 25 Nm (18 ft lb.)
Front transmission support
on final drive M10 65 Nm (48 ft lb.)
Oil drain plug on final drive M18 x 1.5 28 Nm (21 ft lb.)