Location and repair
The DSC unit is located in the vehicle underbody, set back somewhat from the wheel arch. That location applies to both left and right-hand-drive vehicles.
Scheme 20
| Index | Explanation |
|---|---|
| 1 | Quick-release hydraulic pipe unions, 4 off |
| 2 | Screw-fit hydraulic pipe unions, 6 off |
| 3 | DSC control unit |
| 4 | DSC valve manifold |
| 5 | DSC pump motor |
| 6 | DSC unit mounting bracket |
| 7 | Bolt fixing with vibration damper for DSC unit |
| 8 | Screw-fit hydraulic pipe unions, 2 off |
INDEX REFERENCE CHART
Six short lengths of hydraulic pipe are connected to the DSC unit by screw-fit unions.
Four of those hydraulic pipes run upwards from the hydraulic modulator and terminate at a block with quick-release unions. They are connected by those quick-release unions to the pipes running off to other parts of the vehicle. Specifically, that is the two pipes to the left and right front brakes and the two pipes to the tandem master cylinder.
The two remaining hydraulic pipes run to the rear. They are connected by quick-fit unions to the pipes running off to other parts of the vehicle. In this case, they lead to the left and right rear brakes.
If the DSC unit has to be replaced, first of all the vehicle underbody trim has to be removed in the appropriate places. When the DSC unit is removed, the six short lengths of hydraulic pipe referred to above are removed with it. Therefore, before removal, the four quick-release unions (4) and the two screw-fit unions (8) have to be disconnected. The short lengths of hydraulic pipe subsequently have to be removed and fitted to the new DSC unit.
Only after the DSC unit has been removed can the DSC control unit be separated from the hydraulic modulator, if necessary, and new one fitted.
The braking system must always be bled whenever the DSC unit has been removed and refitted/replaced.
The precise procedures for the individual repair operations in connection with the DSC unit are described in the Repair Instructions.