The brake regulators come in two variations, either single or twin brake force regulators. These regulators are controlled by independent control units that are contained in one casing and experience spring load from a lever. This lever regulates both rear axle brake circuits. In the case of a twin brake force regulator, should one of the circuits fail the other will still be in operation as they both work independently of each other. 

The role of brake regulators in the vehicle is to ensure that the braking force is evenly distributed between the front and rear wheels. The brake regulators do this by taking the load of the vehicle into account when optimising brake performance and establishing front-to-rear bias as necessary.  

The brake regulators are essential in the vehicle and failure can affect the braking ability of the vehicle.  It is therefore necessary to replace a faulty brake regulator as soon as failure is noticed. 

Damage to the brake regulators could be caused by failure of the attached linkage. The linkage is prone to wear from repeated use and can become stuck. This may be corrected with lubricant.