Document ID: chunk:federal_register_of_legislation:F2010C00150:front:0:p12
Version: federal_register_of_legislation:F2010C00150
Segment Type: other
Provision Reference: 
Character Range: 31966–34846

such disconnection of the braking surfaces shall be permitted provided that it is only momentary, for instance, during a change of gear, and that both the service braking and the secondary braking continue to operate with the prescribed degree of effectiveness.  In addition, disconnections as aforesaid shall be permitted in the case of the parking braking system on condition that it is controlled exclusively by the driver from his driving seat by a system incapable of being brought into action by a leak.

         5.2.11. Wear of the brakes must be capable of being easily taken up by means of a system of manual or automatic adjustment. In addition, the control and the components of the transmission and of the brakes must possess a reserve of travel and, if necessary, suitable means of compensation such that, when the brakes become heated, or the brake linings have reached a certain degree of wear, effective braking is ensured without immediate adjustment being necessary.

         5.2.11.1. Wear adjustment shall be automatic for the service brakes. Automatic wear adjustment devices shall be such that after heating followed by cooling of the brakes, effective braking is still ensured. In particular the vehicle shall remain capable of normal running after the tests conducted in accordance with annex 3, paragraph 1.5. (Type-I test).

         5.2.11.2. It shall be possible to easily check this wear on service brake linings from the outside or underside of the vehicle utilizing only the tools or equipment normally supplied with the vehicle, for instance, by the provision of appropriate inspection holes or by some other means. Alternatively, acoustic or optical devices warning the driver at his driving position when lining replacement is necessary are acceptable. The removal of front and/ or rear wheels is permitted for this purpose. The yellow warning signal specified in paragraph 5.2.21.1.2. below may be used as the optical warning signal.

         5.2.12. In hydraulic-transmission braking systems, the filling ports of the fluid reservoirs must be readily accessible; in addition, the receptacles containing the reserve fluid must be so designed and constructed that the level of the reserve fluid can be easily checked without the receptacles having to be opened, and the minimum total reservoir capacity is equivalent to the fluid displacement resulting when all the wheel cylinders or calliper pistons serviced by the reservoirs move from a new lining, fully retracted position to a fully worn, fully applied position. If these latter conditions are not fulfilled, the red warning signal specified in paragraph 5.2.21.1.1. below shall draw the driver's attention  to any fall in the level of reserve fluid liable to cause a failure of the braking system.

         5.2.13. The type of fluid to be used in hydraulic transmission braking systems