| Description and Operation The Transit `95 braking system is hydraulically operated on all front and rear wheels. The dual line system used has separate hydraulic circuits for front disc and rear drum brakes. Should one circuit fail, the other circuit is unaffected and the vehicle can be brought to a halt. The brake circuits are split either vertically or diagonally, depending on the variant. the pipe routing may be summarised as follows: Vertical split system – master cylinder primary port to rear brakes, secondary port to front brakes. Diagonal split system – master cylinder primary port to left hand rear and right hand front brake, secondary port to right hand rear and left hand front brake. All variants have front disc brakes and rear drum brakes. All the brakes are self adjusting during the foot brake operation. To reduce pedal effort a servo unit of the suspended vacuum type is fitted between the brake pedal and the master cylinder. The master cylinder is operated by the brake pedal and is a tandem type to provide separate braking circuits. Vehicles equipped with vertically split systems have the primary chamber feeding the rear brakes and the secondary the front brakes. The brake fluid is housed in a semi‐transparent reservoir which contains a separation baffle. The baffle ensures that, in the event of a fluid leak in one circuit, fluid is still available to operate the other. Operation of the foot brake causes the master cylinder pistons to be pushed along the bore against the fluid. As As the brake fluid is incompressible movement is transmitted along the length of the brake pipes. The total master cylinder displacement is divided between the split braking circuits. The servo unit is designed to provide controlled power assistance during vehicle braking. For petrol variants vacuum servo assistance is created by the vacuum within the inlet manifold. Diesel variants create vacuum from a pump driven by the crankshaft pulley. Vacuum is applied to both sides of the servo diaphragm and by admitting atmospheric pressure to the brake pedal side of the diaphragm, power assistance is obtained and pedal effort reduced. Should servo vacuum failure occur the push rod still acts mechanically to provide adequate braking but with a higher pedal effort. | 
