Range Rover manual Brakes system

Description The brake system fitted to Range Rovers is of the I.H. split type. Early 1987 Range Rover vehicles were fitted during manufacture with an Automotive Products (AP) master cylinder and servo assembly, together with associated brake pipes and pedal box assembly. The brake failure warning system on the AP type master cylinder is a Pressure Differential Warning Actuator (P.D.W.A.) switch, which is activated when the shuttle valve moves along its bore due to pressure d i f f e r e n t i a l i n e i t h e r t h e p r i m a r y o r secondary circuits caused by fluid loss or seal failure. The result of the shuttle valve movement is to illuminate a brake failure warning light in the instrument binnacle. Later 1987 models are fitted with an uprated Lucas Girting type LSC 115 servo and 25,4mm AS/AS master cylinder plus associated brake pipes and pedal box assembly. The brake failure warning system on the Lucas Girling type is a Fluid Level Warning Indicator (F.L.W.I.) which is incorporated into the fluid reservoir cap and is activated when fluid loss in the reservoir is sufficient so that the float in the switch drops and in turn illuminates a brake failure warning light in the instrument binnacle.