9000 Hatchback L4-2290cc 2.3L DOHC Turbo EFI (1994)
Hydraulic Control Assembly - Antilock Brakes: Description and Operation
With Mark II ABS System
Type Of Gas: Nitrogen
Gas Pressure: 80 Bar (1160 psi) (at 20°C)
Minimum Gas Pressure: 40 Bar (580 psi)
Capacity Liters: 0.25
Pressure Range, Operating Pressure: 135-190 Bar (1958-2755 psi)
Maximum Pressure Loss: /10 Min 110 Bar (1145 psi)
The pressure accumulator, which is screwed to the pump housing, is divided into two spaces by a rubber diaphragm.
One of the chambers is sealed and filled with nitrogen at a basic pressure of 80 bar (11160 psi) at 20 0 C (680F). The minimum permissible pressure is
40 bar (580 psi). If the pressure drops below this the pressure accumulator must be changed.
Brake fluid is pumped to the other chamber from the high-pressure pump via the non-return valve. This compresses the nitrogen and the space containing
