Technical Data

Electrohydraulic unit

Nominal voltage 12V
Operating voltage 9...15V
Constant load 18A (at 12V)


Radial piston pump

Regulating time from minimum to maximum


pressure 85 to 95 seconds at 20~C (68~F)


Tank capacity

M5 and M6 1.5 ltr.
Hydraulic oil "LH M" (BMW P/N 81 22 9 407 025)
Oil level with minimum pressure of 30 bar between "min." and "max." marks
High pressure switch:
Cutoff pressure when pressure is increasing 110 +/- 12 bar
Low pressure switch:
Cutoff pressure when pressure is dropping 30 + 4 bar
- 2


Regulating Switch

Damping time:
After each zero action of lever on regulating switch any regulation will be prevented for 5 + 1.5 seconds.

For acceleration above 0.2 +/- 0.05 G, three (mercury) acceleration transmitters stop regulation:

1 for forward acceleration and 2 for lateral acceleration

A connecting wire in the brake light circuit prevents regulation while braking (stopping) car.


Pressure Reservoirs

Volume 450 cc
Charging pressure (pre-filled with nitrogen) 23 +/- 0.5 bar