Notes In Case Of An Externally Invisible Brake Fluid Loss - Ah42.10-P-9406-02A
Model 907
ADAPTIVE BRAKE (ABR)
If the loss of brake fluid is not visible from the outside, check whether brake fluid has entered the brake booster through a leaky secondary seal in the master cylinder. The master brake cylinder must be removed for testing.
There must be no brake fluid in the brake booster. Otherwise the brake booster must be replaced.
Model 907
With ADAPTIVE BRAKE (ABR) Are more than 100 cm3 Brake fluid in the brake booster, the brake booster must be replaced.
The rolling diaphragm in the brake booster is brake fluid, but not the reaction disk and the poppet valve in the control unit. Only draw off brake fluid when the brake booster is installed. With an amount of up to 100 cm 3 , when the brake booster is installed, no brake fluid can reach the reaction disk or poppet valve.