(ABS Pressure Reduction Control Function - GF42.30-P-3300GG)
MODEL 463.### ## up to 127356 up to 31.8.01 with CODE (B02) ABS brake system
ABS pressure reduction control mode
(ABS shown on models 463.308/330/331 with 2/2-way valves)
The ABS control module introduces the pressure reduction phase from the wheel speeds and slip values. The pressure reduction phase is introduced by actuating (opening) the solenoid valves (y7, y9 and y21). The solenoid valves (y6, y8 and y8) remain actuated in this control phase (closed). During the pressure reduction phase brake fluid flows back into the return pump (m 1) via the accumulator (11).
From there the return pump delivers the brake fluid in both brake circuits back to the brake master cylinder against the existing pressure.
There is a muffler (10) for each brake circuit to dampen delivery noise.
| ABS normal mode and pressure build-up control function | GF42.30-P-3100GG | ||
| ABS hold pressure control function | GF42.30-P-3200GG | ||
| Location/task/design/function of ABS hydraulic unit | GF42.30-P-4000GG | ||
| Location/task/design/function of ABS control module | GF42.30-P-4500GG |