2. Pump out the brake fluid from the GTZ reservoir.
ABS hydraulic modulator Brake pipes and ABS hydraulic modulator mounting bolt
V (front wheels) - from the two-cavity GTZ of circuit V to the hydraulic modulator of circuit V (front wheel brake circuit)
H (rear wheels) - from the dual-cavity GTZ circuit H to the hydraulic modulator circuit H (rear wheel brake circuit)
VR (right front wheel) — from hydromodulator VR to brake mechanism VR
VL (left front wheel) - from the hydraulic modulator VL to the brake mechanism VL
HR (right rear wheel) — from hydromodulator HR to brake mechanism HR
HL (left rear wheel) — from hydraulic modulator HL to brake mechanism HL
HA (rear axle) - from the hydromodulator HA to the brake mechanism of the rear wheels
1 - Membrane damper of the discharge channel
1. Disconnect the center connector (1), give the nut (2) and disconnect the mass cable.
Do not allow brake fluid to enter the wiring connectors.
2. Disconnect the brake pipes, unscrew the bolt and remove the hydraulic modulator. If necessary, mark the tubes so as not to mix them up during installation.
3. Installation is carried out in the reverse order. Finally, bleed the brake system.
Hydromodulator ABS/ASC T, DSC3 (since 09.1998 issue.) Brake pipes and hydraulic modulator connectors ABS/ASC T, DSC3
V (front wheels) - from the two-cavity GTZ of circuit V to the hydraulic modulator of circuit V (front wheel brake circuit)
H (rear wheels) - from the dual-cavity GTZ circuit H to the hydraulic modulator circuit H (rear wheel brake circuit)
VR (right front wheel) — from hydromodulator VR to brake mechanism VR
VL (left front wheel) - from the hydraulic modulator VL to the brake mechanism VL
HR (right rear wheel) — from hydromodulator HR to brake mechanism HR
HL (left rear wheel) — from hydraulic modulator HL to brake mechanism HL
HA (rear axle) - from the hydromodulator HA to the brake mechanism of the rear wheels
1 - Membrane damper of the discharge channel
1. Unlock connector lock (1) in the direction (2) and disconnect the connector by pulling it in the direction (3) vertically up. Disconnect the brake pipes, if necessary, pre-marking them so as not to confuse during installation.
2. On models with DSC unlock and disconnect the connector (4) from the pressure sensor.
3. Remove the bolt (5) and remove the hydraulic modulator, avoiding bending and deformation of the brake pipes.
4. Installation is carried out in the reverse order. Finally, bleed the brake system.
Hydromodulator ABS/ASC T, DSC1, DSC2, DSC3 (until 09.1998 issue.) Brake pipes and hydraulic modulator connectors ABS/ASC T, DSC1, DSC2, DSC3
V (front wheels) - from the two-cavity GTZ of circuit V to the hydraulic modulator of circuit V (front wheel brake circuit)
H (rear wheels) - from the dual-cavity GTZ circuit H to the hydraulic modulator circuit H (rear wheel brake circuit)
VR (right front wheel) — from hydromodulator VR to brake mechanism VR
VL (left front wheel) - from the hydraulic modulator VL to the brake mechanism VL
HR (right rear wheel) — from hydromodulator HR to brake mechanism HR
HL (left rear wheel) — from hydraulic modulator HL to brake mechanism HL
HA (rear axle) - from the hydromodulator HA to the brake mechanism of the rear wheels
1 - Membrane damper of the discharge channel
1. Disconnect the center connector (1 on illustrations), give the nut (2) and disconnect the mass cable.
Do not allow brake fluid to enter the wiring connectors.
2. Disconnect the brake pipes, remove the bolt (see illustration Brake pipes and ABS hydraulic modulator mounting bolt) and remove the hydraulic modulator. If necessary, mark the tubes so as not to mix them up during installation.
3. Installation is carried out in the reverse order. Make sure that the outlet channel diaphragm damper is installed correctly: the pin must fit into the hole. Finally, bleed the brake system.