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BMW 7 Series
E38
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Removal and installation of hydraulic modulator of ABS / ASC+T / DSC systems

Removal and installation of hydraulic modulator of ABS / ASC+T / DSC systems (BMW 7 Series E38)

Table of contents: ABS hydraulic modulator Brake pipes…↓ ABS/ASC T hydraulic modulator, DSC3…↓ Hydromodulator ABS/ASC T, DSC1,…↓

1. Turn off the ignition and disconnect the negative cable from the battery.

2. Pump out the brake fluid from the brake master cylinder reservoir.

ABS hydraulic modulator Brake pipes and mounting bolt for ABS hydraulic modulator

V (front wheels) — from the two-cavity GTZ of circuit V to the hydraulic modulator of circuit V (front wheel brake drive circuit)

H (rear wheels) — from the two-cavity GTZ of the H circuit to the hydraulic modulator of the H circuit (rear wheel brake drive circuit)

VR (right front wheel) — from the VR hydraulic modulator to the VR brake mechanism

VL (left front wheel) — from the VL hydraulic modulator to the VL brake mechanism

HR (right rear wheel) — from the HR hydraulic modulator to the HR brake mechanism

HL (left rear wheel) — from the HL hydraulic modulator to the HL brake mechanism

HA (rear axle) - from the HA hydraulic modulator to the rear wheel brake mechanism

1 - Membrane damper of the outlet channel

1 - Membrane damper of the outlet channel

1. Disconnect the central connector (1), loosen the nut (2) and disconnect the ground cable.

Do not allow brake fluid to enter electrical wiring connectors.

2. Disconnect the brake pipes, unscrew the bolt and remove the hydraulic modulator. If necessary, mark the pipes to avoid confusion during installation.

3. Installation is carried out in the reverse order. Finally, bleed the brake system.

ABS/ASC T hydraulic modulator, DSC3 (since 09.1998 issue.) Brake pipes and connectors for ABS/ASC T, DSC3 hydraulic modulator

1. Unlock the connector lock (1) in direction (2) and disconnect the connector by pulling it vertically upwards in direction (3). Disconnect the brake pipes, marking them first if necessary to avoid confusion during installation.

2. On models with DSC unlock and disconnect the connector (4) from the pressure sensor.

3. Unscrew the bolt (5) and remove the hydraulic modulator, avoiding bending or 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.) Brake pipes and connectors of the ABS/ASC T, DSC1, DSC2, DSC3 hydraulic modulator

1. Disconnect the central connector (1 on illustrations), loosen the nut (2) and disconnect the ground cable.

Do not allow brake fluid to enter electrical wiring connectors.

2. Disconnect the brake pipes, unscrew the bolt (see illustration Brake pipes and ABS hydraulic modulator mounting bolt) and remove the hydraulic modulator. If necessary, mark the tubes to avoid confusion during installation.

3. Installation is carried out in the reverse order. Make sure that the diaphragm damper of the outlet channel is installed correctly: the pin must enter the hole. Finally, bleed the brake system.

The text is based on materials from the website: «BMWMAN.ru»

This article is available at russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian

Article verified: Polikarpov Saveliy

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