Volkswagen Golf Service & Repair Manual: Fitting control unit to hydraulic unit

Volkswagen Golf Service & Repair Manual / Brake system (hybrid) / ABS, ADR, TCS, EDL, ESP / Control unit and hydraulic unit / Fitting control unit to hydraulic unit

Special tools and workshop equipment required

ESD workplace -VAS 6613-

Torque screwdriver -V.A.G 1624-

Torx bit T25

Severe shocks (e.g. dropping, impact) may destroy control unit. Control unit must not then be used.

Clean surfaces before assembling.

–	Place control unit on hydraulic unit without canting it.

–	Tighten hydraulic unit and control unit alternately in 2 stages to specified torque using new Torx bolts provided.

Note

The threads of the hydraulic unit for securing the control unit must not be recut. If the threads are damaged (bolts difficult to turn in by hand or cannot be tightened to the specified torque), hydraulic unit must be renewed.

Specified torque

Tighten new Torx bolts alternately in 2 stages

1. stage: temporary tightening torque: 1 Nm to 1.5 Nm (to allow the seal to settle).

2. stage: final specified torque: 2.5 Nm.

→ Chapter „Assembly overview - control unit and hydraulic unit“

Note

A new control unit may be mounted on an existing hydraulic unit max. three times to guarantee impermeability of the elastic seal.

A control unit which has already been operated in a vehicle must not be installed a second time.

Fitting control unit to hydraulic unit

Separating control unit from hydraulic unit

Special tools and workshop equipment required ESD workplace -VAS 6613- Torx bit T25 I ...

Sensors

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