34 52 516 Removing and installing/replacing DSC control unit: Notes
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IMPORTANT:
Read and comply with notes on PROTECTION AGAINST DAMAGE FROM ELECTROSTATIC DISCHARGE
(ESD protection).
Necessary preliminary tasks:
- Remove HYDRAULIC UNIT .
IMPORTANT:
Maintain conditions of absolute cleanliness.
Unclip brake lines (1) from holder (2).
Unfasten brake lines (1).
Installation note:
Tightening torque: see 1AZ in 34 32 BRAKE LINES .
IMPORTANT:
Risk of damage to the contacts when removing and installing the hydraulic unit.
Release screws (1) and carefully detach DSC control unit (2) towards top.
IMPORTANT:
Cleaning with compressed air, chemical solvents and sharp-edged objects is not permitted.
Do not touch pressure sensor contacts (2) with your fingers or clean the contacts.
Do not touch pressure sensor contacts (2) with your fingers or clean the contacts.
If necessary, clean sealing surface (1) with a plastic scraper or a fluff-free cloth.
IMPORTANT:
Do not touch valve coils (1) and pressure sensor contact springs (2) with your fingers, do not clean or readjust these components either.
Check gasket (3) for damage. If damaged, replace DSC control unit (4).
Installation note:
Make sure screws are inserted evenly and DSC control unit rests on hydraulic unit.
Replace screws.
Observe tightening sequence (1-4).
Tightening torque: see 1AZ in 34 51 SLIP CONTROL SYSTEM (DSC) .
Replacement:
- Carry out programming/encoding
- Brake line mix-up test:
- Function check of hydraulic unit