Procedures

General Repair Information

The maximum possible care, cleanliness and proper tools are essential to ensure satisfactory and successful steering gear repairs. Understandably, general safety guidelines apply when performing repairs.

A series of applicable general notes for individual repair procedures - otherwise listed several times at many points in the repair information - has been collected here. They apply for this repair information.

Steering Gear

• Thoroughly clean connecting points and their surrounding areas before loosening.

• When installing steering gear, make sure centering sleeves are correctly seated between console and steering gear.

• Place removed parts on a clean surface and cover to prevent contamination. Use foils and paper. Do not use fluffy cloths!

• Only install clean components: Only unpack replacement parts immediately prior to installation.

• Use exclusively lubricants and sealants marked with part numbers.

• Carefully cover over opened components or seal, if repairs are not carried out immediately.

Gaskets and Seals

• Always replace seals and gaskets.

• After removing seals, inspect contact surface on housings and shafts for burrs and damage and repair if necessary.

• Remove all residual sealant of fluid seals from sealing surfaces, no sealant residue must enter the steering gear housing when doing this.

Bolts and Nuts





• Loosen and tighten the bolts and nuts of covers and housings in a diagonal sequence.

• Do not cant but loosen and tighten especially sensitive parts in diagonal manner in stages, e.g. servo motor with control module.

• Torque specifications for unoiled bolts and nuts are given.

• Always replace self-locking nuts and bolts.

Electrical Components

Surely everyone has been shocked at one time or another when coming into contact with a metal object. The reason for this is the build-up of static electricity in the human body. This charging can lead to malfunctions by touching electrical components in the steering gear and the steering column.

- Touch a grounded object - for example a water pipe, heating pipe, metal carrier or a vehicle hoist - before working on electrical components. Do not make direct contact on connector terminals.

Guided Fault Finding, OBD and Test Instruments





• Before performing repairs on electro-mechanical steering, the malfunction cause must be determined as exactly as possible using Vehicle Diagnostic, Testing and Information System (VAS 5051) in operating modes Guided Fault Finding, Vehicle Self-Diagnosis and Test Instruments.