General Repair Information
To perform a problem-free and successful steering gear repair, extreme caution and cleanliness, as well as properly functioning tools are an important requirement. 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. Only use lint-free cloths!
- Install clean parts only: Remove the replacement part from its packaging just before installing it.
- Use exclusively lubricants and sealants marked with part numbers.
- Carefully cover or seal open components, if repairs are not carried out immediately.
Gaskets and Seals
- Always replace the gaskets and seals.
- 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 bolt and nut from the covers and housings diagonally.
- Do not cant but loosen and tighten especially sensitive parts in diagonal manner in stages, for example servo motor with control module.
- Tightening specifications for non-lubricated 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 charge can lead to functional problems by touching the electrical components of steering gear.
-- Touch a grounded object, for example a water pipe 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 the electro-mechanical steering gear, determine the cause of the damage as closely as possible using the Vehicle Diagnostic Tester in the "Guided Fault Finding", "Vehicle Self-Diagnosis" and "Measurement" modes.