| Indications regarding repairs to the ABS |
WARNING | Basically, the antilock braking system does not require maintenance. |
| Inspections, fitting and repairs must only be carried out by personnel specialized in these systems. |
| If the indications described in the Repair Manual are not respected, damage may occur in the braking system and vehicle safety may be affected. |
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| ABS: Diagonal distribution system, double circuit hydraulic brake with electronic differential lock. The vacuum servo brake pneumatically increases the braking force. |
| The mechanical braking force distribution for vehicles with the Mark 60 ABS has been replaced by a software in the control unit, especially designed to determine the braking forces between axles. |
| Faults in the ABS system do not affect the conventional brake system or the servo brake. The conventional brake system remains functional even without ABS. However, a change in braking behaviour must be reckoned with. When the ABS indicator is lit, using the brakes could cause the rear wheels to lock up before expected. |
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| Before making repairs to the antilock braking system, locate the problem using the self-diagnosis. |
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| Release the connector from the hydraulic unit only when the engine ignition is out of service. |
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| The hydraulic braking system must be purged of air after being manipulated. For systems with ABS/ESP Mark 60: The bleeding of air from the system - SAT 1175B- must be done with the brake bleeder → Chapter. |
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| Always strictly follow the relevant safety measures and instructions when handling the brake liquid. |
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| Work on the ABS system demands the highest levels of cleanliness; under no circumstances should auxiliary materials that contain mineral oils such as oil, grease etc. be used |
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| Make sure that brake fluid does not enter the connectors. |
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| Before soldering electronic connections they should be thoroughly cleaned, but do not use strong abrasive cleaning products such as brake cleaner, petrol, solvents or similar products. |
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| When the repair work is not carried out immediately, protect the parts with care and keep them covered. Use the plugs of the repair set for this purpose, part number → Spare parts catalogue. |
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| Place removed parts on a clean surface. |
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| When the brake system is open, the vicinity of the location should not be cleaned using compressed air. As a safety measure, do not move the vehicle. |
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| Only use lint-free cloths. |
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| Only use parts from their original packaging. |
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| Only remove new parts from their packaging immediately before fitting. |
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| When carrying out varnishing work: due to safety reasons the control unit may not be set at a temperature of above 85° for more than 2 hours. |
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| Before using electric welding equipment, note the relevant safety measures and indications according to → Rep. gr.00. |
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