mercedesbenz Workshop Repair Guides

Mercedes Benz Workshop Service and Repair Manuals

ABS/ASR/ESP Hydraulic Unit <--> [Hydraulic Control Assembly - Antilock Brakes]|Diagrams > < Maintenance - Factory Approved Service Products|Page 3721
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ABS/ASR/ESP Hydraulic Unit: Technical Service Bulletins
ASR System - Service Precautions

REF. NO. 42/128

TO: OUR MERCEDES-BENZ PASSENGER CAR DEALERS

DATE: December 1994

SUBJECT: 
ALL MODELS WITH ASR II OR III
REMOVAL AND INSTALLATION OF ASR HYDRAULIC UNIT (A7/3) 
AND/OR PRESSURE RESERVOIR

Please note when performing repairs involving the removal/installation of the ASR hydraulic unit (A7/3) and/or pressure reservoir that the correct
connection of the corresponding hydraulic lines to each component is critical during installation.

Improper connection of the hydraulic lines will result in components malfunction and subsequent damage as well.

Prior to beginning any such repairs, please review SMS, Job Nos. 42-0816 and 42-0819 for the respective vehicle model along with the illustration in
this Service Information.

ABS/ASR/ESP Hydraulic Unit <--> [Hydraulic Control Assembly - Antilock Brakes]|Diagrams > < Maintenance - Factory Approved Service Products|Page 3721