P/S - Additional Filter Used In the Hydraulic Reservoir: Overview
90bmw06GROUP 32 Steering
Bulletin Number 32 04 88 (1753) Page 1 of 6
Woodcliff Lake, NJ January 1990 Service Engineering
This Service Information Bulletin supersedes S.I. 32 04 88 (1753) dated January 1989. It includes Service Action label instructions.
Please remove and discard S.I. 32 04 88 (1753) dated January 1989 from your S.I. binder.
SUBJECT: Filter for H-31 Hydraulic-Assist System
MODELS: 7 Series (E-32) equipped with H-31 hydraulic-assist system 6 Series (1987 and 1988 Model Years)
Situation: Beginning with September 1988 production, an additional filter is being used in the hydraulic reservoir of 6 and 7 Series vehicles equipped with the H-31 system.
Procedure: Whenever an affected vehicle is in the workshop for maintenance or repairs, it should be checked to see if the additional filter installation is required. If the vehicle is not already equipped with the filter, the installation should be performed as per the following instructions, and the retaining nut should be marked with a yellow paint dot to indicate that the repair has been performed.