# Group 27 Intermediate & Special Transmission Service Bulletins

#### Bulletin number

#### Title

#### Description

#### Date of issue

27 01 87 (1505) | Transfer Case Venting 325iX Manual Transmission | Exchange units have plug instead of vent. Replace plug with vent from old unit before installation | October 1987
27 02 87 (1518) | Towing and on car wheel balancing, 325iX | All wheels must be off ground when towing, and able to spin free when performing on car balancing | November 1987
27 01 91 (3207) | Transfer case leaking at weep hole, 325iXA | Change in depth of seals, inner seal 1.5mm in from outer edge of housing, outer seal 3.5mm in. | June 1991

E30 M3 Repair Manual V2.7. Copyright ©1999-2001 Koala Motorsport & Brett Anderson