A/T - Product Changes Mid -Year: Overview

NO.: 92-T-15

DATE: April, 1992

GROUP: Auto. Transaxle

CORP. NO.: 287103R

SUBJECT:
Information on Automatic Transaxle (MP6/MP7) Mid-Year Product Changes

MODELS AFFECTED:
SL1, SL2 Sedans and SC Coupes with automatic transaxles with VIN NZ200001 through NZ200100, and all vehicles built from, and including NZ205625.

PURPOSE:
The purpose of this bulletin is to provide technical information on the changes to both the MP6 and MP7 automatic transaxles. These changes will occur, April, 1992, and affect all vehicles with VIN ranges given above under "Models Affected." All references to 2nd design, denote changes to be made to transaxle after April, 1992. References to 1st design, denote transaxle prior to changes being made in April, 1992.

IMPORTANT:
The parts listed in this bulletin are not interchangeable between 1st and 2nd design.

REASON FOR CHANGE





The main reason for changing the automatic transaxle is to prohibit the dog clutch from being activated when the vehicle is moving forward. This is accomplished by controlling oil flow to the forward/reverse servo piston which operates the dog clutch, selecting either 2nd or reverse gear. The oil is controlled to the piston by the addition of a servo apply valve which is described and illustrated in Figure 6.