Page 5 - Hydra-matic 6 Speed RWD Technician's Guide (October 2005)

INTRODUCTION

The Hydra-matic 6 Speed RWD Technician’s Guide fluid as it applies components or shifts valves in the
is another Powertrain publication from the system. Facing this partial page is a hydraulic
Technician’s Guide series of books. The purpose of schematic that shows the position of valves, ball check
this publication, as is the case with other Technician’s valves, etc., as they function in a specific gear range.
Guides, is to provide complete information on the
theoretical operating characteristics of this The third major section of this book displays the
transmission. Operational theories of the mechanical, “Complete Hydraulic Circuit” for specific gear
hydraulic and electrical components are presented in ranges. Fold-out pages containing fluid flow
a sequential and functional order to better explain schematics and two dimensional illustrations of major
their operation as part of the system. components graphically display hydraulic circuits.
This information is extremely useful when tracing
In the first section of this book entitled “Principles fluid circuits for learning or diagnosis purposes.
of Operation”, detailed explanations of the major
components and their functions are presented. In The “Appendix” section of this book provides
every situation possible, text describes component additional transmission information regarding
operation during the apply and release cycle as well lubrication circuits, seal locations, illustrated parts
as situations where it has no effect at all. The lists and more. Although this information is available
descriptive text is then supported by numerous in current model year Service Manuals, its inclusion
graphic illustrations to further emphasize the provides for a quick reference guide that is useful to
operational theories presented. the technician.

The second major section entitled “Power Flow”, Production of the Hydra-matic 6 Speed RWD
blends the information presented in the “Principles of Technician’s Guide was made possible through the
Operation” section into the complete transmission combined efforts of many staff areas within the
assembly. The transfer of torque from the engine General Motors Powertrain Division. As a result,
through the transmission is graphically displayed on the Hydra-matic 6 Speed RWD Technician’s Guide
a full page while a narrative description is provided was written to provide the user with the most current,
on a facing half page. The opposite side of the half concise and usable information available regarding
page contains the narrative description of the hydraulic this product.

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