It is anticipated that this SAE Recommended Practice will be only one step in a comprehensive evaluation of the vehicle/transmission application. This document alone is not adequate "due care" to insure against high-speed seizure or other high-speed problems.

The notes printed in bold print throughout the practice convey important information about the test itself or the results and should be considered carefully.

All references to transmissions also apply to transaxles, except for the unbalance evaluation which applies only to rear-wheel-drive transmissions with propeller shaft output.

Purpose-The overall objective of the high-speed spin, high-speed unbalance, and lubrication practice is to evaluate manual transmissions which may be installed in vehicles sold into countries where high vehicle speeds are permitted. The document is segmented into four parts which include:

5.1 Pretest Lubrication Evaluation

5.2 Pre-high-speed spin test run-in

5.3 High-speed spin test

5.4 High-speed-output shaft unbalance