Description / Abstract:
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