GENERAL SUPPORT MAINTENANCE INSTRUCTIONS
EXTENDED SERVICE PROGRAM (ESP)
TRUCK, CARGO, 2-1/2-TON, 6X6, M44A3 SERIES TRUCKS (DIESEL)
TRANSMISSION MAINTENANCE INTRODUCTION
The ESP series vehicles are equipped with an AT1545P automatic transmission which is hydraulically-
actuated and oil-cooled. The transmission has four forward and one reverse driving ranges, and
automatically upshifts or downshifts within each forward driving range. Built-in inhibitors prevent
downshifting or shifting into reverse, unless vehicle speed is within an acceptable range.
This section covers the disassembly of the transmission into its subcomponents and the repair of
subcomponents. For a specific area of repair, refer to WP 0365 00, Transmission Maintenance Table of
Refer to WP 0383 00 for general cleaning and inspection
Ensure location marks are not removed when cleaning.
All transmission parts must be lubricated with clean transmission
oil before assembly.
Ensure work area is clean and free from blowing dirt or dust.
END OF WORK PACKAGE