This manual is designed to help operate and maintain the Palletized Load System Trailer (PLST). Listed below are some features included in this manual to help locate and use the required information: Chapter 1 of this manual includes PLS Trailer general information, theory of operation, differences between models, etc. Chapter 2 of this manual provides operating procedures for both the PLS Trailer, and its accompanying operating systems. Chapter 3 of this manual provides operator troubleshooting procedures for both the PLS Trailer, and its accompanying operating systems. Chapter 4 of this manual provides operator Preventive Maintenance Checks and Services (PMCS) for the PLS Trailer. In addition to text, there are illustrations showing: 1. Components, controls, and indicators. 2. How to take a component off, and put it back on. 3. Cleaning and inspection criteria are also listed when necessary."