TB-9-3950-253-13-P
PALLETIZED LOAD SYSTEM TRUCK, M1075 and M1075A1 (PLS) AND HEAVY EXPANDED MOBILITY TACTICAL TRUCK, M1120, M1120A2, AND M1120A4 (HEMTT), ENHANCED CONTAINER HANDLING UNIT (E-CHU)
TECHNICAL BULLETIN; OPERATOR AND FIELD MAINTENANCE, INSTALLATION INSTRUCTIONS, AND REPAIR PARTS AND SPECIAL TOOLS LIST
JULY 2009
TB-9-3950-253-13-P - Page 19 of 704
TB 9-3950-253-13&P
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HOW TO USE THIS TECHNICAL BULLETIN
NOTE
If at any time you are unsure how to use this technical bulletin (TB) or you cannot locate
the information you need, notify your supervisor.
INTRODUCTION
1. This TB is designed to help you operate the Enhanced Container Handling Unit (E-CHU) and perform trouble-
shooting and maintenance on the equipment.
2. This TB is written in work package format:
a. Chapters divide the manual into major categories of information.
b. Each chapter is divided into work packages which are identified by a 4-digit number (e.g., 0001, 0002)
located in the upper right-hand corner of each page. The work package page number (e.g., 0001-1,
0001-2) is centered at the bottom of each page.
c.
TM references in the Equipment Condition section of the INITIAL SETUP blocks are general. Please refer
to the model specific TMs for additional information as required.
3. Read through this TB to become familiar with its organization and contents before attempting to operate or
maintain the equipment.
CONTENTS OF THIS TECHNICAL BULLETIN
1. A
Warning Summary
is located at the beginning of the TB. Become familiar with these warnings before per-
forming troubleshooting or maintenance on the E-CHU.
2. A
Table of Contents
, located in the front of the TB, lists all chapters and work packages in this TB.
a. The title block page provides
Reporting Errors and Recommending Improvements
information and DA
Form 2028 addresses, for the submittal of corrections to this TB.
b. If you cannot find what you are looking for in the
Table of Contents
, refer to the alphabetical
Index
at the
back of this TB.
3. Chapter 1,
General Information, Equipment Description, and Theory of Operation
, provides general informa-
tion on the TB and the equipment.
4. Chapter 2,
Operator Instructions
, explains and illustrates all operator controls and indicators. It also describes
how to perform all operating procedures for the E-CHU, including
Operation Under Usual Conditions
and
Oper-
ation Under Unusual Conditions
.
5. Chapter 3 covers
Operator Troubleshooting Procedures
. WP 0013 contains the
Troubleshooting Symptom
Index
. If the E-CHU malfunctions, this index should always be consulted to locate the appropriate troubleshoot-
ing procedure.
6. Chapter 4 covers
Operator Maintenance Instructions
.
7. Chapter 5 covers
Field Maintenance Troubleshooting Procedures
.
8. Chapter 6 covers
Field Maintenance Instructions
.
9. Chapter 7 covers
Installation Instructions
.
10. Chapter 8 contains the
Repair Parts and Special Tools List (RPSTL)
.
11. Chapter 9 provides
Supporting Information
. Covered are
References, Maintenance Allocation Chart (MAC),
Basic Issue Items (BII) List, Expendable and Durable Items List
, and various supplemental information.
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