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 23 of 704
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TB 9-3950-253-13&P
OPERATOR AND FIELD MAINTENANCE
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GENERAL INFORMATION
SCOPE
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1.
Type of Technical Bulletin.
a. This TB provides instructions on how to operate the Enhanced Container Handling Unit (E-CHU).
b. Also included are Operator and Field Maintenance instructions, including removal/disassembly, adjust-
ments, troubleshooting, and periodic inspections and lubrication services to keep the E-CHU serviceable.
c.
Original Equipment Removal and Installation Instructions are included in this TB.
d. An illustrated Repair Parts and Special Tools List (RPSTL) for all components of the E-CHU is included in
this TB (WP 0054).
2.
Equipment Name.
Enhanced Container Handling Unit (E-CHU), NSN: 3950-20-003-8784
3.
Purpose of Equipment.
The E-CHU is a kit, designed to be bolted onto the PLS M1075 and M1075A1 truck or HEMTT LHS M1120,
M1120A2, and M1120A4, which allows the truck to load, transport, and unload 20 ft long ISO containers
directly onto the truck.
4. HEMMT M1120 and M1120A2 are similar for E-CHU operation and maintenance purposes.
MAINTENANCE FORMS, RECORDS, AND REPORTS
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Department of the Army forms and procedures used for equipment maintenance will be those prescribed by PAM
750-8,
The Army Maintenance Management System
(TAMMS) User’s Manual
.
REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS (EIR)
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If your E-CHU needs improvements, let us know. Send us an EIR. You, the user, are the only one who can tell us
what you do not like about your equipment. Let us know why you do not like the design or performance. (E-Mail:
TACOM-TECH-PUBS@conus.army.mil) We will send you a reply. The preferred method for submiting Quality Defi-
ciency Reports (QDRs) is through the Army Electronic Product Support (AEPS) wesite under the Electronic Defi-
ciency Reporting System (EDRS). The web address is: http://aeps.ria.army.mil. If the above method is not
available to you, put it on an SF 368 (Product Quality Deficiency Report), and mail it to us at: Department of the
Army, U.S. Army Tank-automotive and Armaments Command, AMSRD-TAR-E, PDQR MS 268, 6501 E. 11 Mile
Road, Warren, MI 48397-5000.
CORROSION PREVENTION AND CONTROL (CPC)
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1. CPC of Army materiel is a continuing concern. It is important that any corrosion problems with this item be
reported so that the problem can be corrected and improvements can be made to prevent the problem in future
items.
2. Corrosion specifically occurs with metals. It is an electrochemical process that causes the degradation of met-
als. It is commonly caused by exposure to moisture, acids, bases, or salts. An example is the rusting of iron.
Corrosion damage in metals can be seen, depending on the metal, as tarnishing, pitting, fogging, surface resi-
due, and/or cracking.
3. Plastic, composites, and rubber can also degrade. Degradation is caused by thermal (heat), oxidation (oxy-
gen), solvation (solvents), or photolytic (light, typically UV) processes. The most common exposures are
excessive heat or light. Damage from these processes will appear as cracking, softening, swelling, and/or
breaking.
4. SF Form 368
, Product Quality Deficiency Report
should be submitted to the address specified in PAM 750-8,
TAMMS User’s Manual
.
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