Technical Manual Change 3 (TM 5-2410-209-20P) for Model HD16M Tractor
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Technical Manual C3 (TM 5-2410-209-20P) Model HD16M Tractor
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This Technical Manual Change 3 for TM 5-2410-209-20P covers the Allis-Chalmers Model HD16M Tractor, identified under FSN 2410-078-6483, and is dated September 1969. This change was issued for the original TM 5-2410-209-20P manual dated March 28, 1967, making it an important companion document for collectors, researchers, restorers, and anyone building a serious reference library around U.S. Army engineer equipment and Cold War technical literature.
Unlike a full base manual, this item is an official Change 3 publication. That means it was issued to revise and update the original manual rather than replace it outright. For collectors, that matters. Army manuals were routinely kept current through numbered changes, and surviving change issues help document how maintenance guidance, repair-parts information, and service procedures evolved while the equipment remained in use. In that sense, this is not just a supplemental insert. It is part of the actual service history of the manual.
The Allis-Chalmers Model HD16M Tractor
The Allis-Chalmers Model HD16M Tractor belongs to the broader family of military engineer, construction, and heavy support equipment. As identified by its nomenclature, it is a heavy tractor / crawler-type engineer machine, placing it squarely in the support side of Army operations rather than in the category of conventional weapons or combat vehicles.
Equipment in this class was associated with heavy earthmoving, site preparation, grading, clearing, towing, and other demanding engineer tasks where traction, durability, and pushing power were more important than road speed. In military service, machinery like this fit naturally into the world of combat engineers, construction units, route development, airfield work, and large-scale logistical support.
For collectors, that makes this manual change especially interesting because it documents the technical side of Cold War military heavy equipment rather than more commonly seen combat hardware. It is also a strong crossover piece for anyone interested in Allis-Chalmers industrial history as well as U.S. Army engineer equipment.
The inclusion of FSN 2410-078-6483 adds cataloging value for collectors who prefer manuals with a specific government stock-number reference rather than only general nomenclature.
What This Manual Change Covers
Because this publication is a change to TM 5-2410-209-20P, it belongs to the organizational maintenance repair parts and special tools side of Army documentation. In practical terms, a manual change like this is especially relevant for updated service information related to:
- equipment identification and nomenclature
- organizational maintenance reference
- repair-parts and support documentation
- special tools information
- corrections or revisions to the original manual
- archival and restoration research
Since this is Change 3 for the March 28, 1967 issue, it is especially useful to collectors who want to pair it with the original base manual and preserve the manual as it was actually updated and used in service.
Historical Significance
The date September 1969 places this publication in the Cold War period, when the U.S. military maintained extensive technical literature covering not only weapons and vehicles, but also the engineer and construction equipment required to build, clear, grade, and support military operations. Manuals and change sheets like this reflect a period when Army documentation extended into every part of the logistical chain, including heavy tractors, earthmoving equipment, and field-support systems.
For collectors and historians, this manual change is especially relevant to subjects such as:
- Cold War U.S. Army technical manuals
- military construction and engineer equipment
- heavy tractor and earthmoving machinery
- Allis-Chalmers military support equipment
- dated military paperwork and manual changes
Because it covers a specialized heavy tractor rather than a more common tactical vehicle or weapon system, it also adds variety to collections that already include standard ordnance or maintenance manuals.
About This Item
This listing is for Technical Manual Change 3 for TM 5-2410-209-20P covering the Allis-Chalmers Model HD16M Tractor, identified under FSN 2410-078-6483 and dated September 1969. It was issued for the March 28, 1967 printing of the original technical manual.
It is especially well suited for:
- U.S. Army technical manual collections
- Cold War engineer and heavy-equipment displays
- Allis-Chalmers and construction-equipment collections
- museum exhibits on military construction and support systems
- archive and research libraries focused on U.S. military technical publications
Because manuals were working documents, surviving examples are valued not only for their content, but also for their connection to real military maintenance and support practice.
Why This Manual Matters
Many military manuals focus only on base editions, but change sheets are a major part of how Army documentation was actually maintained in service. This item adds a layer of authenticity and completeness that a base manual alone does not always provide.
For collectors, it is a useful companion piece to the original TM 5-2410-209-20P. For researchers, it helps document the continued maintenance and parts-support history of the Allis-Chalmers Model HD16M Tractor. For museums, it adds context to the administrative and technical side of military engineer equipment that is often overlooked in favor of more visible hardware.
Ideal For
This manual is a strong fit for:
- U.S. Army technical manual collections
- Cold War engineer and support-equipment displays
- Allis-Chalmers and construction-equipment collections
- museum and archival reference libraries
- collectors of military paperwork and dated technical publications
Approx length 10", Approx width 8", Approx height .1", Approx weight .2lbs.
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