Technical Manual (TM 3-4240-276-30P) M2A2 Air Purifier M1A1-19 Filter
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Technical Manual (TM 3-4240-276-30&P) M2A2 Air Purifier
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This Technical Manual TM 3-4240-276-30&P covers the M2A1 Air Purifier, M2A2 Air Purifier and M1A1-19 Particulate Filter Assembly and is dated November 1976. It is associated with NSN 4240-00-307-7805, NSN 4240-00-868-7906 and NSN 4240-01-026-3112, making it a strong Cold War-era reference for collectors of U.S. Army technical manuals, Chemical Corps material, military protective equipment, and field-support systems.
Because this is a -30&P technical manual, it belongs to the maintenance and parts-support side of Army documentation rather than simple operator-level use. Manuals in this category were intended to support maintenance, repair, and associated parts reference for the equipment covered. That gives this publication strong technical value for collectors, researchers, and restorers who want a more useful service-era document rather than just a general identification manual.
The M2A1 Air Purifier, M2A2 Air Purifier and M1A1-19 Particulate Filter Assembly
The M2A1 Air Purifier, M2A2 Air Purifier and M1A1-19 Particulate Filter Assembly belong to the broader family of U.S. military air-filtration and protective-support equipment. Systems in this category were intended to help provide cleaner, filtered air in environments where airborne contaminants, particulates, or hazardous conditions were a concern.
That places this manual in the support side of Army readiness rather than in the category of conventional weapons or vehicle equipment. For collectors, that is part of the appeal. Manuals like this preserve the technical history of the systems that helped keep personnel and equipment functioning in contaminated or dusty operating environments, especially during the Cold War era when filtration and protective systems were a serious part of military planning.
The pairing of the M2A2 Air Purifier with the M1A1-19 Particulate Filter also makes this manual especially useful because it documents both the main purification unit and the associated filter element within the same technical reference.
What This Manual Covers
As a -30&P technical manual, TM 3-4240-276-30&P would have been intended to support maintenance and parts-reference functions for the M2A1 Air Purifier, M2A2 Air Purifier and M1A1-19 Particulate Filter Assembly.
In practical terms, a manual like this is especially relevant for:
- nomenclature and identification
- maintenance and servicing reference
- repair-parts support
- parts and component breakdowns
- technical reference for archival and restoration work
- maintenance-related documentation for the air purifier and filter system
That makes it useful not only as a collectible, but also as a practical reference for anyone studying how the Army documented and supported protective air-filtration equipment in the mid-1970s.
Historical Significance
The date November 1976 places this publication in the later Cold War period, when the U.S. military maintained extensive technical literature covering protective equipment, filtration systems, decontamination support, and collective-protection hardware. Manuals like this reflect a period when Army documentation extended far beyond weapons and vehicles to include the support systems required to help personnel remain operational in hazardous conditions.
For collectors and historians, this manual is especially relevant to subjects such as:
- Cold War U.S. Army technical manuals
- Chemical Corps and protective equipment
- air purification and particulate filtration systems
- military field-support and environmental-control equipment
- dated military technical publications
Because it covers a specialized air-purification and filter system rather than a more common vehicle or weapon system, it also adds variety to collections that already include standard ordnance or maintenance manuals.
About This Manual
This listing is for Technical Manual TM 3-4240-276-30&P for the M2A1 Air Purifier, M2A2 Air Purifier and M1A1-19 Particulate Filter Assembly, dated November 1976, associated with NSN 4240-00-307-7805, NSN 4240-00-868-7906 and NSN 4240-01-026-3112.
It is especially well suited for:
- U.S. Army technical manual collections
- Chemical Corps and protective-equipment displays
- Cold War military paper collections
- museum exhibits on military field-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 on weapons, vehicles, or combat systems. This one documents the support side of military readiness, specifically equipment tied to air purification and particulate filtration. That makes it especially useful for collectors who want to preserve the broader technical and logistical picture of Army Cold War preparedness rather than only front-line hardware.
For collectors, it is a solid stand-alone Cold War technical manual with a specialized subject focus. For researchers, it offers a useful reference point for Army filtration and protective-support equipment. For museums, it helps explain the behind-the-scenes systems that supported operations in contaminated or hazardous environments.
Ideal For
This manual is a strong fit for:
- U.S. Army technical manual collections
- Cold War Chemical Corps displays
- filtration and protective-equipment collections
- museum and archival reference libraries
- collectors of military paperwork and dated technical publications
Approx length 11", Approx width 8", Approx height .25", Approx weight .2lbs.
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