1981 Bell UH-1B UH-1C UH-1H UH-1M EH-1H UH-1V Repair Parts & Special Tools Manual TM 55-1520-210-23P-2
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Aviation Unit and Intermediate Maintenance Repair Parts and Special Tools List for Bell UH-1B, UH-1C, UH-1H, UH-1M, EH-1H and UH-1V helicopters. This 970-page PDF volume covers Functional Groups 07 through 14, including hydraulic and pneumatic systems, instruments, electrical systems, fuel systems, flight controls, utility systems, environmental controls, hoists and winches. Detailed illustrated parts breakdowns are paired with part numbers, National Stock Numbers, SMR codes, usable-on codes and quantities where listed.
Description
1981 Bell UH-1B UH-1C UH-1H UH-1M EH-1H UH-1V Repair Parts & Special Tools Manual TM 55-1520-210-23P-2
This extensive parts reference covers the UH-1B, UH-1C, UH-1H, UH-1M, EH-1H and UH-1V utility tactical transport helicopters. TM 55-1520-210-23P-2 is the second volume of the Aviation Unit and Intermediate Maintenance Repair Parts and Special Tools List and concentrates on Section II, Functional Groups 07 through 14. Across its illustrated parts listings, the manual provides exploded assemblies and installation drawings alongside the identifying information needed to trace components within hydraulic, instrument, electrical, fuel, flight-control, utility, environmental-control, hoist and winch systems.
The 1981 Bell UH-1B UH-1C UH-1H UH-1M EH-1H UH-1V Repair Parts & Special Tools Manual TM 55-1520-210-23P-2 is particularly useful when the task is identifying an assembly, locating the corresponding item in an exploded illustration, checking a listed part number or National Stock Number, or determining the helicopter applicability shown by the manual. Parts-list columns include illustration figure and item references, SMR codes, National Stock Numbers, FSCM identifiers, part numbers, descriptions, usable-on codes, units of measure and quantities incorporated in the unit where applicable. Many assemblies are broken down into individual fittings, seals, bearings, fasteners, valves, hoses, tubes, switches, structural items and other replaceable components.
File Details
- Manual type: Aviation Unit and Intermediate Maintenance Repair Parts and Special Tools List, including Depot Maintenance Repair Parts and Special Tools
- Models: UH-1B, UH-1C, UH-1H, UH-1M, EH-1H (Bell), UH-1V
- Technical manual: TM 55-1520-210-23P-2
- Original issue date: 27 February 1981
- Update material: List of Effective Pages includes Changes 1 through 18, with Change 18 dated 13 November 2001
- Language: English
- Pages: 970
- File format: PDF
Volume 2 Parts Coverage
TM 55-1520-210-23P-2 is specifically identified as the volume containing Section II Functional Groups 07 through 14. This is important when selecting the correct UH-1 parts manual: the document is not simply a general handbook or a short illustrated catalog. It concentrates on a defined group of helicopter systems and follows assemblies down into detailed component listings. Applicability information varies with the assembly, and numerous entries identify the relevant helicopter configuration through usable-on codes or effectivity information.
The illustrated format allows a technician or parts researcher to work from a complete installation or assembly drawing to numbered components and then to the corresponding parts-list data. Examples in the hydraulic section include complete dual-system installations, reservoirs, modular hydraulic units, servo cylinders and extensive tubing and fitting arrangements. Elsewhere the same figure-to-list approach is used for instrument installations, electrical equipment, fuel-system components, flight controls, environmental-control equipment and rescue-hoist or cargo-suspension hardware.
Chapters Covered
- Functional Group 07 – Hydraulic and Pneumatic System
- Cyclic flight-control hydraulic cylinder assemblies and hydraulic servo cylinders
- Dual-system hydraulic module installations and modular hydraulic unit assemblies
- Reservoir sections and hydraulic flight-controls reservoir assemblies
- Dual-system line installations, forward inboard, center, pump and aft sections
- Irreversible flight-control valve assemblies
- Hydraulic fluid tanks and associated installations
- Armament hydraulic installations
- Functional Group 08 – Instrument Systems
- Instrument panel and pedestal installations
- Glare shield assembly
- Left-hand, center and related instrument panel assemblies
- Pitot piping installation
- Instrument piping and static-system piping installations
- Functional Group 09 – Electrical Systems
- Forward-section electrical installations and crew lighting
- Rescue-hoist, door-gunner, smoke-generator and navigation electrical installations
- Master caution, word caution, fault-function and RPM warning equipment
- Nose-compartment electrical equipment and landing-light installations
- Overhead electrical consoles, AC power and external-stores circuit breakers
- Heating, hydraulic-boost, external-fuel and engine control panels
- Force-trim, hydraulic-control and chip-detector panel assemblies
- Main and spare inverter installations, batteries and battery mounting equipment
- Radio, aft electrical and pylon electrical equipment installations
- Direct-current generators, power-plant electrical equipment and starter installations
- Glidescope/marker-beacon, 5-volt lighting and AN/APN-209(V) installations
- Auxiliary-fuel and avionics electrical-system installations and kits
- XM16, XM3, XM6E3 and XM21 related armament electrical installations
- Functional Group 10 – Fuel Systems
- Lower and upper fuel-system installations
- Fuel-system modification equipment and pressure-filter assemblies
- Tank and upper-tank section installations
- Receiver-refueling equipment
- Left-hand and right-hand tank sections and submerged aircraft pumps
- Auxiliary fuel-tank lines and external auxiliary fuel and air lines
- External fuel-tank installations and auxiliary fuel systems
- Functional Group 11 – Flight Control Systems
- Forward and aft collective-pitch control installations
- Collective-pitch jackshaft, collective control and throttle-drive assemblies
- Control sticks, grips, supports and dual removable controls
- Fore-and-aft and lateral cyclic control installations
- Magnetic brake assemblies
- Forward and aft tail-rotor control installations
- Anti-torque cylinder and support assemblies
- Tail-rotor control cables and adjuster assemblies
- Forward and aft synchronized-elevator controls and elevator installation
- Functional Group 12 – Utility Systems
- Mirror and windshield-wiper installations
- Motor and converter assemblies
- Engine bleed-air detection and valve installations
- Valve and switch assemblies
- Functional Group 13 – Environmental Control Systems
- Forward, aft, left-hand and right-hand hot-air distribution installations
- Winterization auxiliary equipment and heater installation kits
- Auxiliary heater equipment
- Mixing and air-distribution valves
- Blower units and blower assemblies
- Heater fuel-system equipment and heater assemblies
- Air-distribution sensors and heating air-bleed valves
- Functional Group 14 – Hoist and Winches
- Cargo suspension installations and suspension assemblies
- External cargo hooks and cargo release assemblies
- Internal rescue-hoist installation
- Actuator and direct-current motor assemblies
- Aircraft winch mountings and rescue-hoist assemblies
- Boomhead, winch and cable-hook assemblies
- Reaction arms and limit-switch assemblies
- Power-side covers, transistor and heat-sink assemblies
- Blower and pendant-control assemblies
Taken together, these sections provide a detailed component-level map of the systems included in this volume. The drawings show how assemblies are arranged and broken down, while the accompanying lists connect numbered illustration callouts to the corresponding stock and part-identification data. The Bell UH-1 repair parts and special tools reference is therefore well suited to parts research, inventory work, restoration projects and maintenance support where accurate identification of the listed component and its application is required.
Illustrated Parts Identification
A major strength of TM 55-1520-210-23P-2 is the quantity of pictorial material integrated with the listings. Hydraulic figures, for example, show detailed exploded servo-cylinder assemblies, modular hydraulic units, reservoirs and complete line installations. Numbered callouts can then be followed directly into the associated parts tables. Similar illustrated breakdowns continue throughout the other functional groups, allowing the reader to distinguish assemblies that could otherwise be difficult to identify from a part number alone.
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The manual also records configuration distinctions within individual listings. Certain assemblies carry specific usable-on codes, while other entries include effectivity ranges or indicate alternate part numbers and replacement relationships. Because these details occur at the assembly and component level, this UH-1 parts manual can help prevent the common mistake of assuming that every component shown applies identically to every UH-1 variant covered by the volume.
What This Manual Is Designed to Provide
This document is a Repair Parts and Special Tools List rather than a step-by-step overhaul procedure manual. Its core purpose is component identification and maintenance-parts support. It is especially valuable for matching an illustrated item to a part number or NSN, understanding an assembly breakdown, checking the quantity of a component used, reading the listed SMR information and determining the model applicability recorded for a particular item. For technicians working from another maintenance procedure, restorers tracing missing hardware, or parts personnel verifying helicopter components, that level of identification can be essential.
The 1981 Bell UH-1B UH-1C UH-1H UH-1M EH-1H UH-1V Repair Parts & Special Tools Manual TM 55-1520-210-23P-2 gives you a substantial illustrated reference for the helicopter systems contained in Functional Groups 07 through 14. It supports accurate parts identification for hydraulic, instrument, electrical, fuel, flight-control, utility, environmental-control, hoist and winch work, helping you follow the correct assembly breakdown and the applicability information printed for the component instead of relying on visual similarity alone. Correct part numbers, stock numbers, usable-on information and assembly relationships matter when servicing or restoring these aircraft. The manual is supplied as an instant PDF download after purchase, with no physical shipping required; it can be viewed on compatible computers, tablets and phones and printed when a paper reference is useful at the workbench.
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