Fmtv Technical Manual [verified] May 2026

The Family of Medium Tactical Vehicles (FMTV) Technical Manual (TM) acts as an essential, highly detailed guide prioritizing operator safety and precise maintenance procedures. While its structured content effectively supports trained personnel with comprehensive technical data, the manual's dense, specialized language requires significant technical familiarity. Read the full technical manual at NSN Lookup tm-9-2320-366-10-1.pdf - NSN Lookup 15-Sept-1998 —

TECHNICAL MANUAL OPERATOR'S INSTRUCTIONS M1083 SERIES, 5 TON, 6x6, MEDIUM TACTICAL VEHICLES (MTV) VOLUME NO. 1 OF 2.

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The Writing Process for Technical Instructions - Lesson - Study.com 03-Nov-2015 —

This piece focuses on the Light Medium Tactical Vehicle (LMTV) Cargo Truck (M1078), covering a standard Preventative Maintenance Checks and Services (PMCS) procedure and a mechanical adjustment.

HEADQUARTERS DEPARTMENT OF THE ARMY WASHINGTON, D.C.

TECHNICAL MANUAL NO. 9-2320-365-10

OPERATOR’S MANUAL FOR TRUCK, CARGO, LIGHT MEDIUM TACTUAL VEHICLE (LMTV) M1078 SERIES

SECTION IV. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)

2-7. INTRODUCTION

Preventive maintenance is the systematic care, inspection, and servicing of equipment to maintain it in serviceable condition and prevent failures. The PMCS tables in this manual list the inspections and services required to maintain the FMTV in top operating condition. Perform PMCS at the intervals specified in Table 2-1. Fmtv Technical Manual

WARNING Failure to perform PMCS properly could result in injury or death to personnel, or damage to equipment. Pay strict attention to WARNING and CAUTION statements.

TABLE 2-1. OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)

| ITEM NO. | INTERVAL | LOCATION | PROCEDURE | NOT READY/ AVAILABLE IF: | | :--- | :--- | :--- | :--- | :--- | | 01 | Before | ENGINE COMPARTMENT | Engine Oil Level Check a. Open cab access cover.
b. Clean area around dipstick (1) to prevent debris from entering engine.
c. Remove dipstick and wipe clean.
d. Insert dipstick fully, then remove to check oil level.
e. Oil level must be within the cross-hatched "SAFE" operating range on dipstick.
f. If oil level is low, add oil as specified in Appendix C. | Oil level is below the "SAFE" area on dipstick. | | 02 | Before | UNDER VEHICLE | Transmission Fluid Check a. Ensure vehicle is on level ground.
b. Locate transmission dipstick (on right side of engine).
c. Check fluid level in the same manner as engine oil. Fluid should be in the "COLD" range if engine is cold, or "HOT" range if engine is at operating temperature. | Fluid level is below the "COLD" range mark. | | 03 | During | IN CAB | Instrument Panel Cluster (IPC) a. Monitor IPC for warning lights and gauges.
b. Check that engine coolant temperature gauge reads between 180°F and 210°F during normal operation.
c. Verify that "LOW AIR PRESSURE" warning light is OFF and air pressure gauges read above 60 psi (414 kPa). | Gauges read outside normal operating parameters. Warning lights remain illuminated. |

CHAPTER 3 OPERATION UNDER UNUSUAL CONDITIONS

3-9. TIRE PRESSURE ADJUSTMENT (CENTRAL TIRE INFLATION SYSTEM - CTIS)

The FMTV is equipped with a Central Tire Inflation System (CTIS) that allows the operator to adjust tire pressure to match terrain conditions without leaving the cab. Correct tire pressure is critical for mobility and tire life.

CAUTION Do not use the EMERGENCY setting on hard surface roads. Tire damage and vehicle instability may occur.

PROCEDURE FOR CHANGING TIRE PRESSURE:

  1. Ensure vehicle speed is below the maximum limit for the desired setting. (See Table 3-2).
  2. Locate the CTIS Control Panel on the dashboard to the right of the steering wheel.
  3. Press and release the desired mode button:
    • HIGHWAY: For paved roads and hard surfaces.
    • CROSS-COUNTRY: For unpaved roads, gravel, and moderate terrain.
    • SAND/MUD/SNOW: For soft terrain requiring maximum traction.
    • EMERGENCY: For extreme soft terrain or run-flat capability.

Here’s a write-up for an FMTV Technical Manual (Family of Medium Tactical Vehicles), formatted as if for a military logistics or maintenance training context.

The Essential Guide to FMTV Technical Manuals: Keeping the Army’s Workhorses Running

If you work in Army logistics, manage a maintenance shop, or have recently purchased a surplus Family of Medium Tactical Vehicles (FMTV) truck, you know one truth immediately: these are not simple pickup trucks. They are highly engineered, modular diesel beasts designed to take a beating in some of the harshest environments on Earth. The Family of Medium Tactical Vehicles (FMTV) Technical

But owning or maintaining an FMTV is only half the battle. The other half is information. Without the correct FMTV Technical Manual (TM), even a skilled mechanic is working in the dark.

In this post, we break down the essential TMs you need, how to read their numbering system, and why these documents are the most valuable tool in your toolbox.

4. DS/GS Level (-34) Features

  • Engine Overhaul
    • Cylinder head torque sequence, liner protrusion
    • Fuel injection pump timing (HEUI system)
  • Transmission Rebuild
    • Clutch pack clearances, torque converter
    • Valve body repair
  • Transfer Case (M1083 variants)
    • High/low range shift mechanism
    • Output shaft bearing preload
  • Suspension & Frame
    • Leaf spring replacement, axle alignment
    • Frame straightening limits
  • Hydraulic Systems
    • Cab tilt pump overhaul
    • Winch (optional, 10k/20k lb) hydraulic motor repair

2. The Winch Operational Safety (TM 9-2320-365-10, Section 2-23)

Almost every civilian FMTV owner has bent a fairlead or snapped a cable. The -10 manual includes the critical warning about using the “Free-Spool” lever properly. Failure results in a $2,000 repair.

Part 1: Decoding the FMTV Technical Manual Nomenclature

Before you can fix the truck, you need to find the right book. The FMTV technical manuals follow the U.S. Army’s standard TM numbering system. If you search for "Fmtv Technical Manual," you will encounter dozens of numbers. Here is how to decode them.

Navigating the Numbering System

At first glance, a manual number looks like a code. Here is how to crack it:

  • TM 9: Indicates the series (Technical Manual, Automotive/Equipment).
  • 2320: The Federal Supply Class for Trucks and Truck Tractors.
  • 365 (Example): The specific model identifier.
  • 10 / 13 / 24P: The Maintenance Level (Operator, Unit, Parts).

Pro Tip: Always verify the manual matches your truck’s generation. An A0 manual will have discrepancies when used on an A1 truck, particularly regarding the engine electronics and CTIS systems.

2. Public Domain & Surplus Sites

Because FMTV manuals are government publications, they are free of copyright. Several reputable sites host clean, searchable PDFs:

  • SteelSoldiers.com (The premier military vehicle forum—find sticky threads with direct links to TM 9-2320-365 series).
  • Liberty4x4.com (Specializes in FMTV and LMTV resources).
  • OSHKOSH Equipment Support (For current A2 owners, Oshkosh offers public-facing operator handbooks).

Useful technical specs (typical ranges)

  • GVWR: ~16,000–26,000 lb depending on variant
  • Engine power: 210–350+ hp (varies by engine model/year)
  • Payload: ~2,500–10,000+ lb depending on configuration
  • Fuel capacity: ~50–90 gallons
  • Max fording depth: ~48 inches (with preparation on some variants)

Final Thoughts

An FMTV is designed to be reliable, but only if it is maintained to standard. The Technical Manual is not just a suggestion; it is the standard. Whether you are a motor sergeant preparing for a layout or a civilian restoring an LMTV, investing the time to acquire and read the correct TM will save you thousands in parts and countless hours of frustration.

Related Reading:

  • Understanding the CAT 3116 Engine: Common Issues and Fixes
  • CTIS Troubleshooting: Why Your Light is Blinking
  • A0 vs A1: Which FMTV Variant Should You Buy?

The Family of Medium Tactical Vehicles (FMTV) Technical Manuals, including TM 9-2320-366-10 and TM 9-2320-366-24P, serve as the primary guides for operating and maintaining the U.S. Army's medium-payload trucks. These documents cover essential procedures, including operator instructions, preventive maintenance checks (PMCS), and troubleshooting for LMTV and MTV variants. Official manuals for the FMTV A2 series and earlier models are accessible through resources like NSN Lookup Oshkosh Defense HEADQUARTERS DEPARTMENT OF THE ARMY WASHINGTON, D

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TECHNICAL MANUAL OPERATOR'S INSTRUCTIONS M1083 SERIES, 5 TON, 6x6, MEDIUM TACTICAL VEHICLES (MTV) VOLUME NO. 1 OF 2.

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The FMTV Technical Manual (TM) is the authoritative guide for operating, maintaining, and repairing the U.S. Army's Family of Medium Tactical Vehicles. As these 2.5-ton and 5-ton trucks form the backbone of modern military logistics, their technical manuals are exhaustive documents—often spanning thousands of pages across multiple volumes. Core Purpose of the FMTV Technical Manual

The primary goal of an FMTV TM is to ensure operational readiness and crew safety. It provides a standardized framework for:

Preventive Maintenance Checks and Services (PMCS): Systematic inspections performed by operators to identify faults before they cause mission failure.

Safe Operation: Guidance on driving the vehicle across diverse terrains, including primary roads, cross-country, and extreme environmental conditions like mud, snow, or extreme heat.

Maintenance Levels: Clearly defined tasks for different echelons, from basic operator-level repairs to complex field-level maintenance performed by specialized mechanics. Key Sections and Content

FMTV manuals are structured to be navigated quickly in the field or the motor pool. A typical manual, such as the TM 9-2320-366 series for the 5-ton M1083, includes: FMTV Load Handling System Manual | PDF - Scribd