Description
2001 HMMWV M998 Series Repair Parts & Special Tools Manual Volume 1 – TM 9-2320-280-24P-1
This 2001 HMMWV M998 Series Repair Parts & Special Tools Manual Volume 1 – TM 9-2320-280-24P-1 is the unit, direct support, and general support maintenance Repair Parts and Special Tools List (RPSTL) for the M998-series 1-1/4 ton, 4×4 vehicle family. It is arranged around illustrated assemblies, repair-parts listings, usable-on codes, National Stock Numbers, part numbers, Source, Maintenance, and Recoverability codes, and the special tools needed to support maintenance. The manual covers a broad set of cargo/troop carrier, heavy variant, TOW carrier, armament carrier, shelter carrier, ambulance, and winch-equipped configurations identified in the publication.
File Details
- Manual type: Unit, Direct Support and General Support Maintenance Repair Parts and Special Tools List (RPSTL)
- Series: HMMWV M998 Series
- Volume: Volume 1 of 2
- Army publication: TM 9-2320-280-24P-1
- Air Force publication: TO 36A12-1A-3044-1
- Marine Corps publication: TM 2320-24P/8B
- Date: 30 March 2001
- Change: Change 1
- Language: English
- PDF pages: 1144
- File format: PDF
Vehicle Coverage
The M998-series parts manual identifies vehicle applicability through usable-on codes, allowing the reader to separate common components from parts used only on particular configurations. Covered designations include M998, M998A1, M1038, M1038A1, M1097, M1097A1, M1097A2, M1123, M966, M966A1, M1121, M1045, M1045A1, M1045A2, M1046, M1046A1, M1025, M1025A1, M1025A2, M1026, M1026A1, M1043, M1043A1, M1043A2, M1044, M1044A1, M1037, M1042, M996, M996A1, M997, M997A1, M997A2, M1035, M1035A1, and M1035A2. The publication also identifies certain kit-related applications for M1097 vehicles, including L119 prime mover, S250 shelter, and towed Vulcan system configurations.
How the Parts Information Is Organized
Each illustrated parts entry is built to help identify a component and connect it with the information needed for supply and maintenance support. Listings use item numbers tied to the figure, five-position SMR codes, National Stock Numbers where assigned, CAGE codes, part numbers, descriptions, usable-on codes, and quantity incorporated in the illustrated unit. The introduction explains how the SMR code indicates how an item is obtained, the lowest maintenance level authorized to remove, replace, use, or completely repair it, and the disposition action for an unserviceable item.
The manual also explains how to locate a part when the NSN or part number is not known: determine the assembly or subassembly group, find the applicable figure, identify the item in the illustration, and then use the figure/item information to locate its listing. When an NSN or part number is already known, the cross-reference indexes lead back to the applicable figure and item number. This makes TM 9-2320-280-24P-1 particularly useful when a technician has either the physical component, an illustration location, a stock number, or a manufacturer part number as the starting point.
Engine and Variant Identification
The 2001 HMMWV M998 Series Repair Parts & Special Tools Manual Volume 1 distinguishes parts for 6.2 LITER and 6.5 LITER diesel engine applications. It notes that 1990 and later engines include new or revised parts that may not interchange with earlier engines, and it provides identification guidance for the 1990 engine and the 6.5L engine. Parts listings also show year-specific 6.5 LITER replacement engine entries through 2001, including 6.5 LITER engines detuned for use as 6.2 LITER replacements in applicable configurations. Serial applicability appears in selected groups, including references to 1 THRU 99,999, 100,000 AND ABOVE, Serial Number 196900 and Below, and Serial Number 196901 and Above.
Chapters Covered
- Section I – Introduction: scope, organization of the RPSTL, explanation of listing columns, usable-on codes, associated publications, repair-parts location methods, and engine identification.
- Group 01 – Engine: engine and container assembly, engine mounting brackets, lubrication components, oil pan and pump, oil cooler lines, oil filter and adapter, crankcase depression regulator, and intake/exhaust manifolds.
- Group 03 – Fuel System: fuel pump, fuel injection pump and lines, air cleaner, fuel tanks and supply/return lines, filler and vent lines, fuel filter/water separator, glow plug, accelerator controls, and hand throttle components.
- Group 04 – Exhaust System: mufflers, exhaust pipes, related mounting parts, and exhaust manifold heat shield.
- Group 05 – Cooling System: radiator, surge tank, shroud, hoses, thermostat and water crossover, water pump, fan assemblies, belts, tensioners, idler pulleys, and fan drive components.
- Group 06 – Electrical System: 60 AMP, 100 AMP, 200 AMP and related alternator/generator installations; starter motor; instrument panel and cluster; circuit breakers; control boxes; switches; lighting; sending units; batteries; slave receptacles; power cables; and wiring harnesses.
- Group 07 – Transmission: shift controls, torque converter, transmission mounting and dipstick parts, transmission assemblies, planetary carriers, parking lock, clutch assemblies, servos, governor, control valves, oil pump, vent lines, and transmission/transfer cooling lines.
- Group 08 – Transfer Assembly: transfer case and transfer assemblies, front and rear case halves, transfer oil cooler, shift mechanisms and controls, and vent lines.
- Group 09 – Propeller Shafts: front and rear propeller shaft assemblies.
- Group 10 – Front Axle: halfshafts, differential and mounting hardware, vent lines, knuckle/geared hub assemblies, control arms, ball joints, and related mounting hardware.
- Group 11 – Rear Axle: rear halfshafts, differential assemblies and brackets, vent lines, knuckle/geared hub assemblies, control arms, and ball joints.
- Group 12 – Brakes: parking brake controls and caliper/rotor parts, service brake caliper and rotor, front and rear brake lines, proportioning valve, master cylinder, hydro booster, and brake pedal assemblies.
- Group 13 – Wheels: wheel and runflat assembly and tires.
- Group 14 – Steering: steering column, wheel and intermediate shaft, steering linkage, steering gear, power steering pump and brackets, reservoir, oil cooler, and hydro-booster/fan-clutch hydraulic lines.
- Group 15 – Frame and Towing Attachments: frame assemblies, body mount brackets, crossmembers, suspension mounting structures, bumpers, lifting shackles, protection guards, and towing pintle.
- Group 16 – Springs and Shock Absorbers: front and rear springs, shock absorbers, stabilizer bar, connecting links, and rear radius rods.
- Group 18 – Body and Hood: body mounting and body assemblies, insulation, hood and grille components, doors, cargo bulkhead, ambulance body components, windshield assemblies, seats and belts, stowage equipment, tailgate, armor panels, cargo shell, weapon-station structures, litter equipment, rear steps, heater/A/C ducts, and NBC-related ambulance components.
- Group 20 – Hoist, Winch, Capstan, Windlass, Power Control Unit and PTO: winch assembly, mounting hardware, controls, storage box, and related components.
- Group 22 – Body, Chassis and Accessory Items: soft-top enclosures, bows and curtains, windshield wiper and washer parts, mirrors, heater and defroster ducting, ambulance heater components, antenna/intercom installations, and vehicle data plates.
- Group 33 – Special Purpose Kits: engine shipping container, arctic and winterization kits, deep-water fording kit, troop-seat and communications kits, mortar and traversing kits, shelter-related kits, prime mover and towing kits, winch kits, alternator kits, tachometer kits, PLGR mounting, brake-line kits, and additional vehicle modification/support kits.
- Group 47 – Gauges, Weighing and Measuring Devices: speedometer, speedometer drive, and air restriction indicator.
- Group 52 – Refrigeration, Air Conditioner and Heater Components: ambulance air-conditioner compressor, lines and fittings, condenser, evaporator, and blower-motor assemblies.
- Group 94 – Kits: repair parts kits.
- Group 95 – Bulk Material: bulk materials referenced by repair-parts entries.
- Section III – Special Tools List: tools and test equipment for drive belts, transmission, transfer case, axle differential, geared hub and steering, steering pump, body, speedometer drive, air-conditioner compressor, A2 engine/transmission/transfer applications, multipurpose work, and pinion setting.
- Section IV – Cross-Reference Indexes: National Stock Number Index and Part Number Index, cross-referenced to figures and item numbers.
Complete PDF Bookmark Tree
Complete Bookmarks
The complete bookmarks in the “2001 HMMWV M998 Series Repair Parts & Special Tools Manual Volume 1 – TM 9-2320-280-24P-1” are as follows:
TABLE OF CONTENTSp. 12
LAST CHANGEp. 3
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Across these groups, the document works as a detailed illustrated identification and supply reference rather than a step-by-step repair-procedure manual. The parts figures show assemblies and component relationships while the accompanying lists identify the corresponding item numbers, stock numbers, CAGE codes, part numbers, descriptions, quantities, and model-specific usable-on codes. That distinction matters when selecting replacement parts for a particular M998-series configuration, especially where the manual separates early/current arrangements, engine versions, A1/A2 applications, ambulance equipment, armored or supplemental-armor variants, winch equipment, and special-purpose kits.
Parts, Special Tools and Cross-Reference Support
Section III extends the manual beyond ordinary replacement parts by listing special tools, special TMDE, and other support equipment authorized for maintenance, with Basis of Issue information where applicable. Tool coverage includes transmission, transfer case, differential, geared hub and steering work, air-conditioning compressor tools, multipurpose tooling, A2-related powertrain tools, and a pinion setting kit. Section IV then provides two major lookup routes: the National Stock Number index arranged by NIIN and the Part Number index arranged alphanumerically, with references back to illustration figures and item numbers.
The usable-on-code system is especially important for this family because many assemblies are shared while others are tied to a specific vehicle, ambulance arrangement, winch configuration, A1/A2 variant, or support kit. The manual identifies applications such as M1097A2, M997A2, M1025A2, M1035A2, M1043A2, M1045A2, and M1123 alongside earlier basic and A1 variants. For technicians and parts personnel, this provides a structured way to check an illustrated component against the exact model code before relying on a stock number or part number.
Get the Correct HMMWV Parts Reference Instantly
The 2001 HMMWV M998 Series Repair Parts & Special Tools Manual Volume 1 – TM 9-2320-280-24P-1 gives you a single detailed reference for identifying repair parts, checking variant applicability, tracing NSNs and manufacturer part numbers, reading SMR information, matching components to illustrated figures, and locating the special tools associated with supported maintenance. Using the correct figure, item number, usable-on code, and part identification data can reduce wrong-part selection and makes planning maintenance on M998-series vehicles far more precise. After purchase, the manual is delivered instantly as a PDF with no shipping required. You can open it on a phone, tablet, laptop, or desktop and print the pages you need for workshop or parts-reference use.
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