"Defense Technologies of Ukraine" (Oboronni Tekhnolohii Ukrainy) provides professional repair services for various models and modifications of the Humvee HMMWV. We specialize in military, specialized, and armored wheeled vehicles that require precise diagnostics, high-quality service, and reliable restoration of key components.

HMMWV vehicles, also known as Humvees, are operated under conditions of high stress, off-road terrain, exposure to moisture and dust, extreme temperature fluctuations, and prolonged continuous operation.

That is why HMMWV repair must begin with comprehensive diagnostics. Our specialists determine the actual technical condition of the vehicle, identify worn or damaged components, and create a list of necessary tasks: from scheduled maintenance to the overhaul of individual units.

Comprehensive Humvee Repair

The service division of "Defense Technologies of Ukraine" provides a full range of services for the repair, maintenance, and restoration of Humvee HMMWV vehicles.

Key areas of work include:

• Scheduled HMMWV maintenance (PMCS)
• Comprehensive pre-repair vehicle diagnostics
• Repair of 6.2L and 6.5L diesel engines
• Repair of transmission, transfer case, and 4WD system
• Brake system maintenance
• Suspension and steering repair
• Diagnostics and repair of electrical systems
• Repair of cooling, ventilation, and HVAC systems
• Fuel system repair
• Restoration of body, armored, and mounted elements
• Preparation of the vehicle for intensive operation

HMMWV Pre-Repair Diagnostics

Quality Humvee repair starts with diagnostics. Before performing any work, we check the condition of the vehicle's main systems: engine, transmission, chassis, brakes, electrical equipment, cooling systems, body elements, and auxiliary equipment.

Diagnostics allow us to accurately determine the cause of a malfunction, assess the wear level of parts, and understand exactly what work is required: scheduled maintenance, routine repair, replacement of individual units, or full component restoration.

HMMWV 6.2L and 6.5L Engine Repair

We perform repairs and overhauls of HMMWV 6.2L and 6.5L diesel engines. The work may include engine disassembly, troubleshooting, repair of the cylinder block, cylinder heads, piston group, crankshaft, timing system, and fuel system.

After the repair, key engine performance parameters are tested: starting, idle stability, oil pressure, temperature conditions, smoke levels, vibrations, and performance under load.

Transmission and Transfer Case Repair

The HMMWV transmission is responsible for torque transfer, 4WD operation, and off-road capability. We perform diagnostics and repair of the gearbox, transfer case, propeller shafts, differentials, bearings, seals, and joints.

If necessary, we perform transmission fluid replacement, leak sealing, adjustment of transmission units, and post-repair system testing.

Humvee Brake System Maintenance

The brake system is a critical safety element of the HMMWV. We inspect brake mechanisms, pads, discs, calipers, hydraulic lines, hoses, the master cylinder, and the condition of the brake fluid.

Following diagnostics, we perform preventive maintenance, repair, or replacement of worn brake components to ensure stable braking performance and reduce the risk of failure during operation.

HMMWV Suspension and Steering Repair

Humvee suspension and steering operate under significant impact loads, off-road conditions, and heavy vehicle weight. We diagnose shock absorbers, control arms, bushings, stabilizers, tie rods, ends, power steering, and other chassis elements.

Timely repair of the suspension and steering helps maintain stable handling, reduce tire wear, and increase vehicle safety.

HMMWV Electrical System Repair

The Humvee electrical system is responsible for engine starting, lighting, instrument power, communication systems, navigation, and auxiliary equipment. We perform electrical diagnostics, wiring checks, and testing of batteries, alternators, starters, relays, fuses, and control units.

Electrical system repair eliminates issues with starting, charging, lighting, unstable power supply, or failure of individual electronic components.

Cooling and Ventilation System Repair

The HMMWV cooling system protects the engine from overheating and maintains stable performance under load. We perform diagnostics, flushing, and repair of the cooling system, including radiators, hoses, thermostats, pumps, fans, and lines.

We also provide ventilation and air conditioning maintenance where applicable.

Restoration of Body and Armored Elements

We separately inspect body elements, doors, hatches, glass, mounts, attachments, and armored structures. If necessary, we repair or restore damaged elements, reinforce mounts, and prepare the vehicle for further use.

When HMMWV Repair is Needed

You should contact our service if the vehicle shows signs of malfunction, requires scheduled maintenance, or needs restoration after intensive use.

Common reasons for service:

• Loss of engine power
• Difficult starting or unstable operation
• Engine overheating
• Unusual noises in the transmission
• Problems with 4WD engagement
• Knocking in the suspension or steering play
• Increased braking distance
• Technical fluid leaks
• Electrical, lighting, or charging malfunctions
• Damage to body or armored elements
• Need to prepare the vehicle for intensive operation

Advantages of Repairing with "Defense Technologies of Ukraine"

"Defense Technologies of Ukraine" has practical experience in maintaining military, specialized, and armored wheeled vehicles. We take into account the design features of the HMMWV Humvee, the technical condition of the specific vehicle, and its future operating conditions.

Our advantages:

• Comprehensive HMMWV Humvee repair in a single service facility
• Experience working with various HMMWV and Humvee modifications
• Professional diagnostics before any repair work
• Repair of engine, transmission, chassis, brakes, electrical, and cooling systems
• Selection of high-quality spare parts and consumables
• Capacity to service individual vehicles or entire fleets
• Work performed in accordance with manufacturer technical documentation, Ministry of Defense of Ukraine requirements, and current NATO standards for military equipment maintenance
• Step-by-step quality control
• Warranty on performed work and installed parts

Professional HMMWV Humvee Repair

Repairing the HMMWV Humvee requires experience with military equipment, a deep understanding of the vehicle's design, and professional diagnostics. "Defense Technologies of Ukraine" provides an integrated approach to restoring HMMWV and Humvee modifications—from initial diagnostics to the repair of key units, restoration of armored elements, and preparation for further operation.

All work is carried out according to manufacturer technical documentation, Ministry of Defense of Ukraine requirements, and modern approaches to military equipment maintenance that meet NATO standards.

Contact "Defense Technologies of Ukraine" if you need HMMWV repair, Humvee maintenance, or restoration of a Humvee vehicle after intensive operation, prolonged use, or special mission fulfillment.