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  • M9 ACE (Armored Combat Earthmover) Military Bulldozer


    While not being a direct-combat vehicle, the M9 ACE earthmover has seen its fair share of conflicts.

     Updated: 6/22/2017; Authored By Staff Writer; Content ¬©www.MilitaryFactory.com


    The M9 ACE ("Armored Combat Earthmover") is a frontline military-grade tracked bulldozer utilized by the United States Army. The system was developed to allow forces the ability to dig entrenchments for various artillery pieces while also fulfilling the roles of minefield breaching/clearance, trench crossing/filling, general bulldozing, grading, excavation, route-/area-proofing and pushing/towing of vehicles and/or obstacles. The M9 ACE entered service in 1986 and upgrade programs have kept the machine a viable battlefield piece for American forces. Despite it not being armed, the M9 series has seen its fair share of combat in other ways.

    As designed, the M9 weighs in a 36,000lb and features single crew member. The vehicle showcases dimensions of 6.25 meters long, a width of 3.2 meters and a height of 2.7 meters. The crew sits protected under the armored hull superstructure allowing them to continue to operate even when under threat of direct fire from the enemy. Protection is adequate against small arms and fire and artillery spray. Vision ports allow for the necessary situational awareness and project direction. The vehicles configuration is conventional with a dozer blade set to the front of the hull and the crew compartment aft. Running gear includes a track-and-wheel arrangement featuring four road wheels to a hull side with the drive sprocket at rear. The vehicle can promote its own smokescreen through the bank of eight smoke grenade launchers fitted to the hull roof. The M9 line features an amphibious quality as well as an integrated Nuclear, Biological, Chemical (NBC) suite.

    Power is served through a Cummins V903C 8-cylinder diesel-fueled engine outputting at 295 horsepower. This provides the vehicle with a top road speed of 30 miles per hour and an operational range out to 200 miles.


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    M9 ACE (Armored Combat Earthmover) Technical Specifications


    Service Year: 1986
    Type: Military Bulldozer
    National Origin: United States
    Manufacturer(s): BMY Combat Systems / United Defense LP - USA
    Production: 448



    Design (Crew Space, Dimensions, Weight, and Systems)


    Operating Crew: 1
    Length: 20.34 feet (6.20 meters)
    Width: 10.50 feet (3.20 meters)
    Height: 9.84 feet (3.00 meters)

    Operating Weight: 27 tons (24,400 kg; 53,793 lb)

    Nuclear / Biological / Chemical Protection: Yes
    Nightvision Equipment: Yes

    Installed Power and Standard Road Performance


    Engine(s): 1 x Cummins V903C 8-cylinder diesel engine generating 295 horsepower.

    Maximum Road Speed: 30 mph (48.28 km/h)
    Maximum Road Range: 199 miles (320 km)

    Armament and Ammunition


    8 x Smoke Grenade Dischargers.

    Ammunition:
    8 x Smoke Grenades.

    Global Operators / Customers


    United States

    Model Variants


    M9 ACE - Base Series Designation; model of 1986

    M9 ACE System Improvement Plan (SIP) - Multi-phased improvement program for upgraded existing M9 ACE fleet.

    M9 ACE Standardized Robotic System (SRS) - Proposed unmanned remote-controlled variant.