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Medium Tactical Vehicle Replacement (MTVR) 7 ton 6x6

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US Navy & USMC Medium Tactical Vehicle Replacement (MTVR) 7 ton 6x6

Beginning in 2001, the U.S. Navy and Marine Corps Medium Tactical Vehicle Replacement (MTVR) program superseded the M-939 and M-809 5-ton trucks with a fleet of state-of-the art, commercially based, medium trucks with greater mobility, lift, and reliability. The MTVR has an increased payload of 7.1 tons cross-country and 15 tons on hard surface roads and can simultaneously tow an 11 ton load. The MTVR has a 70 percent off road and 30 percent on road mission profile and is capable of sustained speeds of 30 mph cross-country.

The USMC Medium Tactical Vehicle Replacement (MTVR) Cargo Trailer (MK105) and Water Trailer (MK149) are matched to the MTVR truck.

Commercial components include:

  • 425 horse power electronically controlled engine
  • seven speed, continuous power, automatic transmission
  • 6-wheel independent suspension
  • anti-lock brakes
  • engine retarder (“jake brake”)
  • automatic traction control
  • central tire inflation system

MTVR Series of Vehicles

The self-recovery winch is rated at 20,000 lbs. for all MTVR models.

Find additional photos and hi-res versions of the Medium Tactical Vehicle Replacement (MTVR) at the Olive-Drab Military Mashup:

USMC Medium Tactical Vehicle Replacement (MTVR), 3rd Battalion, 8th Marines (3/8), India Company, 3rd Squad, Camp LeJeune, NC during Operation CRIMSON TIDE, Al Anbar Province, Iraq. MK 19 Mod 3 40 mm grenade machine gun system on the cab turret. 20 Apr 2005.
PFC Antonio Rosales, motor transporter with I Marine Expeditionary Force Headquarters Group, checks the engine compartment of his Medium Tactical Vehicle Replacement (MTVR) 7 ton 6x6 after conducting a three-day motor transport field operation, 16 June 2011. The field operation consisted of 15 vehicles conducting four to five vehicle convoys to encounter simulated threats including improvised explosive devices and small arms fire. The training enhances operators' awareness of surroundings and their ability to operate the vehicles.
Marine Corps Tractor, Rubber Tired, Articulated Steering, Multipurpose Vehicle (TRAM) from Marine Expeditionary Service Support Group 24 offloads cargo off a 7-ton MTVR on Ft. A.P. Hill VA, on 5 Jan 2006. MSSG-24 will be responsible for setting up logistical support for themselves and Battalion Landing Team 1st Bn., 8th Marines. Both units are part of the 24th MEU, and will be conducting training here as part of their pre-deployment training program.
A marshalling yard is filled with MK-23 trucks, High-Mobility Multipurpose Wheeled Vehicles (HMMWV) and 5-Ton cargo trucks, in support of Operation ENDURING FREEDOM.
MK27/MK28 Extra Long Wheel Base Cargo variant of the MTVR family carries Marines from Marine Wing Support Squadron during a simulated IED response aboard Graze Range, Yuma Proving Grounds, Yuma, AZ, 7 June 2006.
MK36 7 ton Wrecker, MTVR variant, Okinawa.

MTVR Armor System (MAS)

MK23 MTVR with MTVR Armor System (MAS)
MK23 MTVR with MTVR Armor System (MAS).

Experience in Iraq generated the need to armor the MTVR vehicles. The MTVR Armor System (MAS) is designed specifically for the Medium Tactical Vehicle Replacement (MTVR) vehicles and was developed through the Engineering Change Proposal (ECP) process. The kit provides complete 360-degree protection as well as overhead and underbody protection for the crew compartment utilizing Mil-A-46100 High Hard Steel and Metal Composite. The MAS is intended as a permanent modification to the vehicle, and includes an upgraded front suspension and cab rebuild. The kit includes a removable personnel carrier (with ballistic glass), air conditioning system, and machine gun mount. Each MAS kit for sn MTVR variant is specific to that vehicle. MAS is also produced in reducible or non-reducible models to meet all mission requirements. The MTVR Dump Truck and MTVR Tractor MAS Variants began fielding in December 2006.

To accept the armor kit, the standard MVTR requires modifications. After such modifications, the suffix "A1" is added to the model number, e.g. MK31A1. Modified vehicles are referred to as “ready to accept armor” (RTAA).

When armored, the prefix "A" is added to the model number, e.g. AMK31 Tractor.

Medium Tactical Vehicle Replacement (MTVR) Photo Gallery

Convoy of MK23 MTVR trucks from Battery F, Battalion Landing Team, 2nd Battalion, 2nd Marines, 24th MEU SOC, Iraq, 31 March 2003
Convoy of MK23 MTVR trucks from Battery F, Battalion Landing Team, 2nd Battalion, 2nd Marines, 24th MEU SOC, Iraq, 31 March 2003. Mark 19 Mod 3, 40mm grenade machine gun is mounted on top, and the truck is towing a M198 155mm howitzer.

MK23 MTVR from 24th Marine Service Support Group, Transportation Support Detachment, with a M-2 HB .50 Caliber machine gun, Al Rifa, Iraq, 17 April 2003.
MK23 MTVR from 24th Marine Service Support Group, Transportation Support Detachment, with a M-2 HB .50 Caliber machine gun, Al Rifa, Iraq, 17 April 2003.

MK23 MTVR with 2nd Battalion, 11th Marine Regiment, during Convoy Operations training, 29 Palms, CA, 24 April 2004.
MK23 MTVR with 2nd Battalion, 11th Marine Regiment, during Convoy Operations training, 29 Palms, CA, 24 April 2004.

MK23 MTVR with 3rd Battalion, 8th Marines (3/8), India Company, 3rd Squad, Al Anbar Province, Iraq, 20 April 2005
MK23 MTVR with 3rd Battalion, 8th Marines (3/8), India Company, 3rd Squad, Al Anbar Province, Iraq, 20 April 2005. The vehicle is configured with Medium Armor and using an MK 19 Mod 3 40 mm grenade machine gun system on the cab turret.

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