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Medium Tactical Vehicle Replacement (MTVR) 7 ton 6x6

Today in WW II: 22 Aug 1942 Brazil joins the Allies, declares war on Germany and Italy; Brazilian Expeditionary Force [FEB] sent to fight in Italy from mid-1944 until the end of the war.   

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Beginning in 2001, the U.S. Navy and Marine Corps Medium Tactical Vehicle Replacement (MTVR) program superseded the M-939 and M-809 5-ton trucks with a fleet of state-of-the art, commercially based, medium trucks with greater mobility, lift, and reliability.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:

A Marine stands in front of a parked MK31 Medium Tactical Vehicle Replacement (MTVR) tractor truck with an attached M970 semitrailer aircraft refueler at Bull Assault in the Chocolate Mountains, Imperial County, CA, 5 April 2011. The Marines are using the refueler to refuel helicopters taking part in training exercises.
Experimental gun truck armor kit using MTVR cargo truck as base vehicle, Aberdeen Test Center, 2004.  With funding from the Defense Advanced Research Projects Agency (DARPA) and in collaboration with the U.S. Army, gun truck armor kits for M939, FMTV, and MTVR were deployed to provide convoy protection for American troops on the roads of Iraq.
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.
Truck, Cargo, 7-ton, Extended Bed (XL) MK27/28, MK27A1/MK28A1.  The MK27/MK28 Extra Long Wheel Base Cargo variant of the MTVR family replaced the M814, M927, M927A1, M928 and the M928A1. The MK28 has a 20,000-pound capacity self-recovery winch. The MK27/MK28 is a 7-ton, 6x6 designed for use on all types of roads, highways and cross-country terrain. It is capable of traversing a 60 percent gradient, a 30 percent side slope up to 15 mph and a 40 percent side slope at 5 mph with its maximum cross country load.  The MK27A1/ MK28A1 are the 'ready to accept armor (RTAA)' versions of the MK27/MK28, which include upgraded cab mounts, armored flooring, upgraded suspension, and air conditioning. The MK27A1/MK28A1 are not considered to be armored vehicles, and are interchangeable with the MK27/MK28 for (T/E) allowances.
Truck, Cargo, 7-ton, Armored, w/o Winch, AMK27/AMK27A1.  The AMK27 is the MK27/MK27A1 with non-reducible MAS installed. The AMK27A1 is the MK27/MK27A1with reducible MAS installed. The AMK27A1 also features an extra long wheel base. Reducible MAS is reducible to a height of 98 in, and was designed to meet the height restrictions aboard naval ships. The MAS kits are designedfor the 7-ton MTVR. The kits provide complete 360-degree protection as well as overhead and underbody protection for the crew compartment.
The Transportation Demonstration Support Area displays an array of vehicles including MTVR, HMMWV, Kawasaki M1030 M1 Diesel Motorcycle and more, Marine Corps Base Quantico, VA, 4 August 2011. TDSA serves as the Marine Corps vehicle requisition center. Upgrades and new technology are also displayed for evaluation here. TDSA is located on 395 acres with tough obstacles and challenges specifically designed to showcase and demonstrate the latest vehicle and technology developments the Corps and private industry have to offer warfighters.

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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