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Beginning in 2001, the U.S. Navy and Marine Corps Medium Tactical Vehicle Replacement (MTVR) program superseded the M-939 and M-809 5-ton trucks with a fleet of state-of-the art, commercially based, medium trucks with greater mobility, lift, and reliability.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

Marine from Marine Wing Support Squadron-271 (MWSS-271), Cherry Point, NC, offloads water from a holding tank onboard the MK28 Medium Tactical Vehicle Replacement (MTVR) as part of humanitarian efforts in support of Operation IRAQI FREEDOM, 8 April 2003. This village is home to about 200 Iraqi farmers and is located near Three Rivers in Iraq.
Seabees from Naval Mobile Construction Battalion 3 (NMCB 3) operate a armored  loader to fill an MTVR MK29 dump truck with dirt from one project in Camp Bastion, the British base connected to Camp Leatherneck, to another project in Camp Leatherneck, Afghanistan, 20 November 2010.
A sea-based MTVR begins to roll off during a Maritime Pre-positioning Force (MPF) Offload exercise conducted by Marines and sailors of U.S. Marine Corps Forces Europe, circa 2008.
USMC MTVR 7 ton truck and trailer, manufactured by Oshkosh Truck Corporation, Oshkosh, WI.
U.S. Marine Corps Marines, Lima Company, Task Force 3rd Battalion, 8th Marine Regiment (Task Force 3/8), prepare to patrol Ar Ramadi, Al Anbar Province, Iraq, 19 April 2006.  The vehicle is an Up-Armored 7-ton 6x6 MTVR truck used in search of improvised explosive devices (IED), rocket propelled grenades (RPG), and other weapons used by insurgents in the area.
US Navy Seabees assigned to Alpha Company, Naval Mobile Construction Battalion 74 and Alpha Company, NMCB-7 inspect a Medium Tactical Vehicle Replacement tractor (Tractor, MK31 MTVR) and flatbed trailer for the Battalion Equipment Evaluation Program (BEEP) at Camp Mitchell, Rota, Spain, 11 December 2010.  Trailer appears to be civilian, similar to M871.

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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