The MTVR replaced the Vietnam-era 5-ton trucks with commercial automotive technology. The unarmored MTVR has an increased payload of 7.1 tons off-road and 15 tons on-road, a high performance suspension, traction control, central tire inflation system, automatic transmission and corrosion technology upgrades.
There are several variants of the MTVR for different tasks, including a cargo variant in both standard and extended-length wheel base (XLWB) configurations, dump truck, wrecker and tractor. The dump and wrecker variants maintain maximum commonality with the basic MTVR cargo chassis while performing unique missions. The tractor variant serves as the prime mover for the Marine Corps’ Mk 970 5,000-gallon aviation and bulk-haul refueling trailer. The Navy also uses MTVR vehicles for construction battalion (Seabee) operations. The HIMARS resupply vehicle is an MTVR XLWB cargo variant that was procured with an associated trailer as part of the HIMARS artillery resupply system.
MTVR armor provides 360-degree protection as well as overhead and underbody protection for the crew compartment. MTVR armor protects against small arms fire, IEDs and mines. It includes upgraded suspension, air conditioning system, removable armored personnel carrier (with ballistic glass) for cargo variants, machine gun mounts and the Marine Corps Transparent Armor Gun Shield. The armor is a permanent modification to the vehicle. The “reducible height” armor configuration allows for removal of the cab roof to accommodate Maritime Prepositioned Force space requirements. Armor is to be installed on all MTVR variants deployed to hostile environments.
The MTVR’s Medium & Heavy Tactical Vehicle Program Management Office (PMO) has continued to improve MTVR armor in response to Urgent Universal Needs Statements (UUNSs) — adding increased underbody blast protection, fuel tank fire protection kits and 300-amp alternator kits, as well as developing the reducible height armor configuration. In addition, live-fire testing has resulted in armor upgrades for non-reducible height armored MTVRs and the armored troop carrier. The PMO is developing additional safety upgrades, such as transportability improvements and emergency egress windshields, in response to UUNSs and operational force input. The PMO worked with the Office of Naval Research under Future Naval Capability to develop a fuel economy upgrade kit, scheduled to be fielded on armored MTVR’s beginning in FY19.
Recently, the USMC extended the service life of the MTVR from 2024 to 2042. A Business Case Analysis (BCA) is underway that will provide a report on the actions and cost required to extend the service life of the MTVR fleet to FY2042 and potentially beyond. This will include any modernization efforts required to maintain the viability of the platform to enable the vehicle to maintain current requirements and avoid obsolescence issues through the extended lifecycle.
More than 1,000 MTVRs have seen service in support of Operation Iraqi Freedom, Operation Enduring Freedom, and humanitarian-assistance and disaster relief missions.
Program is in lifecycle sustainment.
Oshkosh Defense Corporation,