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Mack MC3

Heavy utility truck

Mack MC3

The Mack MC3 heavy utility truck is still in service with the Australian Army

Country of origin Australia
Entered service 1982
Configuration 6x6
Cab seating 1 + 1 men
Dimensions and weight
Weight (empty) 11.57 t
Maximum load 8 t
Length 9.6 m
Width 2.5 m
Height 3.16 m
Engine Mack EM6-285 Maxidyne diesel
Engine power 283 hp
Maximum road speed ~ 90 km/h
Range 550 - 590 km
Gradient 50%
Side slope 50%
Vertical step ~ 0.6 m
Trench ~ 1 m
Fording 0.8 m


   The Mack Model RM6866RS heavy truck was produced in Australia for the Australian Army as the Truck, Cargo, Heavy, or the MC3. It is a version of the US Mack R-series. Prototypes of this military truck were built in Australia in 1978. An order was placed in 1981 for a total of 906 vehicles. Deliveries to the Australian Army commenced in 1982 and all of these were delivered by 1986. In 1988, a further 19 trucks were delivered, bringing the total to 925 of all variants. In the mid-1990s the whole Australian Army's Mack MC3 fleet was upgraded for continued use. The Mack MC3 is still in service with the Australian Army, however it is now obsolete and due to be replaced with a modern military truck.

   This military truck has a conventional layout. A baseline variant has a payload capacity of 8 000 kg. A standard troop/cargo body can be covered with bows and tarpaulin. It can transport 26 fully-equipped troops in the cargo body. Twistlocks have been retrofitted on some variants, to enable transport of the containers. This military truck also tows various types of trailers.

   The Mack MC3 has a prominent bonneted cab, which has seating for the driver and one passenger. Many of the Mack MC3 components and subassemblies were produced in Australia. Vehicle is powered by a Mack EM6-285 Maxidyne turbocharged diesel engine, developing 283 hp. This military truck has a full-time all-wheel drive. Some vehicles were fitted with self-recovery winches.




   Cargo truck, fitted with a hydraulic crane. A crane is mounted behind the cab, however cargo area of this truck was reduced;

   Medium wrecker. It has been upgraded from the standard cargo truck. Its cargo body was replaced with a recovery rig. Vehicle has a towing capacity of 8 t;

   Heavy recovery vehicle, intended for specialized recovery role of heavy and medium trucks and light armored vehicles. It has been fitted with uprated engine and a modified cab. It entered service with Australian Army in 2005. A total of 64 units were ordered;

   Artillery tractor, used to tow the Australian Army's M198 155 mm howitzer. This truck is fitted with ammunition handling crane and is also also used to carry ammunition. It features a "kneeling" rear suspension and ammunition racks. The gun crew is carried in a collapsible canvas shelter behind the cab, which may be removed to provide more ammunition carrying capacity;

   Concrete mixer. It has a capacity of 5.5 m;

   Dump truck, fitted with a 8 m capacity dump body. In case of emergency it can carry up to 18 troops in the dump body. This variant also tow trailers carrying various construction equipment;

   Fuel tanker, used in the refueling role;

   Water tanker;

   Bituminous distributor. It has a 6x4 drive configuration;

   Bridge carrier, used to launch and recover ribbon bridge sections.


Mack MC3

Mack MC3

Mack MC3

Mack MC3

Mack MC3

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