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Unimog 6x6
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This Unimog U2450L 6x6
is seen being prepared by Mercedes Benz as
a Medium Recovery Vehicle for the Australian Army. 11/1999 -->
Its first tour of duty for the Army
was planned to be with InterFET in East Timor. late 1999 -->
The first of 55 Medium Recovery Vehicles (MRV) was recently
handed over to "Brigadier Pat McIntosh CSC, Commander
of the Brisbane based 7th Brigade".
The Army has purchased "almost 2000 [...] Unimog U1700L
four wheel drive trucks" since 1981.
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The Unimog's engine and transmission both sport an impressive
number of power take off (PTO) belts and drives for ancilliary equipment.
Becoming a recovery vehicle, this truck will eventually have
more winch power than you can poke a stick at.
The recovery equipment "is fitted to the MRVs by specialist
Brisbane company, Evans Deakin Engineering Pty Ltd.
Each unit is equipped with two rear-mounted 8-tonne winches,
an hydraulic underlift recovery system and
a Palfinger crane."
- 4wd.sofcom.com/4WD.html
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The view of the Unimog's front suspension clearly shows the live axle and
coil-spring suspension.
Note the portal axle, i.e. the axle tube
is much higher than the centre line of the wheels, thanks to
the hub-reduction gears, which allows huge ground clearance.
Water to 1200mm can be forded without special preparation.
A central tyre inflation system improves
cross country ability on soft ground.
- 4wd.sofcom.com/4WD.html
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At the back, both rear axles are driven to give full 6x6 traction.
Drive for axle #3 comes from axle #2 by a short prop' shaft,
the power divider being lockable.
All axles also have differential locks.
The gearbox has eight forward and eight reverse gears,
with a splitter and a two-speed transfer case
which make for a total of 32 ratios in both directions of travel.
It is impossible to make such a big truck completely rigid and
the Unimog's chassis can flex by several degrees,
so steps are taken to distribute stresses where cross-members
meet the chassis rails.
In addition, the mounts for rear bodywork (not yet fitted) are flexible.
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Mercedes-Benz Unimog 2450L 6x6 Medium Recovery Vehicle 1999
- Forward-control truck, 3 seats
- loa: 7580mm, width: 2500mm, height: 2800mm (cab),
weight: 13,500kg (unladen)
- payload: 4,500kg, GVM: 18,000kg, towing: 12,000kg (braked)
- wheelbase: 3900mm (1-2) and 5300mm (1-3), track: 1870mm,
grnd clearance: 495mm
- approach: 47 degrees, departure: 49
- turning radius: 9.25m
- Type OM 366 LA, 5958cc, diesel, 6-cyls,
turbo-charged intercooled, 2v/cyl ohv
- power: 177kW at 2600rpm, torque: 760Nm at 1700rpm
- transmission: 8x2 speed (in fwd & rev),
2-speed transfer case, part-time 6x6,
diff' locks, portal axles with hub-reduction
- suspension: live-coil/ live-coil, brakes: disc
- tyres: 14.5R20, fuel-tank: 165L (220L optional)
- 2 x 8-tonne winches, hydraulic under-lift system & Palfinger crane
Go to the
6x6,
Unimog,
Military Vehicle
and
Australian Army
pages
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