Specific: Acquired in the late
1950, and used by the engineers as tractor for a 20 ton
Canada trailer. Later they were re-assigned as tractors
for the Rogers M9 trailer used as HET´s. Probably replaced by the Mercedes
2632K/32 in the
Historical: The M-series 5-ton 6 x 6 range
replaced the various wartime 4- 7- and 7½-ton models and
was produced by Diamond T, International and Mack,
starting in the early 1950´s. The M52 was among the
earliest versions of the M-series 5 ton range (1952). It
was supplied also to the US Air Force, usually with the
optionally hard-top cab.
In the early 1960´s it was decided to
"dieselize" the M52 tractor and the M54 cargo
truck fleet to provide greater fuel economy. Commercial
engine from Cummins and Mack were tested. The Mack
ENDT673 was selected, and new trucks with this engine
received the suffix A1 to their model code. Mack supplied
these power units also for vehicles assembled by other
contractors and it applied to more models than the
initial M52A1 and M54A1 in 1962. Only just over 2.500
were built, though, because within 2 years the
Continental- and Hercules-build multi-fuel engines were
standardised as the A2-version.
Also produced by Kaiser Jeep/AM General. Production ended
in the 1980´s.
Length: 6.93 m (273 inches).
Width: 2.46 m (97 inches).
Height: 2.59 m (102 inches).
Weight: 9.100 kg (20.020 lb.).
Engine: 6-cylinder (Continental R6602), 9.870 cm3
(602 cubic inches) displacement, liquid cooled
Horsepower: 196 at 2.800 rpm.
Transmission: 5-speed, Spicer model 6352.
Transfer case: 2 speed with automatic front drive
Electrical system: 12 volt, negative ground.
Tyres: 11.00 - 20.
without preparation: N/A.
with deep water fording kit: N/A.
Fuel type: Petrol.
Fuel capacity: 500 liter (110 gallons).
Crew: 1 + 1.