Three options were available:
a) 5.1 litre, 6-cylinder, 90 b.h.p.
at 2,400 r.p.m., torque 232 lb. ft. at 1,750 r.p.m.
b) 6.17 litre, 6-cylinder, 110
b.h.p. at 2,400 r.p.m., torque 285 lb. ft. at 1,100 r.p.m.
c) 7.7 litre, 6-cylinder, 125 b.h.p.
at 2,200 r.p.m., torque 335 lb. ft. at 1,100 r.p.m.
14" diameter, single plate, hydraulically operated.
Three types, dependant on engine.
5.1 litre engine: 5-speed constant mesh unit, indirect-drive and
overdrive versions, with a power take-off which could transmit
up to 30 hp. at 800 r.p.m. Ratios: direct drive gearbox (for
tractor chassis), 1st 6.12 to 1,
2nd 3.32 to 1, 3rd 2.38 to 1, 4th 1.55 to 1, 5th 1 to 1, reverse
4.62 to 1. Overdrive gearbox (trucks and tippers),
1st 6.12 to 1, 2nd 3.37 to 1, 3rd to 1.55 to 1, 4th 1 to 1, 5th
0.76 to 1, reverse 5.72 to 1.
6.17 litre engine: 6-speed constant-mesh
unit, with an overdrive top gear. All forward gears were in
constant mesh with engagement by dog clutches. A power-take-off
could be fitted. Ratios: 1st 6.988 to 1, 2nd 4.308 to 1, 3rd
2.655 to 1, 4th 1.605 to 1, 5th 1 to 1, 6th 0.76 to 1, reverse
6.343 to 1.
7.685 litre engine: inertia-lock
synchromesh unit with 5 forward speeds and one reverse; the
synchromesh acting on the 4 highest ratios; first and reverse
gears being of the sliding mesh type. Provision was made for
fitting a power take-off. Ratios: 1st 6.25 to 1, 2nd 4.40 to 1,
3rd 2.65 to 1, 4th 1.56 to 1, 5th 1 to 1, reverse 6.01 to 1.
Seamless, open, tubular, ropeller shafts with needle roller
bearing universal joints. The 9 ft. and 10 ft. 6 inch wheelbase models
had a single shaft, the longer 13 ft. 9 inch and 15 ft. 9 inch models
had two shafts, with connections being made through a robust
centre bearing. The tipper chassis
incorporated a single piece drive with Hardy Spicer couplings.
'I' section manganese molybdenum steel axle beam with
integral spring pads. 2¼ inch
diameter stub axle with taper roller bearings.
5.1 litre engine: Heavy duty Eaton two-speed axle with
finger-tip operated electric shift. Axle reduction ratios: 6.14
and 8.54 (trucks), 6.5 and 9.02 (tippers).
6.17 and 7.7 litre engine: Extra large capacity Eaton two-speed
axle with reduction ratios of 5.14 and 7.02 (tractor models, 6.5
Cam and double roller, 19¾
inches diameter steering wheel.
Bendix-Westinghouse air-hydraulic braking system,
actuating two-leading shoe brake units, giving controlled,
powerful braking. Front brakes 15¼
inches diameter x 4¼ inches
wide. Rear brakes 15½ inches
diameter x 6 inches wide. The hand brake operated on the rear
Overslung, 3 inches wide, semi-elliptic springs, 52 ins
long at the front, and 60 ins.long at the rear. Lever-type
hydraulic shock absorbers on the front axle were available as an
extra. On the 9 foot wheelbase tractor, the springs were 58
Wheels and Tyres
10.00 x 20, 14 ply tyres all round, fitted on
interchangeable 6.00 T. 10-stud wheels. A complete spare wheel
and winch type carrier were provided.
Rigid assembly ensured by the use of 9 ins. x 3 ins. x
¼ in. carbon-manganese steel,
channel section, with bolted-in frame members and cross members,
reinforced by flitch plates. Towing facilities were included at
the front and rear.
Compensated 24 volt lighting and starting control, with
89 ampere hour batteries, consisting of four 6 volt units.
Cylindrical welded steel tank of 33 gallon capacity on 9
ft. model, 40 gallon capacity on all other models. Larger
capacity, or dual tanks could be fitted on long wheelbase
Built in two sections, split at the waistline with a quickly
detachable top half for easy maintenance. It had a deep
wrap-round windscreen, fully adjustable seats, wind-down door
windows, and fully hinged quarter lights. Extras included an
external double skin, heater, and passenger tinted sun visor.