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Kerb (with gasoline, oil, coolant, tool kit and spare wheel but not including driver)

Front……………………………………………1988 lb (902 kg)

Rear…………………………………………….1680 lb (762 kg)

Total……………………………………………3668 lb (1664 kg)

Laden (gross)

Front……………………………………………2240 lb (1016 kg)

Rear…………………………………………….2240 lb (1016 kg)

Total……………………………………………4480 lb (2032 kg)

BRIDGE CLASSIFICATION………………………….3

Unprepared………………………………………..2 ft 6 in (0.762 m)

Prepared…………………………………………...6 ft 6 in (1.980 m )

(based on knock-down height of 4 ft 0 in)……………..6 tons 6 cu ft

Type……………………………………………….B40, No. 1, Mk 2A/4 or

B40, No. 1, Mk 5A

Number of cylinders………………………………4 in line

Maximum bhp at clutch…………………………..69 at 3750 rpm

Maximum torque at clutch………………………..107 lb-ft at 2000 rpm

Bore……………………………………………….3.5 in (88.9 mm)

Stroke……………………………………………..4.5 in (114.5 mm)

Capacity…………………………………………..173.18 cu in (2838 cc)

Compression ratio…………………………………6.4 : 1

Valve tappet clearances - cold

Inlet……………………………………………0.010 in (0.254 mm)

Exhaust………………………………………..0.015 in (0.38 mm)

Distributor…………………………………………4 cyl, No. 1, Mk 2 - FV141534

Contact breaker gap…………………………...0.010 - 0.012 in (0.254 - 0.305 mm)

Speed limiter…………………………………..3650 - 3850 rpm engine speed

OR

Distributor…………………………………………4 cyl, No. 1, Mk 2/1 - FV141539

Contact breaker gap……………………………0.019 - 0.021 in (0.483 - 0.533 mm)

Speed limiter…………………………………..3650 - 3850 rpm engine speed

Ignition timing…………………………………….TDC or 4 deg ATDC when No. 1, Mk 2

distributor not incorporating Mod.

No. 7 are fitted

Ignition coil………………………………………..No. 1, Mk 2 - FV141532 or

No. 1, Mk 2/1 - FV175981

Firing order………………………………………..1-3-4-2

Sparking plugs……………………………………..14 mm, No. 1, Mk 1 LV6/MT4 3343

Gap……………………………………………..0.015 - 0.018 in (0.381 - 0.457 mm)

Loss of efficiency at altitudes of

5000 ft………………………………………….20.08%

10000 ft………………………………………...37.28%

Type of system……………………………………..Wet sump

Oil pump……………………………………………Gear type

Oil pressure - normal……………………………….35 lb/sq in (2.46 kg/sq cm)

Oil pressure at which warning light operates………3 - 12 lb/sq in (0.21 - 0.84 kg/sq cm)

Oil filter…………………………………………….Full flow type

Pressure relief valve………………………………..Spring-loaded two stage

Radiator…………………………………………….Gilled tube, Morris type "B"

5 row X 8 GPI

Fan………………………………………………….10 blade - 16.5 in dia

Circulation………………………………………….Thermo syphon pump assisted

Cooling control…………………………………….By-pass type thermostat

Average normal operating temperature…………….180 deg F

 Fuel pump…………………………………………..AC type - mechanical

Carburettor………………………………………….Solex - 40 WNHE 0/2

Choke…………………………………………..31 mm

Main jet…………………………………………145

Air cleaner…………………………………………..Oil bath type 135 cfm

Type………………………………………………..10 in single dry plate 10A6

Clutch pedal free movement……………………….3/4 - 1 in (19 - 25.4 mm)

Type………………………………………………..5 speed all synchromesh

No reverse

1^st…………………………………………………..5.46 : 1

2^nd………………………………………………….3.55 : 1

3^rd…………………………………………………..2.37 : 1

4^th ………………………………………………….1.53 : 1

5^th…………………………………………………..1 : 1

 TRANSFER GEARBOX RATIOS

Forward……………………………………………1.027 : 1

Reverse…………………………………………….1 : 1

AXLE RATIO……………………………………………...4.85 : 1

 OVERALL RATIOS - (engine to axles)

1^st speed……………………………………………27.25 : 1

2^nd speed……………………………………………17.71 : 1

3^rd speed……………………………………………11.82 : 1

4^th speed……………………………………………..7.62 : 1

5^th speed……………………………………………..4.99 : 1

 MAXIMUM SPEEDS (for above ratios)

1^st…………………………………………………..11.1 mph with 6.50 tyres

11.7 mph with 7.50 tyres

2^nd…………………………………………………..17.0 mph with 6.50 tyres

18.0 mph with 7.50 tyres

3^rd…………………………………………………..25.8 mph with 6.50 tyres

27.0 mph with 7.50 tyres

4^th…………………………………………………..39.7 mph with 6.50 tyres

41.9 mph with 7.50 tyres

5^th…………………………………………………..60.7 mph with 6.50 tyres

64.0 mph with 7.50 tyres

Average safe speed

(cross country)………………………………..20 mph (32.2 kph)

Maximum gradient climbable

(fully laden)…………………………………..1 : 2.5 (22 deg approx.)

Range of operation on road at 30 mph…………….440 miles (707 km)

Fuel consumption at 30 mph………………………22 mpg (7.7 km/litre)

Maximum speed on road

(engine speed 3750 rpm)…………………….64.0 mph (103 kph)

Maximum safe speed on road with trailer…………45 mph (72.4 kph)

Average maximum safe speed on road…………….50 mph (80.4 kph)

Approach angle - front…………………………….45 deg

Departure angle - rear……………………………..35 deg

Side overturn angle………………………………..45 deg

 TURNING CIRCLE

Left lock……………………………………………35 ft 0 in (10.668 m)

Right lock………………………………………….35 ft 0 in (10.668 m)

NETT POWER / GROSS WEIGHT RATIO……………34.5 bhp / ton

5^th speed 100% efficiency…………………………213 lb / ton

1^st speed 100% efficiency…………………………1335 lb / ton

 TYRES

Size………………………………………………..16 X 6.50 or

17 X 7.50

TYRE PRESSURES (for ADMIRALTY vehicles only)

Road use -

Front and rear - 6.50 tyres…………………….28 lb / sq in

Front - 7.50 tyres…………………………… 24 lb / sq in

Rear - 7.50…………………………………….20 lb / sq in

Cross-country use

Front and rear - 6.50 tyres…………………….20 lb / sq in

Front and rear - 7.50 tyres…………………….15 lb / sq in

WHEELS……..………………………………………….4.50E x 16 divided or

5.50F x 16 divided

 CAPACITIES (approx.) Imperial USA Metric

Fuel……………………………………………….. 20 gal 24 gal 91 litres

Air cleaner…………………………………………2 1/2 pints 3 pints 1.4 litres

Engine sump……………………………………….1 3/4 gal 2 gal 8 litres

Coolant…………………………………………….3 1/4 gal 4 gal 14.7 litres

Gearbox……………………………………………8 pints 9 1/2 pints 4.5 litres

Rear axle…………………………………………..4 1/2 pints 5 1/2 pints 2.5 litres

Front axle………………………………………….4 pints 4 3/4 pints 2.25 litres

Hubs…………………………………………each 1/2 pint 5/8 pint 0.28 litres

Tracta joint housings………………………..each 1/2 pint 5/8 pint 0.28 litres

Steering box……………………………………….3/4 pint 1 pint 0.43 litres

Brake fluid supply tank……………………………1/2 pint 5/8 pint 0.28 litres

Footbrake

Type……………………………………………Hydraulic operating on all wheels

Diameter of shoes……………………………...10 in (25.4 cm)

Width of shoes…………………………………1 3/4 in (44 mm)

Braking area - total…………………………….132 sq in (851.6 sq cm)

Brake pedal free movement……………………1/4 - 3/4 in (6.4 - 19 mm)

Handbrake

Type……………………………………………Mechanical operating on rear wheels only

 STEERING

Type……………………………………………….Helical rack and pinion

Number of turns of steering wheel -

lock to lock………………………………………..2 3/4

Front wheel toe-in…………………………………3/16 in (4.76 mm)

Wheel diameter……………………………………17 in (43.18 mm)

Castor angle...……………………………………..1 1/2 deg positive

Wheel camber

Front…………………………………………...1 1/2 deg positive

Rear…………………………………………….Zero deg

Wheel offset at road level………………………….1 1/16 in (26.6 mm)

 SUSPENSION

Type………………………………………………..Fully independent

Springs……………………………………………..Torsion bars

Wheel deflection

Static to bump…………………………………4 5/8 in (117 mm)

Static to rebound………………………………3 in (76 mm)

Wheel scrub

Static to maximum bump……………………..29/32 in (23.0 mm)

Static to maximum rebound…………………..1 1/4 in (31.7 mm)

Shock absorbers

Type…………………………………………...Telescopic, double acting hydraulic

Size…………………………………………….1 1/2 in (38.1 mm) or

1 3/8 in (34.9 mm)

 BATTERIES

For normal use on cargo vehicles

Type……………………………………………No. 1, Mk 1 - FV157947

Number off…………………………………….2

Voltage………………………………………...12

Capacity………………………………………..38 Ah

For normal and wireless use on FFW vehicles

Type……………………………………………No. 1, Mk 2/1 - FV175873

Number off…………………………………….4

Voltage…………………………………………12

Capacity……………………………………….40 Ah