Avia 31 light truck, Avia 31/4
The Avia 31 light truck, 4 x 2 x 2, is designed for the transport of people and material on roads. The chassis were produced with three sizes (lengths) of frames, which were characterized by different wheelbases and overhangs behind the rear axle. Type Avia 31 was derived from type Avia 30. The whole range of versions was taken over. The original four-speed transmission was also fitted to the Avia 31, the vehicle was called the Avia 31/4. All versions could have a rear axle with or without a differential lock. Cars Avia 31 (Avia 31/4) flatbed and flatbed with tarpaulin were produced only in versions N and L. Other superstructures remained the same as the type Avia 31 with their designation, which has not changed.
Vehicle designations by chassis frame type:
N - normal wheelbase 3240 mm, overhang 1960 mm
K - shortened wheelbase 2680 mm, overhang 1280 mm
L - extended wheelbase 3640 mm, overhang 2110 mm
The vehicles were equipped with an engine marked 712.18.
Technical and tactical data
Basic dimensions
Wheelbase A 31 K: 2680 mm
Wheelbase A 31 N: 3240 mm
Wheelbase A 31 L: 3640 mm
Wheelbase front axle: 1642 mm
Rear axle wheelbase: 1544 mm
Length A 31 K: 5202 mm
Length A 31 N: 6392 mm
Length A 31 L: 7244 mm
Width: 2246 mm
Height without driver's cab: 2265 mm
Height without tarpaulin: 3057 mm
Clear height: 242 mm
Storage area A 31 N: 4430 mm x 2246 mm
Storage area A 31 L: 5220 mm x 2246 mm
Side height: 449 mm
Clear height of the storage area: 1831 mm
Height of storage area above ground without load: 1212 mm
Weights
Standby weight A 31 N: 2860 kg
Standby weight A 31 L: 2930 kg
Payload A 31 N: 3130 kg
Payload A 31 L: 3060 kg
Total weight A 31: 5990 kg
Driving characteristics
Top speed: 85.5 km/h
Avia 31 highest climb: 23.3%
Avia 31/4 highest climb: 24.2%
Front approach angle: 23st.
Rear approach angle: 16st.
Smallest track radius when turning:
- A 31 N: 6.5 m
- A 31 L: 7.5 m
Range for one tank: 540 km
Fuel consumption: 13.8 l/100 km
Technical data of subassemblies
Engine
Type: 712.18
Type: diesel, four-stroke, with direct fuel injection
Fuel: diesel NM-35
Number of cylinders: 4
Cylinder bore: 102 mm
Cylinder stroke: 110 mm
Engine displacement: 3595 cm3
Compression ratio: 17.5
Fuel Injection Order into Cylinders: 1-3-4-2
Maximum power: 61 kW at 3000 rpm
Maximum torque: 213 N.m at 1800 rpm
Cooling: liquid, forced circulation with connection to the coolant exchanger
Lubrication: pressure, circulating
Air cleaner - air filter: SANDRIK-ČOL 260 in an oil bath
Coupling
Type: dry, single disc, friction
Control: mechanical (steering pedal)
Transmission
Type: mechanical, five-speed, synchronized (except first gear and reverse), the possibility of connecting an auxiliary drive
Gearing: mechanical, gear lever under the steering wheel
Auxiliary drive (mounting only for gearboxes on special bodies)
Type: flange housing with single gear spur gears
Executions:
- with flange for pump connection (gearing)
- with outlet for universal use
Shifting: by moving the sleeve of the toothed clutch electro-pneumatically from the driver's seat
Axles
Number: 2
Front: steer-steering, independent wheel suspension, welded, firmly attached to the frame
Rear: driven, rigid, floating, pressed bridge and axle, welded
Rear axle differential: conical with two satellites
Suspension: coil springs with progressive characteristics
Shock absorbers: telescopic, double-shell
Tires: 6.50/20 10 PR, tubeless, diagonal
Wheels: disc, with recess in the rim for mounting tubeless tires
Steering: mechanical
Brakes
Operating: drum, jaw (wheel), two-circuit, hydraulic with power steering
Emergency: wheeled, on one of the circuits, without power steering
Parking: wheeled - rear axle, mechanically controlled by a lever with rods from the driver's seat
Driver's cab
Description: front, welded from steel stampings, two-door, with hinged engine cover under the middle seat
Number of places: 3, seating
Electrical installation
Electrical system: single wire
Voltage: 12 V
Grounding: negative pole
Battery: 2 x 3T 150/6HI, 6 V/150 Ah
Alternator: PAL Magneton 14 V/42 A
Starter: PAL Magneton 12 V/2.95 kW
Operating charges and their volumes
Fuel tank: 70 l
Oil in air cleaner: 1.2l (type: OA-M6-AD)
Engine lubrication: 9.5 l (type: OA-M6-AD)
Transmission: 2.6 l (type: OA-PP 80)
Gearbox with auxiliary drive: 3 l (type: OA-PP 80)
Steering gear: 0,45 l (type: OA-PP 80)
Source:
1. Tank and automobile technology in the Czech and Slovak army, published by: Naše vojsko publishing house, 2003, ISBN 80-206-0684-X
The Avia 31 light truck, 4 x 2 x 2, is designed for the transport of people and material on roads. The chassis were produced with three sizes (lengths) of frames, which were characterized by different wheelbases and overhangs behind the rear axle. Type Avia 31 was derived from type Avia 30. The whole range of versions was taken over. The original four-speed transmission was also fitted to the Avia 31, the vehicle was called the Avia 31/4. All versions could have a rear axle with or without a differential lock. Cars Avia 31 (Avia 31/4) flatbed and flatbed with tarpaulin were produced only in versions N and L. Other superstructures remained the same as the type Avia 31 with their designation, which has not changed.
Vehicle designations by chassis frame type:
N - normal wheelbase 3240 mm, overhang 1960 mm
K - shortened wheelbase 2680 mm, overhang 1280 mm
L - extended wheelbase 3640 mm, overhang 2110 mm
The vehicles were equipped with an engine marked 712.18.
Technical and tactical data
Basic dimensions
Wheelbase A 31 K: 2680 mm
Wheelbase A 31 N: 3240 mm
Wheelbase A 31 L: 3640 mm
Wheelbase front axle: 1642 mm
Rear axle wheelbase: 1544 mm
Length A 31 K: 5202 mm
Length A 31 N: 6392 mm
Length A 31 L: 7244 mm
Width: 2246 mm
Height without driver's cab: 2265 mm
Height without tarpaulin: 3057 mm
Clear height: 242 mm
Storage area A 31 N: 4430 mm x 2246 mm
Storage area A 31 L: 5220 mm x 2246 mm
Side height: 449 mm
Clear height of the storage area: 1831 mm
Height of storage area above ground without load: 1212 mm
Weights
Standby weight A 31 N: 2860 kg
Standby weight A 31 L: 2930 kg
Payload A 31 N: 3130 kg
Payload A 31 L: 3060 kg
Total weight A 31: 5990 kg
Driving characteristics
Top speed: 85.5 km/h
Avia 31 highest climb: 23.3%
Avia 31/4 highest climb: 24.2%
Front approach angle: 23st.
Rear approach angle: 16st.
Smallest track radius when turning:
- A 31 N: 6.5 m
- A 31 L: 7.5 m
Range for one tank: 540 km
Fuel consumption: 13.8 l/100 km
Technical data of subassemblies
Engine
Type: 712.18
Type: diesel, four-stroke, with direct fuel injection
Fuel: diesel NM-35
Number of cylinders: 4
Cylinder bore: 102 mm
Cylinder stroke: 110 mm
Engine displacement: 3595 cm3
Compression ratio: 17.5
Fuel Injection Order into Cylinders: 1-3-4-2
Maximum power: 61 kW at 3000 rpm
Maximum torque: 213 N.m at 1800 rpm
Cooling: liquid, forced circulation with connection to the coolant exchanger
Lubrication: pressure, circulating
Air cleaner - air filter: SANDRIK-ČOL 260 in an oil bath
Coupling
Type: dry, single disc, friction
Control: mechanical (steering pedal)
Transmission
Type: mechanical, five-speed, synchronized (except first gear and reverse), the possibility of connecting an auxiliary drive
Gearing: mechanical, gear lever under the steering wheel
Auxiliary drive (mounting only for gearboxes on special bodies)
Type: flange housing with single gear spur gears
Executions:
- with flange for pump connection (gearing)
- with outlet for universal use
Shifting: by moving the sleeve of the toothed clutch electro-pneumatically from the driver's seat
Axles
Number: 2
Front: steer-steering, independent wheel suspension, welded, firmly attached to the frame
Rear: driven, rigid, floating, pressed bridge and axle, welded
Rear axle differential: conical with two satellites
Suspension: coil springs with progressive characteristics
Shock absorbers: telescopic, double-shell
Tires: 6.50/20 10 PR, tubeless, diagonal
Wheels: disc, with recess in the rim for mounting tubeless tires
Steering: mechanical
Brakes
Operating: drum, jaw (wheel), two-circuit, hydraulic with power steering
Emergency: wheeled, on one of the circuits, without power steering
Parking: wheeled - rear axle, mechanically controlled by a lever with rods from the driver's seat
Driver's cab
Description: front, welded from steel stampings, two-door, with hinged engine cover under the middle seat
Number of places: 3, seating
Electrical installation
Electrical system: single wire
Voltage: 12 V
Grounding: negative pole
Battery: 2 x 3T 150/6HI, 6 V/150 Ah
Alternator: PAL Magneton 14 V/42 A
Starter: PAL Magneton 12 V/2.95 kW
Operating charges and their volumes
Fuel tank: 70 l
Oil in air cleaner: 1.2l (type: OA-M6-AD)
Engine lubrication: 9.5 l (type: OA-M6-AD)
Transmission: 2.6 l (type: OA-PP 80)
Gearbox with auxiliary drive: 3 l (type: OA-PP 80)
Steering gear: 0,45 l (type: OA-PP 80)
Source:
1. Tank and automobile technology in the Czech and Slovak army, published by: Naše vojsko publishing house, 2003, ISBN 80-206-0684-X
Olivově zelená / Olive Green
