Avia 21 / Avia 21/4 light truck
Basic type A 21 / A 21/4
The light truck Avia 21 / 21/4, 4 x 2 x 2 is designed for the transport of people and materials on roads. After production of the A 21 began, the entire range of versions was taken over from the A 15 / A 20 and produced on the A 21 chassis. The original four-speed gearbox could also be used on all versions. Vehicles so equipped are designated A 21/4. The Avia 21 (also A 21/4) tarpaulin-type trucks were produced in K and N versions. (The length of the overhang over the rear axle for the K type is 717 mm and for the N type is 1271 mm.)
The vehicles were equipped with the engine designation 712.18.
Technicko-taktické údaje
Základné rozmery
Wheelbase: 2680 mm
Front axle track: 1642 mm
Rear axle track: 1680 mm
Length A 21 K: 4662 mm
Length A 21 N: 5216 mm
Width: 1996 mm
Height over driver's cab unladen: 2230 mm
Height over tarpaulin without load: 2804 mm
Ground clearance: 225 mm
Storage area A 21 K: 2711 mm x 1870 mm
Storage area A 21 N: 3265 mm x 1870 mm
Sidewall height: 448 mm
Storage area clear height: 1831 mm
Height of storage area above the ground without load: 960 mm
Hmotnosti
Curb weight A 21 K: 2180 kg
Curb weight A 21 N: 2240 kg
Payload weight A 21 K: 2120 kg
Payload A 21 N: 2060 kg
Gross vehicle weight A 21 K, N: 4300 kg
Jazdné vlastnosti
Top speed (A 21 K, N): 95.5 km/h
Top speed (A 21/4 K, N): 95.5 km/h
Maximum gradient A 21 K, N: 29.9%
Maximum climb rate A 21/4 K, N: 31,1 %
Front approach angle: 24deg.
Rear approach angle: 27deg.
Minimum turning radius: 6m
Range per tank: 540 km
Fuel consumption: 11.5 l/100 km
Specifications of construction groups
Motor
Type: 712.18
Type: diesel, four-stroke, direct fuel injection
Fuel: NM-35 diesel fuel
Number of cylinders: 4
Cylinder bore: 102 mm
Cylinder bore: 110 mm
Engine capacity: 3595 cm3
Compression ratio: 17.5
Cylinder fuel injection sequence: 1-3-4-2
Maximum power: 61 kW at 3000 rpm
Maximum torque: 213 N.m at 1800 rpm
Cooling: liquid-cooled, forced circulation with connection to coolant exchanger
Lubrication: pressure, circulating
Air cleaner - air filter: SANDRIK-COL 260 in oil bath
Spojka
Type: dry, single disc, friction
Control: mechanical (steering pedal)
Prevodovka
Type: mechanical, five-speed, synchronised (except first gear and reverse), possibility of connecting an auxiliary drive
Shifting: mechanical, shift lever under steering wheel
Auxiliary drive (fitting only to gearboxes on special bodies)
Type: flanged box with single front gear transmission
Finishes:
- with flange for pump connection
- with outlet for universal use
Shifting: by moving the sleeve of the toothed clutch, which is operated electro-pneumatically from the driver's seat
Nápravy
Number: 2
Front: steered, independent wheel suspension, welded, fixed to the frame
Rear: driven, rigid, floating, pressed bridge and axle, welded
Rear axle differential: tapered with two satellites
Suspension: coil springs with progressive characteristics
Shock absorbers: telescopic, double-plate
Tyres: 7,50 / 16 10 PR, tubeless, diagonal
Wheels: disc wheels, with a recess in the rim for mounting tubeless tyres
Steering: mechanical, steering gear with globoid worm and pulley, steering shaft split, connected to worm by clutch
Brzdy
Service: drum, caliper (wheel), double-circuit, hydraulic with booster
Emergency: wheel, single circuit, without booster
Parking: wheeled - rear axle, mechanically operated by lever with push rods from the driver's seat
Kabína vodiča
Description: frontal, welded steel mouldings, two-door, with hinged engine cover under the middle seat
Seating capacity: 3, seated
Elektrická inštalácia
Electrical system: single conductor
Voltage: 12 V
Correction: 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 cartridges and their volumes
Fuel tank: 70 l
Air cleaner oil: 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 (kind: OA-PP 80)
Steering gear: 0,45 l (type: OA-PP 80)
Zdroj:
1. Tank and automotive technology in the Czech and Slovak army, published by: nakladatelství Naše vojsko, 2003, ISBN 80-206-0684-X
Basic type A 21 / A 21/4
The light truck Avia 21 / 21/4, 4 x 2 x 2 is designed for the transport of people and materials on roads. After production of the A 21 began, the entire range of versions was taken over from the A 15 / A 20 and produced on the A 21 chassis. The original four-speed gearbox could also be used on all versions. Vehicles so equipped are designated A 21/4. The Avia 21 (also A 21/4) tarpaulin-type trucks were produced in K and N versions. (The length of the overhang over the rear axle for the K type is 717 mm and for the N type is 1271 mm.)
The vehicles were equipped with the engine designation 712.18.
Technicko-taktické údaje
Základné rozmery
Wheelbase: 2680 mm
Front axle track: 1642 mm
Rear axle track: 1680 mm
Length A 21 K: 4662 mm
Length A 21 N: 5216 mm
Width: 1996 mm
Height over driver's cab unladen: 2230 mm
Height over tarpaulin without load: 2804 mm
Ground clearance: 225 mm
Storage area A 21 K: 2711 mm x 1870 mm
Storage area A 21 N: 3265 mm x 1870 mm
Sidewall height: 448 mm
Storage area clear height: 1831 mm
Height of storage area above the ground without load: 960 mm
Hmotnosti
Curb weight A 21 K: 2180 kg
Curb weight A 21 N: 2240 kg
Payload weight A 21 K: 2120 kg
Payload A 21 N: 2060 kg
Gross vehicle weight A 21 K, N: 4300 kg
Jazdné vlastnosti
Top speed (A 21 K, N): 95.5 km/h
Top speed (A 21/4 K, N): 95.5 km/h
Maximum gradient A 21 K, N: 29.9%
Maximum climb rate A 21/4 K, N: 31,1 %
Front approach angle: 24deg.
Rear approach angle: 27deg.
Minimum turning radius: 6m
Range per tank: 540 km
Fuel consumption: 11.5 l/100 km
Specifications of construction groups
Motor
Type: 712.18
Type: diesel, four-stroke, direct fuel injection
Fuel: NM-35 diesel fuel
Number of cylinders: 4
Cylinder bore: 102 mm
Cylinder bore: 110 mm
Engine capacity: 3595 cm3
Compression ratio: 17.5
Cylinder fuel injection sequence: 1-3-4-2
Maximum power: 61 kW at 3000 rpm
Maximum torque: 213 N.m at 1800 rpm
Cooling: liquid-cooled, forced circulation with connection to coolant exchanger
Lubrication: pressure, circulating
Air cleaner - air filter: SANDRIK-COL 260 in oil bath
Spojka
Type: dry, single disc, friction
Control: mechanical (steering pedal)
Prevodovka
Type: mechanical, five-speed, synchronised (except first gear and reverse), possibility of connecting an auxiliary drive
Shifting: mechanical, shift lever under steering wheel
Auxiliary drive (fitting only to gearboxes on special bodies)
Type: flanged box with single front gear transmission
Finishes:
- with flange for pump connection
- with outlet for universal use
Shifting: by moving the sleeve of the toothed clutch, which is operated electro-pneumatically from the driver's seat
Nápravy
Number: 2
Front: steered, independent wheel suspension, welded, fixed to the frame
Rear: driven, rigid, floating, pressed bridge and axle, welded
Rear axle differential: tapered with two satellites
Suspension: coil springs with progressive characteristics
Shock absorbers: telescopic, double-plate
Tyres: 7,50 / 16 10 PR, tubeless, diagonal
Wheels: disc wheels, with a recess in the rim for mounting tubeless tyres
Steering: mechanical, steering gear with globoid worm and pulley, steering shaft split, connected to worm by clutch
Brzdy
Service: drum, caliper (wheel), double-circuit, hydraulic with booster
Emergency: wheel, single circuit, without booster
Parking: wheeled - rear axle, mechanically operated by lever with push rods from the driver's seat
Kabína vodiča
Description: frontal, welded steel mouldings, two-door, with hinged engine cover under the middle seat
Seating capacity: 3, seated
Elektrická inštalácia
Electrical system: single conductor
Voltage: 12 V
Correction: 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 cartridges and their volumes
Fuel tank: 70 l
Air cleaner oil: 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 (kind: OA-PP 80)
Steering gear: 0,45 l (type: OA-PP 80)
Zdroj:
1. Tank and automotive technology in the Czech and Slovak army, published by: nakladatelství Naše vojsko, 2003, ISBN 80-206-0684-X
