Technical characteristics of cars GAZ-66, GAZ-53

The GA3-66 vehicle is a two-axle truck, with a payload capacity of 2 tons, all-terrain, with drive on both axles. It is designed to replace the same type of GAZ-63 car produced by the plant

The GAZ-66 car has modifications:

GAZ-66-01 - a car with a tire pressure regulation system;
GAZ-66-02 - a car with a winch and a tire pressure regulation system;
GAZ-66-04 - a car with a tire pressure regulation system and shielded electrical equipment;
GAZ-66-05 is a car with a winch, a tire pressure regulation system and shielded electrical equipment.

When creating the GAZ-66 car, special attention was paid to obtaining high cross-country ability and driving stability.

To obtain a rational load distribution along the axles on the GAZ-66 car, the cabin is located above the engine.

The GAZ-53A car with a load capacity of 4 tons and rear axle drive is designed for transporting various cargoes on all types of roads. The main components of cars are interchangeable.

GAZ-53

Load capacity, kg 4000

Maximum weight of towed trailer with cargo, kg 4000

Vehicle weight in running order (without additional equipment) 3250 kg

The weight of the vehicle equipped with a winch is 3640 kg.

Overall vehicle dimensions, mm:

Length 6395
Width 2380

Height (cabin without load) 2220

Car base 3700 mm

Front wheel track (on ground) 1630 mm

Rear wheel track (on ground) 1690 mm

Lowest points of the car (with full load), mm:

Drive axle housings 265
Front axle 347

Turning radius along the track of the outer front wheel is 8 m

The highest speed of a fully loaded vehicle without a trailer (on a horizontal section of road with improved surface) is 80-86 km/h

Control fuel consumption when measured in the summer for a run-in car moving with a full load in fourth gear at a constant speed of 30-40 km/h on a dry, flat road with an improved surface and short inclines not exceeding 1.5% (1 ˚), l/100 km 24

GAZ-66

Load capacity 2000 kg

The largest weight of a towed trailer with a load of 2000 kg

Vehicle weight in running order (without additional equipment) 3440* kg

The weight of the vehicle equipped with a winch is 3640 kg.

Overall vehicle dimensions, mm:

Length 5655
Width 2342
height (cabin without load) 2440
height (on the awning without load) 2520
Car base 3300 mm
Front wheel track (on ground) 1800 mm
Rear wheel track (on ground) 1750 mm

Lowest points of the car (with full load), mm:

drive axle housings 310
Turning radius along the track of the outer front wheel is 9.5 m.

The highest speed of a fully loaded vehicle without a trailer (on a horizontal section of road with improved surface) is 90-95 km/h

Control fuel consumption when measured in the summer for a run-in car moving with a full load in fourth gear at a constant speed of 30-40 km/h on a dry, flat road with an improved surface and short inclines not exceeding 1.5% (1 ˚), l/100 km 24

Engine

Number of cylinders and their arrangement 8, V-shaped

Cylinder diameter 92 mm

Piston stroke 80 mm

Cylinder displacement, l 4.25

Compression ratio (average value) 6.7

Maximum power (limited by regulator) at 3200 rpm, hp 115

Maximum torque at 2000 - 2500 rpm, kGm 29

Cylinder operating order 1-5-4-2-6-3-7-8

Cylinder block - Cast from aluminum alloy integral with the upper part of the crankcase, equipped with wet, easily removable liners, which in the upper part have an insert made of anti-corrosion cast iron

Cylinder heads - Removable aluminum alloy, common to four cylinders in each row

Pistons - Aluminum alloy, tin-plated, flat bottom

Piston rings Cast iron, two compression and one oil scraper; the upper compression ring is chrome-plated, the rest are tin-plated

Piston pins - Floating type, steel, hollow

Connecting rods - Steel, forged, I-section, with a bushing in the upper head and steel liners, with an anti-friction layer in the lower head

Crankshaft - Cast from high-strength cast iron, four-jointed. There are dirt traps in the connecting rod journals

Main bearings - Thin-walled, trimetallic liners, identical for each of the five bearings

Camshaft - Steel, forged, on five supports, equipped with rolled bushings with an anti-friction layer

Distribution drive dividing shaft - Pair of helical gears

Valves - Located in the cylinder head in a row. Exhaust valves are sodium cooled

Pushers - plunger type

Valve drive - Pushrods, rods and rocker arms

Valve distribution phases (with a gap between valves and rocker arms of 0.35 mm)

- intake valves:

opening 24° to E. m.t.
closing 64° after n. m.t.

- exhaust valves:

opening 50° BC m.t.
closing 22° after c. m.t.

Inlet and outlet pipelines - The inlet pipeline is cast from aluminum alloy with liquid heating of the mixture;

exhaust pipelines (right and left) - cast iron

Lubrication system - Combined: pressure and splash

Oil pump - Gear type, two-section.

Oil is supplied from the upper section to lubricate the engine, the lower section supplies oil to the centrifugal oil filter

Oil filter - Centrifugal

Crankcase ventilation - Open type

Engine cooling - Liquid, forced, with a centrifugal pump

The cooling system has a thermostat installed in the exhaust pipe

Fan - Six-bladed, driven by a V-belt from the crankshaft

Fuel pump - Diaphragm with additional manual drive

Fine fuel filter - Ceramic or mesh

Carburetor - K-126B, two-chamber, balanced, with falling flow

Revolution limiter - Pneumatic centrifugal type

Air filter - Inertia-oil with contact filter element

Transmission

Clutch - Single disc, dry

Gearbox - Three-way, with synchronizers in third and fourth gears

Gear ratios:

first gear 6.48
second 3.09
third 1.71
fourth 1.0
reverse 7.9

Transfer box - Has two gears: direct and reduction with a gear ratio of 1.982

The GAZ -53 cardan transmission has two shafts and three cardan shafts, is equipped with an intermediate support, the GAZ 66 has three shafts and six cardan shafts

The main gear of the drive axles is conical, hypoid type, gear ratio 6.83

Differential:

GAZ-53 - Bevel gear;
GAZ-66 - Cam, increased friction

Rotating pins:

GAZ-53 flanged, pivot
GAZ-66 Have cardans of equal angular velocities

Chassis

GAZ-53 tires - Low pressure 8.25—20 or type P

GAZ-66 tires – Ultra-low pressure 12.00–18

Front wheel alignment angles:

- wheel camber angle

GAZ-53 1˚
GAZ-66 0˚45'

= angle of lateral inclination of the kingpin

GAZ-53 8°
GAZ-66 9˚

- angle of inclination of the lower end of the kingpin forward

GAZ-53 2°30'
GAZ-66 3˚30'

- wheel alignment

GAZ-53 1.5-3 mm
GAZ-66 2-5 mm

Springs - Four longitudinal semi-elliptical, ends embedded in rubber supports

Shock absorbers - Hydraulic, telescopic, double-acting

Car GAZ-53 - Installed on the front axle

Car GAZ-66 - Installed on both axles

Steering

Steering mechanism type - Globoidal worm with three-ridge roller

Gear ratio - 20.5 (average)

Power steering - hydraulic

Tie rod - Tubular. The connections of the rod with the steering bipod and the steering axle lever have ball pins and springs, the tightening of which is regulated

Transverse steering rod GAZ -53 - Tubular, connected to the levers by means of hinges of a non-adjustable design

GAZ -66 transverse steering rod - rod, connected to the steering axle levers via ball pins

Brakes

Cut brakes - Shoe brakes on four wheels

Foot brake drive - Hydraulic with hydraulic vacuum booster

Handbrake GAZ-53 - Central drum type on the driven shaft of the gearbox

Handbrake GAZ-66 - Central drum type on the driven shaft of the transfer case

Electrical equipment

Wiring system - Single-wire with connection of the negative terminal to ground

Network voltage, V - 12

Generator GAZ 53A - G130-G, power 350 W, GAZ-66 - G130-V or G130-E, power 350 W

Relay-regulator GAZ 53A - RR 130, GAZ-66 - RR 130 or RR111

Battery 0 6-ST-66-EM

Starter - ST130-B with remote activation

Ignition coil GAZ 53A - B-13, GAZ-66 - B13 or B5-A with additional resistance SE102

Distributor-distributor GAZ 53A - P13-B, GAZ-66 - P13-B or P105

Spark plugs GAZ 53A - A11-U, GAZ-66 - A11-U or A15-B

Cabin and platform

Cabin - Metal, double, two-door.

The cabin is equipped with a heater, two windshield wipers, a glass washer, sun visors, soft seats, and floor mats. There is a removable hanging bed.

The GAZ 53A platform is wooden with a metal frame. Folding sides - rear and both sides

GAZ-66 platform - Metal. It has three longitudinal benches and a soft, removable awning. Rear tailgate

Dimensions of the GAZ 53A platform, mm:

Length 3740
Width 2170
side height 680

Dimensions of the GAZ-66 platform

Length - 3330
Width - 2050
Height of sides - 890

Special equipment GAZ 66

Winch - Maximum force on the cable is 3500 kg. cable length 50 m.

Drive by cardan shafts from the power take-off

Power take-off - Has two gears: for winding and unwinding the cable

Compressor - Single-cylinder, air-cooled

Adjustment data

Gap between rocker arms and valves on a cold engine (temperature 15-20°C), mm - 0.25 - 0.30

It is allowed to set the gap at the outer valves of both rows (intake of the first and eighth, exhaust of the fourth and fifth cylinders), mm 0.15 - 0.20

The gap between the spark plug electrodes is 0.8 - 0.9 mm

The gap in the breaker is 0.3 - 0.4 mm

Clutch pedal free play, mm GAZ 53A 32—42, GAZ-66 35—45

Free play of the brake pedal, mm 8 - 13

Air pressure in tires, kg/cm ²: