ZIL-5301

ZIL-5301 at a glance: maker, years and purpose

ZIL had built heavy and medium trucks such as the ZIL-130 for decades, but it had no light truck in the 3-tonne class. In the early 1990s demand for its traditional medium trucks fell sharply, and the company needed a smaller, cheaper vehicle for city deliveries, small businesses and municipal services. Rather than develop everything from scratch, ZIL turned to Daimler-Benz and based the new truck on the chassis of the Mercedes-Benz T2, the light truck that Mercedes replaced with the Vario in 1996.

The Bychok became ZIL's last mass-produced model. Its story is part of the history of ZIL, and the company's other trucks are listed in the ZIL catalogue.

Development and the Mercedes-Benz connection

Development began in 1992. To save time and money, the prototype combined bought-in and existing parts: a Mercedes-Benz T2 chassis, the cab of the ZIL-4331 and the gearbox of the ZIL-130. ZIL engineers did not simply copy the German truck: they reworked the design for local production, rough roads and lower costs, so the series ZIL-5301 is a separate design rather than a licensed Mercedes.

A prototype was shown in 1993, and about 200 pre-series trucks were built in 1994 and 1995, still on the Mercedes T2 chassis. Series production started in 1996. ZIL had hoped to agree further projects with Mercedes-Benz, including local production of commercial vehicles, but financial problems prevented them. A later plan for the Mercedes-Benz Sprinter to replace the ZIL-5301 passed to GAZ when ZIL began to close.

Cab and body

To cut costs, the ZIL-5301 used solutions already proven at the plant. The three-seat cab came from the ZIL-4331, with new headlights and a short bonnet that tilts backwards for access to the engine. A four-door, double-row cab with six passenger seats was developed for utility companies and fire services, and long versions with a sleeping berth were also offered.

Typical features of the cab:

• Short bonnet that opens towards the windscreen.
• Separate driver's seat on a suspension mechanism, with adjustable stiffness, cushion and backrest angle.
• Double passenger seat.
• Heater connected to the engine cooling system.
• Three-blade electric windscreen wiper and electric washer.
• Large two-spoke steering wheel that makes manoeuvring easy.

Early trucks had poor sound and heat insulation: the engine was audible even at low revolutions, the cab cooled quickly in frost, and the paint on the bonnet could peel within months. The roof ventilation hatch was popular with drivers but often leaked. Later trucks received much better insulation and a stronger heater, and drivers generally praised the comfortable, durable seat.

Engines and gearbox

Early engines proved unreliable in hard urban service, so ZIL standardised on diesel engines from the Minsk Motor Plant (MMZ) in Belarus. The MMZ D-245 was originally a tractor engine used in Belarus tractors; turbocharged versions went into medium trucks and buses, starting with the ZIL-5301.

All D-245 versions are four-cylinder, four-stroke in-line diesels with direct injection, a displacement of 4,750 cc, a bore of 110 mm, a stroke of 125 mm and a cast-iron block. The engine alone weighs about 450 kg. In real use, owners report service lives of more than 300,000 km. The prototype used the ZIL-130 gearbox, and the clutch and gearbox are regarded as among the most reliable parts of the truck.

ZIL-5301 specifications

Data for the basic flatbed platform version.

ZIL-5301 variants and modifications

Beyond the factory variants, bodybuilders made tippers, double-cab fire trucks, recovery vehicles (some with three axles) and an all-wheel-drive version. The chassis also served as the base for the ZIL-3250 and KAvZ-3244 buses.

In service: reliability and common problems

The Bychok was in demand with private carriers, delivery companies and municipal services because it was affordable, easy to repair and carried more than a light van. Its known weak points were:

• Rear axle final drive: differential gears, spider and pinions wear faster than other parts.
• Suspension components that need regular attention.
• Brake fluid leaks from the reservoir on many trucks, and fragile protective boots on the brake callipers.
• Early cabs with weak insulation, a leaking roof hatch and poor high-beam lights.

The clutch and gearbox rarely cause trouble, and the D-245 diesel is regarded as durable if it is serviced regularly. Later trucks were noticeably better assembled than early ones.

Successors and legacy

The ZIL-5301 had no direct successor: after ZIL's insolvency, production ended in 2014. Its niche was filled by trucks such as the GAZon NEXT, successor of the GAZ-3307. The Bychok also shows how ZIL combined foreign know-how with its own parts, an approach the plant could not repeat before it closed. More commercial vehicles are listed among trucks.

Buying and preserving a ZIL-5301 today

Surviving trucks are usually working vehicles with high mileage. When inspecting one, check:

• Rear axle noise and play in the final drive.
• Brake fluid level and leaks at the reservoir and callipers.
• Corrosion on the cab, bonnet and frame.
• The condition of the turbocharger and intercooler on the D-245 engine.
• Documentation of the engine version and emission class, which affects registration in some countries.