Cold chain in West Africa is measured not in brochures but in the distance between the catch and the market, the hours the ice has, and whether the truck carrying it can be fixed in the town it is delivering to. The Aumark S built for Sierra Leone answers that test with a deliberately small, deliberately simple set of commitments: an 8.5-tonne refrigerated truck on a 4x2 layout with a 3360 mm wheelbase, a 5960 by 2135 by 2292 mm chassis, a single-row left-hand-drive cab for three, and an insulated box recorded at 4170 by 2100 by 2100 mm wearing a Thermo King RV589 refrigeration unit. Under the hood is a 3760 ml Foton Cummins making 115 horsepower and 500 N·m, married to a ZF six-speed, pushing a six-tonne rear axle through 4.3 gearing, riding leaf springs front and rear on a 214 mm frame, braking with air drums under ABS and EBD, and rolling on tubeless 7.50R16 tyres, six plus a spare. Everything on this list is chosen to survive heat, humidity and the gap between workshops.
The engine is the ISF3.8s3154 from Beijing Foton Cummins, a 3760 ml in-line four calibrated to Euro III, rated at 115 horsepower at 2600 r/min with 500 N·m of torque from 1200 to 1900 r/min. That torque window is the specification's quiet masterpiece, a genuinely wide plateau on a small diesel, which means the truck pulls away from a market kerb laden with a cold box, holds its gears on a coastal climb and keeps the refrigeration unit's load on the engine where the revs are doing useful work rather than straining for peak. Euro III matters more than it looks on paper in this market, because the record shows no aftertreatment route, no urea system and no dosing hardware, so there is no fluid supply chain to break, no catalyst to be poisoned by the sulphur that regional fuel stocks can carry, and no derate logic to strand a truck full of frozen fish at 35 degrees outside. For a cold chain truck whose cargo value rises as its technology falls out, mechanical-era simplicity is a commercial feature, and the ISF family's global service footprint makes it practical.
The transmission is a ZF 6S500, the German six-speed manual that is a rarity at this end of the market and a real point of difference on an order sheet, and the drive axle carries a 4.3 ratio. The pairing reads like a deliberate answer to Sierra Leone's operating envelope. Six ratios on a small diesel at 115 horsepower cover the start, the crawl, the intercity run and the over-revuated hill descent without the gaps that plague lighter boxes, and the 4.3 stepping is a working ratio that keeps the engine inside its fat torque band where a lighter truck's numerically low gearing would lug it, which matters enormously when a refrigerated body doubles the accessory load. The standard configuration lists power steering and cruise control, both of which describe real highway intent on this chassis, and the manual cab tilt, a light-truck convention, keeps the service bay cheap and the engine check honest.
Mass on this record is, unusually, coherent, and that deserves saying because so few listings can claim it. The GVW reads 8.5 tonnes while the axles are rated 2.85 tonnes front and 6 tonnes rear, an installed sum of 8.85 tonnes, which brackets the gross rating with a sensible margin instead of contradicting it, so the header and the hardware finally tell the same story. The arithmetic of payload still needs one missing number, the curb weight, which this record does not give: subtract it from 8500 kg and the remainder is the lawful cargo allowance for the insulated box, whose own weight, several hundred kilograms with a roof-mounted unit, must be counted before any tonnage is promised. For an 8.5-tonne light duty truck in refrigerated service the working rule is to weigh the completed vehicle once at delivery, write the real payload on the door, and price freight against that number, because in cold chain the fines, refused loads and failed compressors all trace back to optimistic tonnage.
The box is the business case, so read it precisely. The upper-equipment line records a Thermo King RV589 unit and an internal dimension of 4170 by 2100 by 2100 mm, which multiplies out to roughly 18.4 cubic metres of insulated volume, a floor area sized for pallets, crates and rails of fish rather than loose grain, with 2100 mm of internal height letting a man stand and work inside the load. A roof-unit reefer in this class serves chilled and frozen distribution, the coast-to-city runs of fresh fish, produce, dairy and pharmaceuticals, and the honest limits of the package must be stated: this record gives no wall insulation thickness, no door detail, no temperature range, no pull-down figure, no backup power or genset, and no bodybuilder name beyond the refrigeration model, all of which decide what cargo this reefer truck may lawfully and practically carry. The chassis-side implication is real too, because the engine now works continuously through the compressor duty that a dry-freight truck never imposes.
The running gear is conventional light-truck engineering chosen for repairability. The frame section is 214 by 65 by 5 mm, suspension is leaf springs front and rear with three leaves ahead and an eight-plus-six progressive pack at the rear, and braking is full air with drums at both ends under an ABS plus EBD control system. Air brakes on an 8.5-tonne chassis are the right call and a small triumph, because they give a heavy-vehicle stopping architecture with components every commercial workshop understands, the EBD split protects the unladen rear end that a dry drum setup would lock, and the drum choice suits grit, salt air and standing water that punish disc hardware in this climate. The 214 mm rails and the fourteen-leaf rear pack say the bodybuilder and the factory both expected this truck to be loaded, not merely loaded once, and the leaf-spring rear keeps the refrigerated body mounting simple, which matters because a reefer box transmits its corner loads straight into the chassis where cargo is racked by bad road.
Rolling stock and fuel define how far and how often, and both are honest here. Tyres are tubeless imperial 7.50R16, six plus a spare, the light-truck highway size with plug-repair convenience and a footprint suited to an 8.5-tonne axle group rather than a copied heavy specification, though fleets should verify local stocking of this size before order, since 7.50R16 is less universal in West Africa than the metric 215/75R16 family that shares its rim space. The fuel tank holds 120 litres, and on a 115-horsepower diesel that is a regional radius rather than a national one, sized for daily runs from a depot with a fuelling schedule rather than the long intercity legs a larger tank would support, and a cold box adds engine idle load that the tank size quietly prices in. For the second light duty truck role this chassis can play, dry distribution with the unit off, the same tank reads generously, which is the flexibility argument for buying a reefer spec instead of a plain van body.
The cab and equipment list is a working cab with almost nothing wasted, and that is appropriate for a truck whose value sits in its box. The single-row body carries three on knitted seats with a manual tilt cab for service access, manual windows and manual mirrors, an MP3 head unit for entertainment, and cruise control and power steering among the standard items, which are the two comfort features that actually pay on a long coastal run. Air conditioning appears on the record as a fitted option rather than a standard guarantee, and in this market the distinction is worth closing with money rather than leaving to a specification code, because a reefer driver in Sierra Leone works inside a cab adjacent to a running condenser, and cabin heat load becomes a fatigue and an alertness problem that no refrigeration unit solves. Nothing in the list pretends to luxury, and every item either earns its wage or is genuinely optional.
Three businesses fit this specification and one common use does not. The first is coastal protein distribution, the daily fish run from landing sites to cold rooms and markets, where 18.4 cubic metres of chilled volume, air brakes and a simple Euro III engine match the load, the roads and the workshops. The second is produce and dairy collection from hinterland farms to city retail, the classic role of an 8.5-tonne refrigerated truck in a tropical market, where pull-down speed on warm product matters and the wide torque band lets the engine carry the compressor without losing the schedule. The third is mixed-contract distribution for a beverage, food-service or pharmaceutical operator needing one truck that runs cold by day and dry by night. What does not fit is long-haul frozen transit across national distances, because the 120-litre tank, the single-row cab for three and the light-spec body package describe a radius operation, and any buyer planning overnight frozen corridors should price a larger chassis with auxiliary power before committing this one.
Ownership economics on this truck are unusually legible, because nearly every consumable is commodity. The ISF diesel has no dosing system to fail and a global service footprint; the ZF box, drum brakes, leaf springs and tubeless tyres are items any West African commercial workshop stocks and machines; and the reefer unit is a branded product with parts channels in every regional port city, which is precisely why Thermo King appears on the order sheet at all. The watch items are equally plain. Cooling capacity in this climate must be confirmed against the box insulation actually built, not assumed from the model number, so insist on pull-down and hold tests at handover; idle hours on cold-chain schedules quietly shorten engine service intervals, which makes oil and filter discipline the true maintenance budget; and no payload, temperature range, fuel consumption or warranty term appears in this record and none is claimed here, with the power figure and the 4.3 ratio to be checked against the certificate for the exact approved variant and Euro III acceptment verified for the intended ownership horizon. Send your cargo density, delivery radius and the body insulation you are being quoted, and this reefer truck can be confirmed as a cold chain asset with measured pull-down margins rather than a model number on a roof, and the cold chain truck plan built on certificate weights instead of the catalogue.
