This 2012 Mack Granite GU713 is a used sewer truck — also referred to as a vacuum truck or vac truck — built for the collection, transport, and disposal of liquid waste, sewage, and industrial slurry. Mack Trucks is a long-established American heavy-duty vehicle manufacturer supplying the construction, municipal, refuse, and infrastructure sectors with robust vocational and on-highway trucks.
Power comes from a Mack MP8-505C inline six-cylinder diesel engine displacing 12.8 litres and rated at 505 horsepower, paired with an Eaton Fuller 18-speed manual transmission. The drivetrain provides a wide range of gear ratios suited to heavily loaded municipal and industrial work cycles. The truck runs on an 8x4 axle configuration with a 20,000 lb front axle and 44,000 lb rear axles, giving a gross vehicle weight rating of 64,000 lb. A double frame and dual steering boxes reinforce the chassis for the stresses of vacuum and tanker duty. The 272-inch wheelbase accommodates the full tank assembly while maintaining stability.
The vacuum system centres on a Fruitland 500 hydraulic pump, a well-regarded unit in the liquid waste and sewer-cleaning industry. The main tank holds 3,800 gallons and is constructed from aluminium, keeping tare weight in check while resisting corrosion from the materials typically handled. An aluminium debris tank is also fitted.
Ride and handling are supported by an air ride cab and air ride suspension throughout. Front tyres are 425/65R22.5 and rears are 11R24.5, both mounted on aluminium wheels. The truck is located in Texas, USA, is priced at $87,500, and is reported to run and drive.
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