Heavy Duty Trucking

OCT 2014

The Fleet Business Authority

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40 HDT • OCTOBER 2014 www.truckinginfo.com Under the hood was a 12.9-liter Paccar MX-13 diesel. This one had the latest 500 horsepower rating — some- thing undreamed of for 788 cubic inches, a displacement we used to call "mid-bore" back when it took true big-bore diesels with 855, 928 or 998 cubes to make that much. So we never lacked for go power on our 50-mile loop, and were back at the factory in less than an hour. Even though we weren't heavy-hauling on this trip, the T880 was capable of it, with a GCW rating of 144,000 pounds. Its MX-13 was housed under a moderate-length hood that added up to 116.5 inches from bumper to the back of the cab. This model can also be had with a lon- ger hood and 122.6-inch BBC, which is standard for the optional, larger Cummins ISX15. The standard T880 radiator is more than adequate to cool the engine for this level of heavy-haul service, Fennimore said. Eventually there will be a wide-hood version with a bigger radiator, as there now is with the T800, for extra-heavy, slow- speed duties. The walk-around Before we departed, Fennimore walked me around the tractor and pointed out some of its beefy equipment, such as the 20,000-pound steer axle with its big 425-series tires, the liftable pusher axle that's also rated for 20K, and the test drive Tractor: Kenworth T880, conventional-daycab heavy-haul tractor, BBC 116.5 inches, GVW 84,500 lbs., GCW 144,000 lbs. Engine: Paccar MX-13, 12.9 liters (788 cu. in.), 500 hp @ 2,100 rpm, 1,850 lb.-ft. @ 1,150 rpm Transmission: Eaton Fuller FO18E318B UltraShift 18-speed automated manual Steer axle: 20,000-lb. Dana Spicer D2000 w/ twin Sheppard hydraulic power on 22,000-lb. taper leafs Pusher axle: 20,000-pound Watson & Chalin SL2065 Rear axles: 46,000-lb. Dana Spicer D46-170HP w/ 4.10 ratio, on 46,000-lb. Kenworth Air Glide AG460 8-bag Wheelbase: 244 in. Tires & Wheels: Front: Goodyear G296 425/65R22.5; rear: Goodyear G182 RSD 11R24.5, on Alcoa polished aluminum discs Brakes: Steer and tandem axles: Bendix air disc w/ 6-sensor/6- channel ABS and automatic traction control; lift axle: Bendix S-cam drum Fuel tank: Single 130-gal. aluminum SPECIFICATIONS Heavy specs include tall, reinforced frame rails, 20,000-pound steer and pusher axles, and a long fifth wheel slider for proper weight distribution when the pusher-type lift axle's up or down. Like other modern diesels of its size, the 12.9-liter MX-13 makes healthy power and torque. PHOTOS: TOM BERG

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