Heavy Duty Trucking, May 2018
HDT MAY 2018 44 WWW TRUCKINGINFO COM TEST DRIVE The LR cab features large front windscreen glass areas and channeling overhead to divert rain and wastewater away from windows and doors The LR can be driven from both the left and right cab positions Vehicle speed is limited to 20 mph in the right hand seat hydraulic lines Dorwart said simplifying wire and hydraulic line routing with an emphasis on easier upfitting for the LR is a big reason for the trucks uncluttered look Various nods to the tough life refuse trucks live were in evidence as well including wiper motors that can be serviced or swapped out from a standing position at the front of the truck by simply removing four screws and a front grille and windshield that can be swapped out quickly Up above the cab the roofing sheet metal is designed to act much like a storm gutter on a house and route rain or refuse water away from the front and side windows and cab doors Both the left and right hand operating stations are compact thanks to the massive doghouse that dominates the middle cab section but still comfortable Visibility to all quarters is outstanding thanks to large window sections to the sides and rear of the cab Views forward are excellent as well as Mack engineers enhanced the LRs cab forward no hood design by adding wrap around front glass sections that extend in an unbroken line all the way back to the B pillars Standard power memory programmable mirrors and an array of cameras covering the sides and rear of the truck complete the LRs visibility emphasis An array of view screens is positioned in the middle of the cab where operators on both sides of the truck can quickly check live video feeds from the safety cameras around the vehicle Dorwart also pointed out the LRs automotive style controls which include a surprisingly small steering wheel and an instrument cluster connected to the tilt steering column The arrangement is compact easy to see and ensures clear sightlines to the gauges regardless of where the driver positions the steering wheel The doghouse covers both the LR engine and a powerful hydraulics system capable of handling the latest side loading trash receptacle boom arms Various boom and vehicle controls are located on the top of the doghouse and are within easy reach from both operator stations Other new automotive style features include a highly effective in dash HVAC SPECIFICATIONS Mack LR Specs Model Mack LR Refuse Truck with left and right hand steer positions Wheelbase 186 inches Engine Mack MP 7 355A Horsepower 355 hp Torque 1280 lb ft at 1000 1450 rpm Transmission Allison 4500 RDS 6 automatic 6 speed Engine brake Mack PowerLeash Front axles Mack FXL20 Front axle rating 20000 lbs Rear suspension Mack S246R Rear suspension rating 46000 lbs Rear axle Mack mRide Rear axle ratio 5 31 Brakes front and rear Meritor 17 in EX Plus air disc
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