Case 2550 Crawler Dozer Operator's Manual 84415720 - PDF DOWNLOAD

Page 17

2550

4 SPECIFICATIONS ENGINE Engine "emissioned" Net flywheel power (ISO 9249, SAE J1349, EEC 80/1269): .......................... 177 kW/237HP/2200 rpm Gross power:.................... 179 kW/240HP/2200 rpm Make and model ................... CUMMINS 6CTAA8.3 Type ......turbocharged, aftercooled, direcly injection 4-cycle diesel Number of cylinders .............................................. 6 Bore x stroke .................................... 114 x 135 mm Displacement ................................................... 8,3 l Governed .................................................. 2200 rpm Maximum torque ............... 114.6 daNm at 1400 rpm Lubrication ..................... full pressure by gear pump

Aftercooler Material: .................................................. aluminium Radiating surface: ..................................... 29.8 dm2 Operating pressure: ......................................... 2 bar

Starting Electric motor.

The machine may be operated up to 2500 m altitude without derating the machine. Engine complies with TIER 2 CE 97/68, and with U.S. standards CARB & EPA. Combined replaceable oil filter; the upper section includes the total flow filtering element, whereas the lower section contains the by-pass element. Minimum permissible lube pressure. - At low idle .................... 0.69 bar (69 KPa) (10 Psi) - At nominal rpm ........... 2.07 bar (207 KPa) (30 Psi) Oil sump capacity .................... 19 lit. (20 U.S. Qts.)

Lubrication Force-fed by gear type. Strainer on pump suction, total flow oil filtration on delivery line by replaceable cartridge filter. Oil cooled by water circulation type heat exchanger derived from the radiator. Low engine oil pressure indicator located on CONTROL MODULE.

Cooling Water type, force-circulated by centrifugal pump. Radiator: 6 tube row core. Fan: 900 mm, seven blade pusher. Fan speed: ............................................... 1328 rpm. Coolant circulation between engine and radiator controlled by thermostat. Engine coolant temperature and level indicators located on CONTROL MODULE.

TRANSMISSION Hydraulic torque converter with max stall torque ratio 3.28 : 1. “Powershift” transmission providing three forward and three reverse speeds, with five hydraulically controlled clutches. Pilot control gearshift located on left side of the operator. Safety lock lever preventing in “lock” position the operation of the pilot gearshift, automatically engaging the service brakes. Torque converter/transmission oil cooling by water type heat-exchanger recirculated from the engine radiator. Transmission oil filtered by two total flow filters; one metal mesh and magnetic rod on suction line, the other cartridge type with by-pass valve on delivery line.

Reduction units Central bevel gear type reduction. Reduction ratio: ......................................... 1 : 2.923 Double reduction final drives. Reduction ratio: ........................................ 1 : 12.410

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel


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