REV DSection 2 • SpecificationsJune 2007Part No. 97487 GTH-636 • GTH-644 • GTH-842 • GTH-844 • GTH-1048 • GTH-1056 2 - 7John Deere 4045TF270 EngineGTH-636, GTH-644, GTH-842 and GTH-844Displacement 275 cu in4.5 litersNumber of cylinders 4Bore & stroke 4.19 x 5 inches106 x 127 mmHorsepower 99 @ 2500 rpm73.8 kw @ 2500 rpmFiring order 1 - 3 - 4 - 2Low idle 900 rpmFrequency 180 HzHigh idle 2600 rpmFrequency 520 HzCompression ratio 17:1Valve clearances, coldIntake, allowable range 0.012 to 0.015 in0.31 to 0.38 mmExhaust, allowable range 0.016 to 0.019 in0.41 to 0.48 mmIntake, recommended setting 0.14 in0.36 mmExhaust, recommended setting 0.18 in0.46 mmLubrication systemOil pressure 50±15 psi(at rated speed with full load) 3.4±1 barOil capacity 14 quarts(including filter) 13.2 litersOil viscosity requirementsUnits ship with John Deere Engine Break-In Oil.During the break-in period, add John Deere EngineBreak-In Oil as needed to maintain the specified oillevel.Extreme operating temperatures may require the use ofalternative engine oils. For oil requirements, refer to theEngine Operator's Manual on your machine.Injection systemInjection pump make StanadynePeak injection pressure 10,000 psi690 barFuel requirementFor fuel requirements, refer to the engine Operator'sManual on your machine.Engine coolantCapacity 2.6 gallons9.8 litersAlternatorOutput 95 A, 14V DCBatteryType 12V DCGroup C31Quantity 1Cold cranking ampere @ 0°F 1000AReserve capacity @ 25A rate 200 minutesContinuous improvement of our products is aGenie policy. Product specifications aresubject to change without notice.SPECIFICATIONS
