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Common Test Conditions For All Caterpillar Engines
The charts that follow give the operating conditions at rated load and speed, for the systems that are common to all Caterpillar engines. All dynamometer specifications given for the lubrication system are with the use of CD SAE 10W oil unless shown differently on the test information charts in this instruction. Always check oil pressure on the clean side of the oil filter. Any change in oil pressure must not exceed 2 psi (14 kPa), at a stable (constant) engine speed. *Inlet manifold temperature.**Maximum difference in temperature between inlet air and aftercooler supply water.Fuel System
The fuel supply from the dynamometer test facility to the engine fuel transfer pump, must be at a positive pressure, and not more than 3 PSI (20 kPa). Fuel pressures given in the chart are measured after the final filter and fuel transfer pump. Temperature of fuel when measured at fuel injection pump manifold must be 90°F (32°C). Use a correction factor if fuel temperature difference is more than 10°F (5°C). Specifications given are with the use of CD SAE 10W oil.Location to check lubrication oil pressure must be on the clean side of the oil filter. Use the tapped hole at the top left rear of the cylinder block, or, a tapped hole in the oil manifold, directly behind the oil filter element.At any constant engine speed, engine oil pressure must not fluctuate (change) more than 2 psi (13.8 kPa). Specifications given are with the use of CC or SD SAE 10W-40 or 10W-30 oil.The location to check lubrication oil pressure during the test, is a tapped hole at the rear of the right side cylinder head. The location on the engine to check lubrication oil pressure during the test, is a tapped hole at the left side of the cylinder block. T-Turbocharged.TA-Turbocharged-Aftercooled.JWAC-Jacket Water Aftercooled.A/A-Air-to-Air Aftercooled.The location on the engine to check lubrication oil pressure during the test, is a tapped hole at the left rear side of the cylinder block. PC-Pre-Combustion Chamber.DI-Direct Injection.JWAC-Jacket Water Aftercooled.The location on the engine to check lubrication oil pressure during the test, is the second tapped hole from the rear of the cylinder block in the oil manifold. The location on the engine to check lubrication oil pressure during the test, is at any of the tapped holes in the oil manifold on the left side of the cylinder block.PC-PRe-Combustion chamber.DI- Direct Injection.T-Turbocharged.TA-Turbocharged, Aftercooled.JWAC-Jacket Water Aftercooled. PC-Pre-Combustion Chamber.DI-Direct Injection.T-Turbocharged.TA-Turbocharged, Aftercooled.JWAC-Jacket Water Aftercooled.The location on the engine to check lubrication oil pressure during the test, is any of the tapped holes in the oil manifold on the left side of the cylinder block. DD-Direct Drive.PS-Power Shift.NA-Naturally Aspirated.The location on the engine to check lubrication oil pressure during test, is at the oil filter base, on the clean side of the filter. JWAC-Jacket Water Aftercooled.The location on the engine to check lubrication oil pressure during the test, is a tapped hole at the rear of the last cylinder on the upper left side of the cylinder block. A/A-Air-to-Air T-Balance at 2100 rpm with BHP spread of 132 15hp.V-Balance at 2100 rpm with BHP spread of 65 12hp.W-Specifications are with CD SAE 30 oil.BHP-Brake Horsepower.HP-HorsepowerThe location on the engine to check lubrication oil pressure during test, is a tapped hole at the top of the timing gear cover. F-Difference in manifold pressure from one bank to the other must be 2.00' Hg (68mbar) or less.S-Balance at 2100 rpm with BHP spread of 190 40 hp.W-Specifications are with CD SAE 30 oil. JWAC-Jacket Water Aftercooled.The location on the engine to check lubrication oil pressure during test, is at the oil filter base, on the clean side of the filter.