COVER AS 7J5547 - Caterpillar

Illustration 1. Major components in the Caterpillar Fuel Flow Monitor System.The monitor system can be used as a two-meter system on engines with both supply and return-to-tank fuel lines, or as a single-meter system for engines without the return line. It uses two fuel flowmeters and a hand-held monitor to measure fuel flow and fuel temperature of both supply and return lines, and to calculate the burn rate of the engine. The hand-held monitor also will display average and total fuel burned during a given period of time. The monitor instantly indicates out-of-range conditions such as underflow or overflow. The information can be displayed in S.I. (metric) or U.S. units.
The state-of-the-art "smart" turbine flowmeters contain microprocessors which linearize the output signals of both flow and temperature to give a meter reading accuracy of 0.5%. They also automatically compensate for the expansion of fuel as it changes temperature. The meter groups are all fully field-tested to ensure accuracy. Pulse dampeners, flow straighteners and sight glasses are included.
Either a complete test arrangement with all the parts, or groups of parts from this arrangement can be purchased, depending on the size of engines that are to be tested. See following topics. Operating Manual NEHS0502-01 containing specifications, installation instructions and a list of service parts comes with the arrangements.
The 1U5450 Complete Engine Test Arrangement
This arrangement consists of a complete system to test the 1100, 3200, 3300, 3400, D300, and 3500 Families, and the 3606 and 3608 Engines. See Illustration 2 and Chart A for these parts.
Illustration 2. The complete test arrangement is shown here. Larger engines in the 3600 Family of Engines can be tested using either a single, large meter and recirculating the return fuel (utilizing a fuel cooler if required) or using two large meters in parallel for each fuel line. Contact Caterpillar Service Technology Group for details.
The 1U5440 Engine Fuel Flow Monitor Arrangement For Medium To Large Engines
Use this arrangement to test flow rates on the 3500 Family and 3606 and 3608 Engines, and D300 Families with flow rates above 150 L/hr (40 gph).
Operating range is 150 L/hr (40 gph) to 3785 L/hr (1000 gph). See Illustration 3 and Chart B for these parts.
Illustration 3. Test arrangement for medium to large engines. Larger engines in the 3600 Family can be tested either using a single, large meter and recirculating the return fuel and utilizing a fuel cooler, or using two large meters in parallel for each fuel line. Contact Caterpillar Service Technology Group for details.
The 1U5430 Fuel Flow Monitor Arrangement For Small To Medium Size Engines
Use this arrangement to test D300 (see Note), 1100, 3200, 3300 and 3400 Families Of Engines
The 1U5430 Arrangement can be used on most engines in the D300 Family. Some earlier D300 Family of Engines have flow rates over 265 L/hr (70 gph), and thus require the 1U5440 Arrangement for two-meter operation. If the return fuel flow is blocked as described in Special Instruction SEHS7050 (using the 5P2160 Engine Horsepower Meter), a single 1U5301 Supply