KIT-RING GEAR 4586094 - Caterpillar

Reference: Special Instruction, SEHS8907, "Using the 1U-5470 Engine Pressure Group"Reference: Operation Manual, NEHS0818, "Using the 198-4240 Digital Pressure Indicator"Fuel System
Refer to the following illustrations in order to identify the fuel system for your application. Locate the pressure testing ports in order to measure the different fuel system pressures.
Illustration 2 g01121520
Fuel filter base and fuel priming pump (1) Fuel filter base (2) Quick connect coupler (3) Fuel priming pump
Illustration 3 g01121527
Fuel filter base that is mounted directly to the fuel manifoldTypical example (2) Test location for unfiltered fuel pressure (4) Test location for filtered fuel pressureMeasuring Unfiltered Fuel Pressure
Fuel leaked or spilled onto hot surfaces or electrical components can cause a fire. Clean up fuel spills immediately.
A high pressure fuel line must be disconnected. To avoid personal injury or fire from fuel spray, the engine must be stopped before the fuel line is disconnected.
Use the following procedure to measure the unfiltered fuel pressure:
Refer to "Fuel System Identification" in order to identify the correct location for measuring the unfiltered fuel pressure. Install Tooling (A) into pressure test location (2) in order to measure the unfiltered fuel pressure.Note: A fuel sensor may be installed in one of the ports that are indicated in the illustrations. If a fuel sensor is installed in the port, install a tee fitting into the port. Install the sensor and Tooling (A) onto this tee prior to operating the engine. Ensure that the tee and all fuel fittings are securely tightened. Failure to tighten all fittings could result in serious fuel leaks.Clean any residual fuel from the engine components.
Start the engine.
Record the pressure reading that is on Tooling (A) for engine speeds of 1800 rpm and 2100 rpm.