KIT-BUSHING 4609937 - Caterpillar

Illustration 2 g02526956
Locations on the low-pressure fuel system on a C6.6 engine (1) Fuel return to the secondary fuel filter (2) Secondary fuel filter base (3) Transfer pump inlet regulator (TPIR) (4) Transfer pump inlet regulator return portTransfer Pump Inlet Regulator (TPIR) Flow Test
For a C4.4 engine, refer to Illustration 1. For a C6.6 engine, refer to Illustration 2.Perform the following procedure:
Disconnect the TPIR return line from the drain port on the TPIR. Install a suitable blanking cap on the open port in the TPIR return line
Connect a temporary drain line to the drain port on the TPIR.
Place the end of the temporary drain line into a suitable calibrated container.
With the keyswitch in the ON position but the engine not running, use a suitable multimeter to measure the input voltage to the EFLP. Record the reading.
With the keyswitch in the ON position but the engine not running, measure the fuel