TRACK GP 2960496 - Caterpillar

Connect fuel injection nozzle (16) to the tooling that is shown in Illustration 4.Position the fuel injection nozzle so that the direction of the fuel spray is into 1U-8857 Extension Tube (18) and 8S-2270 Fuel Collector (19) .Note: Wipe the nozzle with a lint free cloth in order to remove any fuel or calibration fluid from the nozzle.
Open the gauge protector valve.
Pump the pressure slightly below the opening pressure of the fuel injection nozzle. Refer to Table 4 for the approximate pump pressure. Release the handle. When the pressure begins to decrease, note the time that is required for the pressure to decrease to approximately 0 kPa (0 psi). If the fuel injection nozzle is not damaged, the time will not be less than 5 seconds or more than 45 seconds.
Table 4
Engine     Pressure    
3044    
11200 kPa (1625.0 psi) (1)
18615 kPa (2700.0 psi) (2)    
3046    
16550 kPa (2400.0 psi)    
3064    
20680 kPa (3000.0 psi)    
3066    
20680 kPa (3000.0 psi)    
( 1 ) Naturally aspirated
( 2 ) TurbochargedIf the time that is required for the pressure to decrease to 0 kPa (0 psi) is less than 5 seconds, too much fuel is leaking around the valve needle. Replace the fuel injection nozzle or replace the nozzle tip.
Illustration 5 g00570047
Leakage test after ten seconds (A) Acceptable (B) Unacceptable
Look for any leakage from the pressure faces of the holder and the retaining nut of the fuel injection nozzle. If leakage is visible, make sure that the components are tightened to the correct torque.If leakage continues to occur, unscrew the retaining nut from the body. Inspect the threaded surfaces for foreign particles and damage. If the faces are clean and undamaged, test the fuel injection nozzle. Repeat Steps 1 through 3.Fuel Injector Nozzle And Seat Test
Ensure that you wear eye protection at all times during testing. When fuel injection nozzles are tested, test fluids travel through the orifices of the nozzle tip with high pressure. Under this amount of pressure, the test fluid can pierce the skin and cause serious injury to the operator. Always keep the tip of the fuel injection nozzle pointed away from the operator and into the fuel collector and extension.
Connect fuel injection nozzle (16) to the tooling that is shown in Illustration 4.Position fuel injection nozzle so that the direction of the fuel spray is into 1U-8857 Extension Tube (18) and 8S-2270 Fuel Collector (19) .Note: Wipe the nozzle with a clean towel in order to remove any fuel or calibration fluid from the nozzle.
Open the gauge protector valve.
Pump the pressure slightly below the opening pressure of the fuel injection nozzle. Refer to Table 4 for the approximate pump pressure. Fuel should not collect on the tip of the fuel injection nozzle in a sufficient quantity in order to drip from the tip for at least ten seconds. A light dampness is acceptable.
If necessary, replace the seat. If necessary, replace the nozzle tip. If