Specifications

Page 2-20 Bacharach, Inc. Instructions 77-9045
CUMMINS INJECTORS CD3 AUDIT KIT
Ó
TRIM WEIGHT
Î
LEFT QUICK CONNECT
ÒBUBBLE
INDICATOR
ÑDEAD WEIGHT
TESTOR
ÑDRAIN
HOSE
Figure 2-25. Pressure Regulator Knob
Figure 2-26. Injector Supply Pressure Set-up
17. Remove the load cell assembly and turn off the
clamp force and temperature indicator.
2.9 INJECTOR SUPPLY PRESSURE
The injector inlet pressure of 100 psi (for Cummins
injectors) has the greatest effect on injector output
flow of all test parameters. The higher the inlet
pressure, the higher the injector fuel output.
Equipment Required
Dummy injector
Dead weight tester assembly
Rail pressure gauge adjusting tool
Graduate
Stopwatch
Tubing with quick connect
Hose
Set-up
1. Install the dummy injector.
2. Connect plastic tubing to the dummy injector.
3. Clamp the body to the seat.
4. Clamp the fuel arm on the injector.
5. Turn PRESSURE REGULATOR knob on gauge
panel counterclockwise until it turns freely.
NOTE: Lock nut may require loosening
before knob can be turned.
6. Connect tubing with quick connect from dead
weight tester to the quick connect on the left
side of the dummy injector.
7. Connect flexible tubing to the barbed fitting at
the bottom of the dummy injector and direct it
down the drain hole in the drain pan.
8. Push the START MAIN DRIVE button.
NOTE: Make sure the calibration fluid
temperature shown on the gauge is at 104 °F
±1°F before proceeding.
9. Set the dead weight tester on the drain tray.
10. Level the dead weight tester with the socket-
head capscrews in the base while observing the
bubble level indicator.
11. Remove trim weight from dead weight tester.
ÍPRESSURE REGULATOR KNOB
Ï