Specifications

Instructions 77-9045 Bacharach, Inc. Page 2-13
CD3 AUDIT KIT CUMMINS INJECTORS
j. Tighten the sealing nut while preventing
the Allen screw from moving.
12. Reinstall the discharge head and dummy
injector.
13. Reclamp the injector body to the seat.
14. Start the main drive (push the START MAIN
DRIVE button).
15. Recheck pressure drop as in step 9.
16. If pressure is not within limits, repeat Steps 11
through 15 (except for replacing the sealing nut
on the discharge head).
17. Stop the main drive (push the STOP button).
18. After making pressure drop adjustments,
repeat the “Upstream Leakage Test", Section
2.5.1.
2.5.3 Downstream Leakage Test
Set-up
The set up for the “Downstream Leakage Test" is
the same as described in Section 2.5.2, "Pressure
Drop Test Set-up”.
Test
1. SLOWLY open the test gauge set valve until
the gauge pointer begins to move.
2. Continue to open the valve very slowly. The
pressure will increase until the check valve
pops open, then will abruptly drop.
3. Note the highest pressure achieved (the “crack-
ing" pressure).
4. Close the valve.
5. Slowly open the test gauge set valve until the
pressure is just below the highest pressure
(within about 5 psi) achieved in step 2, above
(that is, before the valve pops open).
6. Close the valve and immediately start stop-
watch. The pressure will slowly drop and
remain at a lower level.
7. Stop the main drive.