Specifications

Page 2-10 Bacharach, Inc. Instructions 77-9045
CUMMINS INJECTORS CD3 AUDIT KIT
Three tests need to be performed on the discharge
head:
• Upstream leakage
• Pressure drop
• Downstream leakage
Equipment Required (for All Three Tests)
• Test gauge set
• Dummy injector
• Connecting tubing with quick connects
• Splash shield cup with hose
• Stopwatch
2.5.1 Upstream Leakage Test
Set-up
1. Unclamp the body from the seat, if clamped.
2. Disconnect flowmeter tubing from the top of the
discharge head.
3. Remove the discharge head and set it on the
drain tray.
4. Wipe off any excess fluid from all discharge
head surfaces. Connect the test gauge set to the
high pressure line quick connect (Section 2.4,
step 3). The fitting is located at the pump
driven by the main drive motor shaft.
5. Connect the end of the plastic tubing to the test
gauge set. Insert the other end into the quick
connect of the discharge head.
6. Close the valve on test gauge set (black handle
at a right angle to the flow of fluid in tubing).
7. Push the START MAIN DRIVE button.
Test
8. Slowly open the valve on the test gauge set
until the pressure reaches maximum. It should
be equal to the value found or set in Section 2.4,
Gear Pump Pressure Check.
9. If pressure is below 400 psi:
a. Recheck gear pump pressure (see Section
2.4).
b. Verify that gauge is still calibrated.
Figure 2-15. Upstream Leakage Test Set-up
ÎCLOSE
æVALVE
ËDISCHARGE
æHEAD
ÍTUBING
æ
ÊFLOWMETER
æTUBING