SETUP, CONFIDENCE AND LEAK TESTS
Visually inspect the High Pressure Nitrogen Servicing Cart accessories, indicators and shut-off valves. Refer to the tasks
in Chapter 2 for applicable procedures. Refer to the following paragraphs for the applicable procedures:
BEFORE YOU OPERATE
SETTING THE HIGH PRESSURE RELIEF VALVE
LEAK CHECK AND CONFIDENCE TEST PROCEDURE
Section IV. Troubleshooting
NO NITROGEN FLOW TO HIGH PRESSURE OUTPUT:
NOT REQUIRING BOOSTER PUMP OPERATION
REQUIRING BOOSTER PUMP OPERATION
Possible failures of the High Pressure Nitrogen Servicing Cart as well as probable cause and corrective action are shown
in the following troubleshooting flow charts. Corrective actions, as shown in the following troubleshooting flow charts, are
described in the applicable removal/installation paragraphs in the text of this manual.
In this chapter, troubleshooting flow charts are grouped into two categories. Paragraph 4-11 covers the case of high
pressure operation where booster pump operation is not used and paragraph 4-12 covers troubleshooting for the case
where the booster pump is required for operation. The low pressure operation troubleshooting procedure is described in
Chapter 3 under paragraph 3-11.1 "No Tire Inflation (Low) Pressures".
Paragraph 4-11 is to be used for troubleshooting difficulties associated with no high pressure output appearing at the
High Pressure Output connector, C5 of Figure 1-3, or at the high pressure fitting end of the high pressure charging hose.
Booster pump operation is not required. Paragraph 4-12 is to be used for troubleshooting difficulties associated with
booster pump operation.
See Figures 1-3 and 1-4 for the function and location of the designated components.