Navistar International DT 466 Diagnostic/Troubleshooting Manual page 129

Figure 144 Diagnostic coupling
1. Valve
2. Center section
NOTE: Engines are equipped with a fuel pressure
test valve in the form of either a Shrader valve or a
diagnostic coupling.
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
4 ENGINE SYMPTOMS DIAGNOSTICS
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
Figure 145 Fuel Pressure Gauge
1. Quick disconnect check valve
2. Fuel test line
3. Fuel Pressure Gauge
4. Inline shut-off valve
5. Clear test line
Figure 146 Fuel Pressure Test Adapter
NOTE: If the engine is equipped with a Shrader valve,
use the Fuel Pressure Test Adapter.
125