262 6 PERFORMANCE DIAGNOSTICS
WARNING: To avoid serious personal injury,
possible death or damage to the engine or vehicle
– comply with the following w hen taking oil
sample:
• When routing oil line, do not run the line too
close to moving parts.
• Do not let the line touch hot engine surfaces.
• Oil is hot. Use protective gloves when taking
oil sample. Use caution handling oil sample to
avoid spilling.
WARNING: To avoid serious personal injury
or possible death, do not allow engine fluids to
stay on your skin. Clean your skin and nails
with soap and water, or a good hand cleaner.
Wash or properly throw away clothing or rags
containing engine fluids. Engine fluids contain
certain elements that may be unhealthy for skin
and could even cause cancer.
NOTE: Engine fluids, oil, fuel, and coolant, can be a
threat to the environment. Never dispose of engine
fluids by putting them in the trash, pouring them on the
ground, in the sewers, in streams or bodies of water.
Collect and dispose of engine fluids according to local
regulations.
15. Turn off engine.
Figure 345 Test hose assembly
1. Inline shut-off valve
2. ICP system test adapter
3. Oil sample line
16. Use the ICP system test adapter and inline
shut-off valve to make a test line assembly to
take oil sample.
NOTE: The mechanic is expected to keep the
test line for future diagnostics. Expense the test
line as an essential tool and keep it with other
diagnostic tools. Warranty will not cover the cost
of the test line.
17. Remov e EOT sensor fro m EOT port. Oilwillspill
out. Quickly install test hose assembly.
18. Run engine at high idle for 2 minutes.
19. Return engine to low idle, take oil sample, and
check for aerated oil.
• If oil is aerated, a large quantity of air bubbles
mixed throughout the oil, or foam build up on
top of the oil will be seen. Check for cracked
oil pickup tube or a missing or faulty pickup
tube gasket.
• If oil is not aerated, disconnect ICP sensor
and check engine stability. If proble m is
corrected, see “ICP Operational Volta g e
Checks” in Section 7.
• If ICP is still h igh or unstable , replace I PR
following procedures in Engine Service
Manual and retest.
EGES-270-1
Read all safety instructions in the "Safety Information" section of this manual before doing any proced ures.
Follow all warnings, cautions, and notes.
©August 2008 Navistar, Inc.
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