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 TM 55-1905-223-24-5
Table 2-2. Troubleshooting-CONT
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
STEP 2.
Check turbocharger for oil leaks.
a.
Remove the air intake and air cross-over piping from the turbocharger (para. 2-26).
b.
Examine the compressor intake and discharge for oil. If oil is present, check the axial
motion and radial clearance (Table 2-1, Item 26).
c.
Replace turbocharger (para. 2-26).
STEP 3.
Check for excessive engine crankcase gases (blowby).
NOTE
Excessive blowby indicates a turbocharger or internal engine malfunction. Do not run
engine for more than 10 minutes.
a.
Install a plug in the crankcase breather vent (para. 2-34).
b.
Remove the oil filler cap and replace it with a blowby checking tool.
c.
Connect a pressure manometer to blowby checking tool.
d.
Run engine at 1500 RPM. Pressure manometer reading should be no more than 18.0 in. H20 (45.7
cm H20).
NOTE
Reading should be no more than 12.0 in. H20 (30.5 cm H20) on engines with less than
3600 operating hours.
e.
Check for incorrect oil pressure and any fuel, oil, water, or air leaks.
f.
Replace turbocharger (para. 2-26).
17. Engine cranks but will not start (no smoke from exhaust).
STEP 1.
Check to see if fuel shutoff valve is closed or defective.
a.
Use manual override.
b.
Check solenoid valve and clean terminals as follows:
(1)
Make sure all of the wire connection nuts are tight, whether a wire is attached or not.
(2)
Use a wire brush to clean the corroded solenoid terminals.
(3)
Make sure the shutoff valve solenoid is the correct voltage.
NOTE
The solenoid voltage and a part number are cast into the terminal connection end of the
solenoid.
(4)
Check the voltage (24 Vdc) to the solenoid with a volt-ohm meter. Table 2-2.
Troubleshooting-CONT
2-41
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