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 TM 9-2320-285-24-1
2-8.
ENGINE TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5.
EXCESSIVE OIL CONSUMPTION
Step 1.
Check for engine oil leaks at engine oil filter.
a.
If oil leaks are observed, tighten or replace filter element (para 2-12c).
b.
If oil leaks are not observed, go to step 2 below.
Step 2.
Check for engine oil leaks at external oil filter and lines and fittings.
a.
If oil leaks are observed, tighten fittings, plug, and stud (para 2-12d) and replace gasket (para 2-12d); if
hoses are leaking, replace (para 2-12d).
b.
If oil leaks are not observed, go to step 3 below.
Step 3. Check for engine oil leaks at engine oil sampling valve.
a.
If oil leaks are observed, tighten plug or replace engine oil sampling valve (para 2-12f); if hoses are
leaking, replace (para 2-12f).
b.
If oil leaks are not observed, go to step 4 below.
Step 4.
Check for engine oil leaks at oil pan drain plug.
a.
If oil leaks are observed, tighten or replace drain plug (para 2-12b).
b.
If oil leaks are not observed, go to step 5 below.
Step 5.
Check for engine oil leaks at engine oil heater.
a.
If oil leaks are observed, tighten or replace heater (para 2-73d).
b.
If oil leaks are not observed, go to step 6 below.
Step 6.
Check for oil leaks at engine oil pressure sensor and sender units.
a.
If oil leaks are observed, tighten or replace unit (para 2-32a).
b.
If oil leaks are not observed, notify direct support maintenance (refer to TM 9-2815-205-34 for
troubleshooting of the engine and its components).
2-25
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