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TM 5-4210-220-12
Table 4-2 UNIT TROUBLESHOOTING - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
13g OIL OR FUMES SEEN AT ROAD DRAFT TUBE
Step 1. Check engine breather.
Clean or replace breather.
Step 2. Check exhaust and muffler.
Remove blockage or replace system, (see para. 4-21).
13h EXHAUST SMOKE - BLACK
Step 1. Recheck engine when at operating temperature.
Allow engine to reach operating temperature.
Step 2. Check fuel grade.
Drain and refill tank with correct fuel.
Step 3. Check exhaust for restriction.
Remove restriction or replace exhaust, (see para. 4-21).
Step 4. Check air filter.
Replace if clogged, (see para. 4-23).
13j HIGH LUBRICATING OIL CONSUMPTION
Step 1. Check external oil lines or connections for leaks.
Tighten/remake connections or replace hoses, (air compressor, turbocharger).
Step 2. Check crankcase oil level.
Drain oil from crankcase if overfilled.
Step 3. Check crankcase breathers.
Clean/replace as required, (see para. 4-21).
Step 4. Check air cleaner.
Replace if blocked, (see para. 4-28).
4-54
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