TM 5-2420-230-10
Table 3-4. Troubleshooting Table. (Continued)
Malfunction
Test or Inspection
Corrective Action
4.
ENGINE EMITS EXCESSIVE BLACK OR GREY EXHAUST SMOKE.
Step 1.
Check air filter restriction indicator (1).
If indicator (1) reads more than 25 inH2O (625 mmH2O), notify Unit maintenance.
Step 2.
Check for air leak between turbo (3) and manifold (4).
If leak is detected, notify Unit maintenance.
If no leak is detected, notify Unit maintenance.
Change 1