TM 5-3810-306-34
TABLE 3-1. DIRECT AND GENERAL SUPPORT TROUBLESHOOTING (CONTD)
Malfunction
Test or Inspection
Corrective Action
11. EXHAUST SMOKE EXCESSIVE UNDER LOAD
Step 1.
Fuel injection pump timing incorrect.
a. Check fuel injection pump timing. (Refer to page 5-4.)
If OK, do Step 2.
b. Correct fuel injection pump timing.
Step 2.
Air leak between turbocharger and intake or exhaust
manifold.
a. Inspect housing and gaskets for leaks and damage. If
OK, do Step 3.
b. Replace and tighten components.
Step 3.
Defective fuel injector nozzle.
a. Remove and test fuel injectors. (R efer to page 5-2.)
If OK, do Step 4.
b. Replace fuel injector(s).
Step 4.
Defective turbocharger.
a. Remove and inspect turbocharger. (Refer to page 5-10.)
If OK, do Step 5.
b. Replace turbocharger.
Step 5.
Piston rings not sealing.
a. Perform a compression check using STE/ICE, VTM test
No. 14. If OK, do Step 6.
b. Repair engine as required.
Step 6.
Defective fuel injection pump.
a. Replace fuel injection pump. (Refer to page 5-4.)
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