TM 9-4310-394-13
5-5.
INTRODUCTION. Continued.
Refer to Table 5-1 to locate problematic symptoms, corrective action steps to isolate a faulty component, and references
to provide corrective maintenance. The following paragraphs briefly explain the different headings of Table 5-1.
a.
Malfunction. This is a sequential listing of problematic symptoms. The malfunction number is used for cross
reference purposes and to avoid needless repetition.
b.
Test or Inspection. This suggests further test or inspection checks to localize the symptom cause to a more
specific area. It allows corrective action flexibility depending on the outcome of these checks.
c.
Corrective Action. This lists the corrective action or actions to be taken and the paragraph reference to locate
the step-by-step maintenance procedures to fix the fault.
Table 5-1. Direct Support Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
ENGINE WILL NOT START.
Step 1.
Check fuel injection pump.
Check that fuel injection pump pumps fuel. Align/replace fuel injection pump.
(Refer to para 5-8.)
Step 2.
Check fuel injection nozzle.
Check that fuel injection nozzle is operating properly. Replace fuel injection nozzle.
(Refer to para 5-7.)
2. DROP IN ENGINE ROTATION SPEED.
Step 1.
Check exhaust smoke color (refer to Table 4-2).
Refer to likely cause and perform repairs or adjustment as indicating in Table 4-2.
Step 2.
Check for faulty fuel injection valve.
Check that injector spray pattern is correct and that fuel injector valve is
functioning properly (see paragraph 5-7).
If fuel injector valve is defective, replace it.
5-2
