ARMY TM 9-6115-641-24
AIR FORCE TO 35C2-3-456-12
Table 3-1. DIRECT SUPPORT TROUBLESHOOTING - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. ENGINE MISFIRING.
Step 1. Test for defective fuel injection nozzle(s), refer to TM 9-2815-252-24.
a. If fuel injection nozzle(s) is not defective, do Step 2.
b. If defective, repair or replace fuel injection nozzle(s), refer to TM 9-2815-252-24.
Step 2. Check for incorrect timing on fuel injection pump(s), refer to TM 9-2815-252-24.
a. If fuel injection pump(s) timing is correct, do Step 3.
b. If not timed correctly, time fuel injection pump(s), refer to TM 9-2815-252-24.
Step 3. Check for defective fuel injection pump(s), refer to TM 9-2815-252-24.
a. If fuel injection pump(s) is not defective, do Step 4.
b. If defective, repair or replace fuel injection pump(s), refer to TM 9-2815-252-24.
Step 4. Check for weak valve springs, refer to TM 9-2815-252-24.
a. If valve springs are serviceable, do Step 5.
b. If defective, replace valve springs, refer to TM 9-2815-252-24.
Step 5. Check for valves stuck or burnt, refer to TM 9-2815-252-24.
a If valves not struck or burnt, do Step 6.
b. If defective, replace valves, refer to TM 9-2815-252-24.
Step 6. Check for low engine vacuum, refer to TM 9-2815-252-24.
If engine vacuum is too low, repair or replace engine, refer to TM 9-2815-252-24.
4.
ENGINE DOES NOT DEVELOP FULL POWER.
Step 1. Test for defective fuel injection nozzle(s), refer to TM 9-2815-252-24.
a. If fuel injection nozzle(s) is not defective, do Step 2.
b. If defective, repair or replace fuel injection nozzle(s), refer to TM 9-2815-252-24.
Step 2. Check for incorrect timing on fuel injection pump(s), refer to TM 9-2815-252-24.
a. If fuel injection pump(s) timing is correct, do Step 3.
b. If not timed correctly, time fuel injection pump(s), refer to TM 9-2815-252-24.
Step 3. Check for weak valve springs, refer to TM 9-2815-252-24.
a. If valve springs are serviceable, do Step 4.
b. If defective, replace valve springs, refer to TM 9-2815-252-24.
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