FUEL REACHING FUEL INJECTORS BUT ENGINE WILL NOT START

TM 10-3930-638-24&P

3-4. FUEL SYSTEM TROUBLESHOOTING (cont)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

11. FUEL DELIVERED FROM TRANSFER PUMP BUT NOT TO FUEL INJECTORS (cont)

Step 15. (cont)

a. If hydraulic head screws are not tight or are missing, tighten and/or install (para 4-3b).

b. If hydraulic head screws are tight and not missing, proceed to step 16.

Step 16. Check if hydraulic head vent wires are missing (para 4-3b; notify general support maintenance).

a. If vent wires are missing, install (para 4-3b).

b. If vent wires are installed, check and replace metering valve spring shim (para 4-3b).

12. FUEL REACHING FUEL INJECTORS BUT ENGINE WILL NOT START

Step 1. Check fuel injection pump timing (para 3-5a(3)).

a. If fuel injection pump timing is not correct, adjust timing as described in paragraph 3-5a(3).

b. If fuel injection pump timing is okay, proceed to step 2.

Step 2. Check throttle arm installation and adjustment (para 2-15i).

a. If throttle arm installation is not correct or if adjustment is not correct, correct installation and

adjust as described in paragraph 2-15i.

b. If throttle arm installation is correct and if adjustment is correct, proceed to step 3.

Step 3. Check governor linkage for proper adjustment (para 4-3b; notify general support maintenance).

a. Adjust governor linkage (para 4-3b).

b. If governor linkage adjustment is okay, proceed to step 4.

Step 4. Check adjustment of torque screw (para 4-3b; notify general support maintenance).

a. If torque screw out of adjustment, adjust (para 4-3b).

b. If torque screw adjustment is okay, proceed to step 5.

Step 5. Disassemble automatic advance components and inspect (para 4-3b; notify general support

maintenance).

a. If automatic advance components are worn or damaged, replace and adjust (para 4-3b).

b. If automatic advance components are okay, proceed to step 6.

Step 6. Check fuel injection pump maximum fuel setting on test set-up (para 4-3b; notify general support

maintenance).

a. If fuel injection pump maximum fuel setting is not correct, adjust (para 4-3b).

b. If fuel injection pump maximum fuel setting is okay, proceed to step 7.