TM 10-4320-226-14
Table 4-2. unit Troubleshooting Table. (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
ENGINE WILL NOT CRANK. (continued)
Step 6.
Connect multimeter between small terminal of starter solenoid and
ground. Set multimeter to read +12 Vdc.
Press Push to start
button and push for oil pressure bypass then observe multimeter
for +12 Vdc.
a.
If +12 Vdc is present, replace starter (paragraph 4.10.13)
b.
If +12 Vdc is not present, replace or repair wire from TB1 12 to
small terminal on solenoid.
Step 7.
Test control panel (4.13).
a. Repair panel as necessary.
b. Notify direct support maintenance.
2.
ENGINE WILL NOT START.
Step 1.
Check for correct installation of each fuel shut-off valve handle.
Do not fill fuel tank on equipment that is operating. Do not smoke or use open
flames while filling tank. Avoid inhalation of fumes from fuel.
Failure to
obey this warning may result in personal injury or death.
a. Remove and retain plug or elbow from valve.
b.
Using a flashlight, observe valve passages while rotating handle.
c.
Ensure valve handle pointer positions and valve internal passages
agree with decal.
d.
Remove and align handle in accordance with information plate.
e.
Install plug or elbow retained in step a on valve.
Step 2.
Test fuel shutdown solenoid (paragraph 4.10.14).
Replace or adjust fuel shutdown solenoid as necessary
(paragraph 4.10.15).
Step 3.
Check for blocked strainer in fuel feed pump (paragraph 4.10.17).
Clean or replace strainer as necessary.
Step 4.
Check for air or blockage in fuel lines (paragraph 4.10.16).
a. Clean or replace fuel lines.
b.
Bleed fuel lines.
c.
Notify direct support maintenance.
3.
ENGINE SPEED DOES NOT ADJUST.
Step 1.
Check for bent, broken, or damaged control arm.
Replace throttle control (paragraph 4.11).
4-8
