TM 10-4320-344-24
Table 2-4.
Unit Troubleshooting Table.
(Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. ENGINE CRANKS, BUT WILL NOT START. (Continued)
Step 5.
Disconnect outlet line on fuel transfer pump.
Using manual pumping
l e v e r, check to see if enough fuel is being pumped.
If not enough fuel is being pumped, replace fuel transfer pump (paragraph
2 .2 1 . 6 ).
Step 6.
a.
b .
Step 7.
a.
b .
Step 8.
Disconnect diode on fuel solenoid coil.
Using multimeter, set to 200
ohm scale, check reading across fuel solenoid coil.
(Model 609-A and
Model 609-C)
If reading is between 5 and 6 ohms, go to step 7.
If reading is not between 5 and 6 ohms, notify direct support
maintenance for Model 609-A.
For Model 609-C, replace fuel solenoid
(paragraph 2.21.3).
Test fuel injection nozzles.
Test fuel injection nozzles (paragraph 2.21.8 or 2.21.9).
Replace fuel injection nozzles (paragraph 2.21.8 or 2.21.9).
Check to see if pressure regulating valve is set correctly.
(Model
609-A)
Notify direct support maintenance.
3. ENGINE STOPS SUDDENLY.
Step 1.
See wiring diagram (Appendix F).
Check to see if any of the
positive poles are grounded.
Correct wiring.
Step 2.
Step 3.
a.
Step 4.
a.
b.
c .
Step 5.
Inspect for loose, dirty, or damaged wires.
Clean and tighten loose or dirty wire connections.
Repair or replace damaged wires or wiring harness (paragraph 2.17).
Inspect exhaust system for damage or restriction.
Replace damaged component(s) (paragraph 2.13).
Check engine warning lights.
(Model 609-C)
If LOW OIL light is on go to step 14.
If HIGH temperature light is on go to step 15.
If overspeed light is on notify direct support maintenance.
Inspect for loose or broken V-belts.
(Models 609-C and US636HCCD-1)
Tighten or replace V-belts as required (paragraph 2.21.12).
Step 6.
Test V-belt contact switch (paragraph 2.21.19).
Replace defective V-belt contact switch (paragraph 2.21.19).
2-32
a .
b .
