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 TM 5-1940-277-20
TM 1940-20/2
Section IV. TROUBLESHOOTING (Continued)
MK1 and MK2 w/SABRE
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
ENGINE FAILS TO CRANK WHEN START SWlTCH ENGAGED - Continued.
Step 7.
Test master switch (refer to paragraph 3-100).
a. Replace defective starter (refer to paragraph 3-121).
Step 8.
Inspect flywheel and ring gear (refer to paragraph 3-130).
a. Report defective flywheel or ring gear to supervisor.
2.
ENGINE CRANKS BUT FAILS TO START.
Step 1.
Check position of engine stop control (refer to paragraph 3-41).
a. Push in fully and insure that stop control cable is not broken and is connected at
the injection pump (refer to paragraph 3-41).
WARNING
Set master switch to "OFF".
No smoking.
NOTE
Whenever fuel system is opened bleed the system of air.
Step 2.
Check for fuel in fuel tank.
a. Refuel if empty.
b. Bleed the fuel system after refueling (refer to paragraph 3-64).
Step 3.
Check position of fuel master shutoff valve (refer to paragraph 3-59).
a. Open master shutoff valve.
b. Replace defective master shutoff valve (refer to paragraph 3-59).
Step 4.
Check position of engine shutoff valve (refer to paragraph 3-58).
a. Open engine shutoff valve.
b. Replace defective engine shutoff valve.
Step 5.
Check fuel hoses and lines for leaks (refer to paragraph 3-57).
a. Tighten leaking connections.
b. Replace defective lines (refer to paragraph 3-57).
Step 6.
Check for air in fuel system (refer to paragraph 3-64).
a. Bleed air (refer to paragraph 3-64).
Step 7.
Inspect fuel filter.
a. Replace defective fuel filter (refer to paragraph 3-62).
Step 8.
Test fuel lift pump.
a. Replace defective fuel lift pump (refer to paragraph 3-63).
2-18
Change 2
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