TM 9-2320-272-24-1
Table 2-2. Mechanical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ETHER START SYSTEM
Ether is extremely flammable. Do not perform ether start system
testing procedures near fire. Injury to personnel may result.
16. ENGINE CRANKS BUT WILL NOT START IN COLD WEATHER (FUEL SYSTEM OPERATING PROPERLY)
Step 1. Check ether cylinder.
a. Remove ether cylinder from valve, shake cylinder, and listen for liquid splashing inside
cylinder (para. 3-35).
b. If empty, replace ether cylinder (para. 3-35).
Step 2. Check ether valve for proper operation.
a. Disconnect tubing at ether valve (para. 3-35).
b. Press ether start switch. A small amount of ether should be released at ether valve.
c. If ether is not evident, check electrical system (Electrical Troubleshooting, para. 2-22).
d. If electrical system operates properly, replace ether valve (para. 3-35).
Step 3. Check thermal close valve and thermal close valve tubing for restrictions.
a. Disconnect ether valve to thermal close valve tubing at ether valve. Disconnect thermal
close valve-to-atomizer tubing at thermal close valve.
b. With thermal close valve cold, blow compressed air into tubing at ether valve end to
determine if system is restricted.
c. If restricted, disconnect tubing from thermal close valve and check for restrictions in
tubing.
d. If tubing is not restricted, replace thermal close valve (para. 3-405).
e. If tubing is restricted, replace tubing (para. 3-405).
Step 4. Check atomizer and atomizer tubing for restrictions,
a. Disconnect tubing between thermal close valve and atomizer at thermal close valve.
b. Blow compressed air into tubing at thermal close valve to determine if system is
restricted.
C. If restricted, disconnect tubing from atomizer and check for restrictions in tubing.
d. If tubing is not restricted, replace ether atomizer (para. 3-37 or 3-38).
e. If tubing is restricted, replace tubing (para. 3-39).
END OF TESTING!
EXHAUST SYSTEM
17. EXHAUST COLOR BLUE DURING NORMAL OPERATION
NOTE
Blue exhaust indicates presence of excess engine oil in cylinder
combustion chamber.
Step 1. Check that engine oil grade is correct for vehicle use and climatic conditions
(LO 9-2320-272-121.
If oil grade is incorrect, replace engine oil and oil filter (LO 9-2320-272-12).
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