TM 10-4130-237-14
Table 4-2. Unit Troubleshooting (Cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. ENGINE STOPS SUDDENLY (CONT)
Step 2. Test high temperature thermal switch for continuity (para 4-32).
Replace switch (para 4-32).
Step 3. Check for loose or broken compressor drivebelt.
Adjust or replace compressor drivebelt (para 4-14).
Step 4. Test high and low pressure switches and low temperature thermal switch for continuity (para 4-29,4-30,
and 4–33).
If any switch fails test, notify your supervisor.
4. LOW ENGINE SPEED.
Step 1. Check for dirty air filter elements.
Clean or replace air falter elements (para 34, 3-5, or 4-19).
Step 2. Check carburetor adjustment.
Adjust or replace carburetor (para 4-21). If problem not corrected, notify your supervisor.
5. PRODUCT WATER NOT COOL.
Step 1. Check REFRIGERANT SIGHT GLASS for bubbles or milky white liquid.
If bubbles or milky white liquid present, notify your supervisor.
Step 2. Check engine speed (MALFUNCTION 4).
If problem not corrected, notify your supervisor.
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