TM 5-3805-261-20
Section VII. COOLING SYSTEM TROUBLESHOOTING.
6-33.
GENERAL INFORMATION. This section lists the common cooling system malfunctions which may occur during
the operation of the 130G Grader. You should perform the tests, inspections and corrective actions in the order listed.
Follow the troubleshooting procedures listed below step-by-step until you can go no further.
6-34.
COOLING SYSTEM TROUBLESHOOTING PROCEDURES. This section cannot list all possible malfunctions,
nor can it list all possible tests, inspections or corrective actions. If a malfunction is not listed, contact your supervisor.
COOLING SYSTEM TROUBLESHOOTING AND MAINTENANCE PROCEDURES.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
a.
ENGINE OVERHEATS.
Step 1. Check for debris blocking radiator grille.
Refer to TM 5-3805-261-10.
Step 2. Check the coolant level of the cooling system.
Refer to TM 5-3805-261-10.
Step 3. Check for restrictions to air flow. Inspect fan blades, fan shields, baffles and plates.
Replace damaged or missing parts. Refer to paragraphs 6-37 and 6-46.
Step 4. Check for loss of pressure.
Tighten radiator cap. Replace radiator cap if necessary. Refer to paragraph 6-48.
Step 5. Inspect and test temperature regulator. Refer to paragraph 6-42.
Replace temperature regulator if necessary. Refer to paragraph 6-42.
Step 6. Check coolant pump operation.
Replace pump if necessary. Refer to paragraph 6-43.
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