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GeneratorsIntermediate 20-60 minutes
Generator coolant leak or overheating
Reported Symptom
Generator coolant leak or overheating
Possible Causes
- 1Radiator hose deteriorated — weeping or cracked
- 2Water pump seal failure
- 3Radiator core fouled — insufficient airflow
- 4Low coolant level from slow leak
Tools Required
- Multimeter
- Non-contact voltage tester
- Insulated screwdriver set
- Nut driver set
- Socket set
- Adjustable wrench
Parts Required
- Motor
- Mounting hardware
- Gasket kit
- Sealant
- Replacement valve or fitting
- Damper assembly
Diagnostic Steps
1
Inspect all coolant hoses for softness, cracking, or weeping at clamps
2
Check water pump weep hole for coolant seepage
3
Inspect radiator fins for dirt or debris blockage
4
Check coolant level at overflow tank when cool
Solution
Recommended Resolution
- Replace degraded hoses on schedule (every 4 years regardless of appearance)
- Replace water pump seal or pump assembly
- Clean radiator fins with low-pressure air or water — do not use pressure washer on fins
- Identify and repair coolant leak before adding coolant