61
61-9
TROUBLESHOOTING
Air dryer
Symptoms
Deposits come out of drain cock of air tank
No deposits come out of exhaust port
Freezing takes place within air dryer
Air pressure in air tank decreases markedly
Engine oil leaks from exhaust port
Reference
Gr
Possible causes
Deterioration of desiccating agent O
Inoperative heater causing air dryer to freeze O
Malfunctioning of valve due to adherence of foreign particles O
Heater circuit open and therefore no heat retention O
Heater malfunction due to thermostat malfunction O
Extreme lowering of temperature of air dryer main body due to ad-
herence of snow/ice
O
Heater malfunction due to disconnection with thermostat O
Dry air in air tank flows out in reverse when check valve of air dryer
fails to function as a non-return valve
O
Rising of oil level in air compressor O
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