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Blower not keeping dust out of operator enclosure
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Defective seal around filter element
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Check seal condition
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Check filter for correct installation
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Defective filter
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Replace filter
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Excessive air leak
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Seal air leaks
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Blower air flow too low
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See Blower Air Flow Too Low
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Blower air flow too low
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Clogged filter or air intake screen
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Clean
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Heater core or evaporator core clogged
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Clean
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Heater will not shut off
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Heater hoses connected incorrectly
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See your John Deere Dealer
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Air conditioner not cooling
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Low voltage
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Check charging circuit. (See Servicing Air Conditioner in Service Section)
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Low refrigerant
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Check sight glass. (See Servicing Air Conditioner in Service Section)
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Belt slipping
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Check belt tension
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Heater on
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Turn heater to off position.
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Compressor stuck
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Rock compressor pulley back and forth
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Intermittent coolant
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Air restriction
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Clean side screens, radiator and oil cooler condenser. (See Servicing Air Conditioner in Service Section)
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Water leaking from under seat
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Plugged air conditioning condensate drain hoses
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Clean drain hoses
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Heater hoses leaking
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Replace heater hoses
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Seat suspension sticking
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Foreign objects under seat
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Keep area under seat completely clear
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