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Transmission Does Not Drive With Engine Running
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Low oil level.
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Correct reservoir oil level.
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Park brake engaged.
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Release park brake.
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Misadjusted charge pressure relief valve.
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See your authorized dealer.
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Faulty charge pressure relief valve.
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See your authorized dealer.
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Servo bypass valve faulty.
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See your authorized dealer.
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Control lines blocked.
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See your authorized dealer.
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Pump displacement control valve faulty.
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See your authorized dealer.
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Pump pressure limiter.
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See your authorized dealer.
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Malfunctioning charge pump .
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See your authorized dealer.
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Faulty motor.
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See your authorized dealer.
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Faulty pump.
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See your authorized dealer.
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Transmission Drives In One Direction Only
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Faulty pressure limiter.
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See your authorized dealer.
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Shuttle valve spool stuck.
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Replace flushing valve shuttle spool.
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Faulty control valve.
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See your authorized dealer.
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Faulty pump displacement control valve.
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See your authorized dealer.
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Faulty hydrostatic pump.
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See your authorized dealer.
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Transmission Drives Erratic Or Sluggish
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Service or park brake dragging.
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See your authorized dealer.
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Air in the control lines.
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See your authorized dealer.
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Misadjusted motor pressure override (POR) valve.
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See your authorized dealer.
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| Symptom |
Problem |
Solution |
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Transmission Drives In Wrong Direction
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Control lines from pedal valve switched.
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See your authorized dealer.
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Noisy Transmission Operation
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Low oil level in two-speed gearbox.
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Correct oil level.
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Aerated oil in hydrostatic system.
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Correct oil level.
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Transmission Operates Hot
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Clogged oil cooler.
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Clean oil cooler and check for internal cooler clogging. Repair as necessary.
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Malfunctioning pump pressure limiter.
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See your authorized dealer.
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Misadjusted motor pressure override (POR) valve.
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See your authorized dealer.
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Faulty flushing valve.
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See your authorized dealer.
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Lack Of Power
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Low oil level.
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Add oil to reservoir.
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Malfunctioning charge pressure relief valve.
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See your authorized dealer.
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Pump pressure limiter.
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See your authorized dealer.
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Misadjusted motor pressure override (POR) valve.
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See your authorized dealer.
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Wrong viscosity oil.
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See your authorized dealer.
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Malfunctioning charge pump.
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See your authorized dealer.
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Ground Speed Does Not Increase
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Faulty ground speed limiter switch.
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See your authorized dealer.
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Faulty proportional solenoid valve.
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See your authorized dealer.
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