Transmission

Symptom Problem Solution

Transmission Does Not Drive With Engine Running

Low oil level.

Correct reservoir oil level.

Park brake engaged.

Release park brake.

Misadjusted charge pressure relief valve.

See your authorized dealer.

Faulty charge pressure relief valve.

See your authorized dealer.

Servo bypass valve faulty.

See your authorized dealer.

Control lines blocked.

See your authorized dealer.

Pump displacement control valve faulty.

See your authorized dealer.

Pump pressure limiter.

See your authorized dealer.

Malfunctioning charge pump .

See your authorized dealer.

Faulty motor.

See your authorized dealer.

Faulty pump.

See your authorized dealer.

Transmission Drives In One Direction Only

Faulty pressure limiter.

See your authorized dealer.

Shuttle valve spool stuck.

Replace flushing valve shuttle spool.

Faulty control valve.

See your authorized dealer.

Faulty pump displacement control valve.

See your authorized dealer.

Faulty hydrostatic pump.

See your authorized dealer.

Transmission Drives Erratic Or Sluggish

Service or park brake dragging.

See your authorized dealer.

Air in the control lines.

See your authorized dealer.

Misadjusted motor pressure override (POR) valve.

See your authorized dealer.

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Symptom Problem Solution

Transmission Drives In Wrong Direction

Control lines from pedal valve switched.

See your authorized dealer.

Noisy Transmission Operation

Low oil level in two-speed gearbox.

Correct oil level.

Aerated oil in hydrostatic system.

Correct oil level.

Transmission Operates Hot

Clogged oil cooler.

Clean oil cooler and check for internal cooler clogging. Repair as necessary.

Malfunctioning pump pressure limiter.

See your authorized dealer.

Misadjusted motor pressure override (POR) valve.

See your authorized dealer.

Faulty flushing valve.

See your authorized dealer.

Lack Of Power

Low oil level.

Add oil to reservoir.

Malfunctioning charge pressure relief valve.

See your authorized dealer.

Pump pressure limiter.

See your authorized dealer.

Misadjusted motor pressure override (POR) valve.

See your authorized dealer.

Wrong viscosity oil.

See your authorized dealer.

Malfunctioning charge pump.

See your authorized dealer.

Ground Speed Does Not Increase

Faulty ground speed limiter switch.

See your authorized dealer.

Faulty proportional solenoid valve.

See your authorized dealer.

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