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How to Complete a PTO Clutch Pressure Test on Your Tractor

We want to help you complete a PTO clutch pressure test on your tractor.

If you do not feel that you understand these steps, or can perform them safely, consult your tractor dealer or local mechanic. Also always consult your tractor owner’s manual for model-specific information.

The purpose of this test is to verify that hydraulic pressure in the Power Take Off (PTO) clutch valve is maintained at the correct levels to perform work without causing damage to the Power Take Off (PTO) clutch.

Time to get started.


1. Remove the rear left wheel.

  • Make sure to use a suitable lifting device.

  • Make sure to support the rear axle with suitable jack stands.

  • Make sure that the range gear lever is in N (neutral) position. (SA324/424 only.)

  • Make sure that the hydraulic pump is in good condition.

2. To complete this task you will need to purchase the following equipment and tools:

  • Adapter fitting (3/8")

  • Hydraulic pressure gauge

  • Hose with coupler

3. Warm up the hydraulic oil.

  • Start the engine.

  • Operate the hydraulic system to circulate and heat up the hydraulic oil.

  • The hydraulic oil must be heated up to the normal operating temperature of 140 °F (60 °C).

  • Check for oil leaks.

  • Shut off the engine.

IMPORTANT: Avoid damage. Do not overheat the hydraulic oil.