Cleaning and Checking

- Clean all parts with solvent and blow them dry with compressed air. Pay particular attention to filters and oil passages.

- Make sure the orifice in the channel between the relief and control valve is open. If compressed air is not enough, use a pointed wooden stick. Hard objects must not be used, since this can alter the bore of the channel.

- Make sure the groove inside the ring gear on the output shaft is properly cleaned. Dirt easily collects there due to the centrifugal force.

- After cleaning, check all parts carefully for wear, cracks or other damages.

- Use a 12-Volt battery to check the solenoid. The current draw should be 1.5-2.0 Volts. Check valve movement when engaging/disengaging.

- Make sure filter and strainer are not damaged. Check the hydraulic system pistons for wear and abrasion.

- Check the valves for wear. Make sure the springs are not damaged.

- Check all gears and ball bearings for wear.

- If a planetary gear has to be replaced, the other two must also be replaced at the same time. Otherwise the planetary gear assembly may cause noise.

- For the same reason, both needle bearings for a planetary gear should be replaced at the same time.

- Check the brake drum for scoring. cracks and wear.

- Check the clutch disc linings for wear and heat deformations.