34
Troubleshooting, Adjustment, & Service
HYDRO TRANSMISSION PURGING
Purge the transmission if the unit lacks drive in forward
or reverse, or if the unit is excessively noisy
1. See Figure 43. Block the front wheels. Elevate the
rear end of the tractor using a chain hoist or floor
jack. Support the rear of the unit using jackstands.
Elevate the unit just high enough for the rear wheels
to clear the ground.
2. Activate the seat switch (A, Figure 43), depress the
clutch / brake pedal (B, Figure 44), and start the
engine. After the engine has started, set throttle (A)
to IDLE.
3. Release the clutch / brake pedal (B) and move the
ground speed lever (C) fully forward.
4. While holding the ground speed control in forward
position, engage and disengage the transmission
release valve lever (Figure 45) several times.
5. Move the ground speed lever (C, Figure 44) to full
reverse.
6. While holding the ground speed control in reverse,
engage and disengage the transmission release
valve lever (Figure 45) several times.
7. Engage the transmission release valve lever (Figure
45) and move the ground speed lever (C, Figure 44)
from full forward to full reverse several times.
8. Lower the tractor and test run for several minutes.
Figure 45. Release Lever - Hydro Models
Release Lever
Figure 43. Elevate the Rear End of the Tractor
A. Seat Switch
Figure 44. Controls
A. Throttle C. Ground Speed Lever
B. Clutch / Brake Pedal
A
B
A
C