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6.
Run the engine in idle approx. 20
seconds while alternately pushing down
the reverse pedal.
7.
Run the engine in idle approx. 10
seconds while alternately pushing down
the forwards pedal.
8.
Fill the hydraulic tank.
9.
Turn the steering wheel repeatedly from
one extreme position to the other until
the steering works without jerks or stops.
10. Close the bypass valve for the front axle.
11. Run the hydraulic cutting unit lift between
its extreme positions repeatedly. Hold the
lever still for 0.5-1 second to ensure that
the hydraulic cylinder reaches its end
position.
12. Close the bypass valves and test drive
the machine.
13. Finally, check the hydrostatic
transmission oil level and fill or drain the
oil tank as needed.
14. Replace the transmission cover.
Bleeding the Hydrostatic and
Hydraulic Systems R 422 Ts
1.
Remove the transmission cover.
IMPORTANT INFORMATION
Ensure cleanliness. Used oil may not be
reused. See "Hydraulic Hygiene" on page 81.
IMPORTANT INFORMATION
The tank must never be run empty while
work is underway. Risk of air penetration
into the system.
2.
Check the oil level in the hydrostatic
transmission. The oil tank may be, in this
position, over filled.
3.
Constantly check the oil level in the
hydrostatic transmission and fill as required.
4.
Start the engine and set the accelerator to
idle.
REPAIR INSTRUCTIONS
Clutch control, rear axle
Hydraulic cutting unit lift
Transmission oil tank
61
English-
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