Bleeding The Hydrostatic And Hydraulic Systems Pr 17 Awd, Pf 21 Awd - Husqvarna Rider PR 17 Workshop Manual

Bleeding the Hydrostatic and
Hydraulic Systems
PR 17 AWD, PF 21 AWD
1. Remove the transmission cover.
IMPORTANT INFORMATION
Ensure cleanliness. Used oil may not be
reused. See "Hydraulic Hygiene" on page 105.
IMPORTANT INFORMATION
The tank must never be run empty while
work is underway. Risk of air entering
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
needed.
4. Start the engine and set the accelerator
to idle.
5. Set the bypass valve for the front axle to
open position with the clutch control
pulled out.
Set the bypass valve for the rear axle to
closed position with the clutch control
pushed in.
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.
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English-
REPAIR INSTRUCTIONS
Transmission cover
Clutch control, front axle
Clutch control, rear axle
Hydraulic cutting unit lift