Great Plains EWD13 4109R+ Operator Manual - Manual (Page 16)

4/3/95 2-4
175-083M-A
BLEEDING OPENER LIFT HYDRAULICS
This End Wheel Drill requires the use of a 3 1/2" bore x 8"
stroke cylinder with a 20 1/4" {pin to pin} retracted length.
NOTE: Check the hydraulic fluid level in the tractor reser-
voir and fill to the proper level. If the bleeding is performed
with a low tractor reservoir supply, there is a chance of
drawing air into the system. The system capacity is ap-
proximately 1/2 gallon and requires 1 pair of remote out-
lets.
1. With the transport lock in the transport position, refer to
"Operating Transport Lock" on page 3-1. Loosen the
connection between the hose end and the cylinder base
end fitting.
2. With the tractor at idle, slowly retract the lift cylinder.
When the air is expelled and oil starts flowing out, tight-
en the base end hose connection.
3. Repeat this procedure with the rod end hose con-
nection while extending the cylinder.
4. Recheck the tractor reservoir level and add clean flu-
id as necessary.
5. It is advisable to extend and retract the lift cylinder
several times. The majority of air should now be ex-
pelled from the system. Any remaining air will gradually
be pushed to the tractor during day to day operations.