Great Plains 3PYP Operator Manual - Manual (Page 170)

166 3PYP Table of Contents Index Great Plains Manufacturing, Inc.
401-312M Table of Contents Index 2014-09-09
Lift Bleed: s/n A1006S-
7.
Loosen the JIC fitting at the base end (top) of the
left lift cylinder.
8. Extend the lift circuit until fluid appears at the
loosened fitting. Set control lever to neutral and
secure the fitting.
9. Retract the circuit. Set control lever to neutral.
10. Disconnect both lift cylinder rod ends.
11. Extend the lift circuit until both cylinders are fully
extended.
12. Loosen the JIC fitting at the rod (bottom) end of
the right lift cylinder.
13. Retract the circuit until fluid appears at the loosened
fitting.
14. Set circuit control to neutral and secure fitting.
15. Re-pin rod ends.
16. Unless it is suspected that a large amount of air is in
the line between the cylinders, rely on the normal
re-phasing operation to purge it. Otherwise...
17. Loosen the JIC fitting at the base (top) end of the
right cylinder .
18. Extend lift circuit until fluid appears.
19. Set circuit to neutral and secure fitting.
20. Extend and retract circuit several times.
Bleeding Wing Flex Hydraulics
Refer to Figure 129 and Figure 130
1. Consult appropriate flex circuit hydraulic diagram for
your planter (see Parts Manual).
2. Check that tractor hydraulic reservoir is full. Set
hydraulics for low flow rate.
3. Set circuit to Retract and retract cylinders until they
stop.
4. Set circuit to neutral.
5. Loosen JIC fitting at right cylinder, base end .
6. Set circuit to Extend until fluid appears.
7. Neutralize circuit and secure JIC fitting.
8. Set circuit to Extend until rods extend to stop.
9. Neutralize circuit and loosen JIC fitting at left
cylinder, rod end
:
10. Set circuit to Retract until fluid appears.
11. Neutralize circuit and secure JIC fitting.
12. Extend and retract circuit several times.
Figure 166
Hydraulic Lift Circuit
25385
L
R
1
2 3
4
1
2
3
Figure 167
Wing Flex Cylinders
25422
1
Figure 168
Wing Flex Cylinders
25197
L
R
1
2
2