Great Plains NTA2007HD Operator Manual - Manual (Page 121)

Great Plains Manufacturing, Inc. Contents Index Maintenance and Lubrication 117
04/04/2011 Contents Index 166-283M
In-Line Filter
If folding/unfolding times slow noticeably, check the in-
line filter and clean if needed. The filter is located at the
inlet port of each pressure valve (page 155).
1. Move drill to typical field conditions. Unfold drill
(page 30). Lower openers (page 36). Turn on fan
(page 58) and bring up to normal field rpm.
2. Set Fan/Fold circuit to Float.
3. Shut down tractor and remove key.
Refer to Figure 104
4.
Slowly loosen filter and relieve any residual pressure
in line. When disconnecting hose, support the end to
minimize fluid loss.
5. To disassemble unscrew end cap of filter. Remove
top retaining washer and screen.
6. Clean filter screen with solvent and compressed air,
or replace if needed.
7. When reassembling put screen into filter. Place
retaining washer on top of filter and screw on end
cap.
8. Re-install filter.
9. Activate the Fan/Fold circuit. Cycle the lift and fold
systems several times. Check for leaks.
10. If there is any sign of air in the system, perform a
bleed operation (page 116).
Null4:
Figure 104
In-Line Filter
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