Great Plains YP4025A Operator Manual - Manual (Page 51)

Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 47
2013-04-24 Table of Contents Index 401-627M
Electric Clutch Operation
The YP4025A Planter has three clutches in the seed
meter drive system. A clutch enables or disables groups
of row units. The information in the table below is
normally preset at the factory for your planter
configuration.
The switches Left / Center / Right correspond to
the left wing row units, center section row units and right
wing row units respectively.
The Master switch controls all row units, regardless of
drive type. For all switches, “OFF” (down) removes power
from the clutch, disengaging that set of row units. When
any switch (plus Master) is ON, the LED for that switch
illuminates steadily.
Clutch Switch Coverage
Electric Clutch Lock-Up
In case of electric clutch failure, an electric clutch can be
mechanically engaged.
Refer to Figure 51 and Figure 52
1.
Remove the rubber plugs from the oil shield
disc to allow access to the lock-up holes. Plugs
simply push out away from the clutch side.
2. Align the cutouts with the holes .
3. Insert the M8-1.25x14mm long metric bolts .
If you observe half the hole obstructed by a metal
disc
, you are not at a cutout.
If the entire hole is obstructed by a metal disc , you
are not at a cutout.
When at a cutout, the bolt will screw in with minimal
resistance until the bolt head reaches the clutch
face.
4. Reinstall the plugs so they are not lost.
Note: Use only the provided 14mm length bolts. Longer
bolts will damage the clutch. Shorter bolts may not
effect a lock-up.
Clutch Switch Coverage (Rows)
Left Center Right
16 row 01-05 06-11 12-16
24 row 01-08 09-18 19-24
31 row 01-10 11-21 22-31
32 row 01-10 11-22 23-32
48 row 01-15 16-33 34-48
Figure 50
CFM: Clutch Switches
26120
1
2 3 4
2 3 4
1
Figure 51
Electric Clutch Lockup
29329
5
1
2
2 3 4
1
2
3 4
Figure 52
Clutch Plate Nearly at Cutout
26168
6
4
3
5
6
6