Great Plains ADC2220 Operator Manual - Manual (Page 101)

Great Plains Manufacturing, Inc. Table of Contents Index Maintenance and Lubrication 97
2012-10-17 Table of Contents Index 167-073M
Clutch Input Chain
Refer to Figure 100 (page 96) and Figure 101
This chain
connects a driving sprocket on the main
drive shaft below to a driven sprocket on the clutch
jackshaft above the meter gearboxes.
Check that both sprockets are aligned (in the same
plane, with the chain making a flat oval). If not, loosen
the set screws holding the lower driving sprocket (
in
Figure 101) and move drive sprocket until they are
aligned. Re-tighten the set screws.
Check chain tension. Rear span should have
1 ⁄
2
inch (13 mm) slack at the midpoint. To adjust, loosen
bolts holding the clutch-shaft bearings slide the clutch
shaft up or down. Keep the clutch shaft parallel with the
main shaft and perpendicular to frame. Retighten bolts.
Refer to Figure 102
If you move the clutch shaft, check the electric clutch
anti-rotation tang
and stop bolt. The tang must fit
loosely over the stop bolt. If necessary, move the stop
bolt in its slot to ensure a loose fit or to get greater chain
adjustment.
To ensure long clutch life, it is very important that the bolt is
not tight against either end of the slot in the clutch tang.
Population Risk:
Do not spray chain lubricant directly on the clutch. If lubricant
gets inside the clutch, it can slip, resulting in low or erratic
seed rates.
Clutch Output Chains
Refer to Figure 103
Check the tension. Chain should have
1 to 1
7 ⁄
8
inch (2.5 to 4.8 cm) slack at the midpoint.
To adjust, loosen the bolts holding the idler sprockets
and move the sprockets. Retighten bolts.
Figure 101
Clutch Input Chain, Upper
16144
6
5
7
4
7
4
5
6
2
7
Figure 102
Clutch Anti-Rotation Tang/Stop Bolt
16145
8
7
Figure 103
Clutch Output Chain
16146