Great Plains ADC1150 Operator Manual - Manual (Page 65)

63
Section 4 Adjustments
7/28/10 Model 1150 1995 - 1997 167-058M
Great Plains Mfg., Inc.
Chain from Gearbox Output to Jackshaft
Refer to Figure 4-22:
1.
Check the tension. The chain should have 1/2” slack
at the midpoint.
2. If adjustment is needed, loosen the bolts holding the
jackshaft bearings and move the jackshaft to adjust.
Be sure to move both bearings together and keep the
shaft level with the drill. Re-tighten the bolts. It may be
necessary to adjust the chain from the jackshaft to the
meter.
Chain from Jackshaft to Meter
1.
First, check the tension on the chain from gearbox out-
put to jackshaft and adjust as needed.
2. Check the tension. The chain should have 1 3/8” slack
at the midpoint of the lower span, refer to Figure 4-23.
3. If adjustment is needed, loosen the bolts holding the
idler sprocket and move in slot to adjust. Re-tighten
the bolts.
Electric Clutch Height Switch
!
WARNING!
Do not place any part of body under implement while making
adjustments.
Height switch is at center, front of implement.
Lower the implement until it is at a height where you want
seeding to start (usually just above the ground).
Turn off the tractor and remove the key.
Loosen the cam clamp on the rockshaft and turn until the
roller is just starting to make contact with the ramp surface,
refer to Figure 4-24.
Tighten the clamp securely.
Gearbox to Jackshaft Tension
Figure 4-22
14545
14547
Jackshaft to Meter Tension
Figure 4-23
Height Switch Adjustment
Figure 4-24
14549