GREAT PLAINS YP1225A, Руководство пользователя

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Great Plains | 401-625B | 6/19/19 14
YP1225A and YP1625A Table of Contents Index Sprocket Indexing (Stagger)
4. Use drive shaft to set front row unit to index 1.
Observe the meter drive sprocket at a front (short
mount) row unit on each wing. Use the wrench, from
the rear of the shaft, to rotate the shaft forward
(wrench up and forward).
Stop rotation with tip of tooth stamped “1” (1) aligned
with a rib (2) cast into the meter housing. In general,
the rib at the 2:00 position is the easiest to use, as it
is visible from the side and from behind the meter.
 NOTE:
The illustration shows tooth 1 slightly ahead of the index
rib at 2:00.
5. Check front sprocket synchronization.
Inspect all meter drive sprockets on front row units.
Check that all springs are taut, and no chains have
slack. All sprockets should be at “1”. If not, use
step 6 through step 10 to set them to 1. Although
front sprockets machine-wide may be at 1 after this
check, sprockets do not remain in sync wing-to-wing,
due to clutch operation.
When equipped with swath control clutches the front
sprockets will not be synchronized. When swath
control clutches are in place each front sprocket
must be checked when timing its mating rear
sprocket. The front row can be advanced by
manually turning the tandem sprocket forward until
the front sprocket is at 1. Then set the rear sprocket.
Check that the front sprocket has not moved.
Equipment Damage Risk:
Do not apply significant force to meter disk, or drive hub may
be damaged.
 NOTE:
In the future, finding front sprockets out of sync on a wing
suggests idler/spring problems, and/or worn chain. Row
drive systems must be in reliable working order for
effective sprocket indexing.
6. At the rear (long mount) row unit of each pair, note
which sprocket tooth is at the index mark (2). If the
sprocket is already at the chart value, skip to
step 12. Otherwise, complete step 7 through step 10
for that row.
7. Place the timing tool (3) over the meter shaft. Attach
a
3
/
8
inch socket wrench to aid in rotation.
Sweep the tool tooth under the chain, rotating in the
direction opposite of that desired for sprocket
adjustment.
•
Each clockwise rotation of the timing tool
advances the sprocket by one tooth.
• Each counter-clockwise rotation of the timing
tool retards the sprocket by one tooth.
If the timing tool is not available, remove the idler
tensioning spring to adjust the sprocket position.
Rotate meter shaft backward (if meter empty,
otherwise forward one full rotation), and re-check
indexing with normal tension on chain.
8. Advance or retard the sprocket until the desired
tooth number is at the index mark. Hold the sprocket
stationary, and re-mount the chain, making sure the
chain is taut in the top loop.
9. Rotate meter shaft backward, or rotate wing drive
shaft forward to tension chain. Re-check that front
row sprocket is still at “1”.
1
2
29630
2
29628
3
31444