Great Plains ADC2220 Operator Manual - Manual (Page 100)

96 ADC2220 Table of Contents Index Great Plains Manufacturing, Inc.
167-073M Table of Contents Index 2012-10-17
Chain Maintenance
Inspect and lubricate chains regularly. The slack of new
chains tends to increase during the first few hours of
operation due to seating.
Initially check the drive chains after the first 10 hours of
drill use. Thereafter, check the chains every 100 hours.
Chain Clips
Whenever mounting a chain, make sure the clip at the
removable link is oriented to minimize snags.
Refer to Figure 98
Install clip with open end facing away from direction of
chain travel (shown by gray or striped arrows in chain
routing diagrams).
Chain Slack
Check slack within the first 8 hours of operation and
tighten idlers as necessary.
Refer to Figure 99, which, for clarity, greatly exaggerates
slack, and omits the idlers.
1.
Measure the span for allowable slack:
Locate the longest span of each chain (usually the
span which does not run through the idlers).
2. Determine the ideal slack:
Long chains (over 36 inches / 91 cm):
1 ⁄
4
inch per foot (2.1 cm/m)
Vertical short chains:
1 ⁄
4
inch per foot (2.1 cm/m)
Horizontal short chains:
1 ⁄
2
inch per foot (4.2 cm/m).
3. Measure the current slack :
Acting at a right angle to the chain span at the center
of the span, deflect the chain in both directions. The
slack is the distance of the movement.
4. Adjust the idlers for ideal slack.
Hub Chain
Refer to Figure 100
This double-row chain
connects the hub sprocket
weldment to a sprocket (not visible) on the main drive
shaft
at the right cart wheel. The main drive shaft may
be moved in and out to adjust chain slack.
Check chain tension. Chain should have
1 ⁄
8
inch (3 mm) slack. To adjust, loosen the bolts
holding the main-shaft bearings and slide the main shaft.
Retighten bolts.
Note: If you make any adjustments to the hub chain,
check tension on the clutch input chain from the
main shaft to clutch shaft.
Figure 98
Chain Clip Orientation
26482
Figure 99
Measuring Chain Slack
27264
2
1
1
2
Figure 100
Hub Chain
16219
3 3
2
1
4
1
2
1
3
4