Great Plains
| 118-949M | 2018-07-03
100
1525P and 1510HDP
Maintenance and Lubrication
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.
Chain Slack
Check slack at fixed idlers within the first 8 hours of
operation and tighten idlers as necessary. Check slack at
spring-operated idlers seasonally.
Refer to Figure 151, 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 inch/91cm):
1
4
inch per foot
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.
Chain Clips
Whenever mounting a chain, make sure the clip at the
removable link is oriented to minimize snags.
Refer to Figure 152 (arrow shows chain direction)
Install clip with open end facing away from direction of
chain travel (shown by gray or striped arrows in chain
routing diagrams).
Meter Drive Chain
For proper operation and to prevent downtime and repair,
keep drive chains properly adjusted and lubricated.
Regularly check drive chains for excess slack and wear.
Adjust idlers to remove any excess slack from chains.
Be sure chain is installed with chain connector link
retainer towards the centerline and the clip opening
(split end) is facing opposite way of chain travel.
Figure 151
Measuring Chain Slack
27264
2
1
Figure 152
Chain Clip Orientation
26482
Figure 153
Meter Drive Chains and Idlers
18266
