Kelly W36, Operating Instructions Manual

Page: 28 / 46

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Set chain tension
Wing Tension Travel
It is important that the amount of wing extension be monitored throughout the life of the chain.
Optimal outer wing extension should be between 600mm and 800mm. Fullly retracted or extended will
require chain adjustment.
Fig 23.
Fully Retracted Mid-Way
If the cylinder is fully retracted you may need more discs.
If the cylinder is fully extended it will be necessary to remove a disc from each front and rear chain
set.
If the machine has been used for a period of time, the chain is worn down and the cylinder is fully
extended you will need to remove disc/s from each front and rear chain set.
Fully Extended
rrect chain tension will ensure that the entire length of discs will roll as one. This minimises the
movement between each link. If a chain is not adjusted and runs loose, each link acts as a
universal joint as the curved chain rolls along and the wear rate between each link is greatly
accelerated and can lead to premature failure. The chain links should not wear out before the discs are
worn down.
ONLY POOR ADJUSTMENT CAUSES THIS.
• The chain may sag not more than 150mm from centre line when working
• At rest there should be less than 100mm of sag in the chain.