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January 18, 2022 Service bulletin

Altec has learned that on certain derricks built from 2008 to 2020 the diameter of the wire winch rope...

Altec technical service bulletin SIL 841 for 2008-2020 Altec Digger Derrick.

Bulletin number
SIL 841
Component
Equipment: mechanical
Summary
Altec has learned that on certain derricks built from 2008 to 2020 the diameter of the wire winch rope installed may exceed the maximum allowable diameter specified by the ANSI A10.31 derrick standard based on the winch drum diameter. Use of an oversized wire winch rope can lead to improper rope spooling on the winch drum and premature rope wear.

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