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Diagnose Loose Baler Chain

1:09
7:09
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How to repair a broken chain

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What happens here

Begin by inspecting the John Deere 385 baler to locate the loose chain. The presenter points out a chain that has become very loose and floppy, indicating a loss of tension. This excessive slack prevented the spring-loaded tensioner from functioning correctly and led to entanglement with string. The underlying cause was a broken shear pin, which resulted in the chain stretching or becoming too long for its mechanism.

Goal: The first step involves identifying the specific chain that has become loose on the John Deere 385 baler and understanding why it's lost tension, usually due to a broken shear pin or stretched chain.

Tools and materials

  • John Deere 385 Baler

What they say

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we're in a John Deere 385 baler right here and yesterday my shear pin broke I couldn't tell what the heck was wrong with it walked all around the machine really couldn't see anything upon closer inspection I found that this chain right here that's hanging was loose very very loose and kind of floppy so this is a pile of chain that we're gonna be working on this tensioner this is a tensioner and it holds tension on this chain that's still fairly loose but it doesn't have to be real real tight now this tensioner holds tension on this chain you can see it's spring-loaded right there with the chain connected the way it was connected there is no way I could possibly have any tension and it's flopping and riding right on here so consequently the chain broke and got all hung up in the string and all kinds of stuff but this will all work out it'll all be great let's pull our string back we're gonna take a couple of links out of this one so we can tighten this chain up and put tension back on that spring-loaded part right there now this

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