no do not try this your self, you have to take it to a Caterpillar dealer with a cylinder shop the return spring can be dangerous.
just kidding since you posted 2 different places, I figured to give you 2 different answers.
truth is it is a pretty straight forward you just get the weight off the chains by blocking up the carriage, take the cross head off, and unscrew the gland nut. there is no "return spring".
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