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Sundstrand Hydro Noise

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You know that "different noise" that a Sunstrand 15 hydro makes in reverse? Not saying it is a bad noise - just a different noise.

Well, my mid 1990's Agco Allis 918H has started making that same reverse noise - WHILE TRAVELLING FORWARD, and makes the former forward noise WHILE IN REVERSE. I am not imagining this, my son (with better hearing than me) compared the Agco in forward to the Sovereign in reverse - and they sound exactly the same.

This all started when I pulled it out of the shed this spring. I have no idea what it means, or if it means anything at all.

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Was raising the mower deck and just popped a hydraulic hose. Pulled the deck and it is the Lift Hose attached to the bottom of the hydraulic cylinder. COINCIDENCE ?? or a symptom of a problem with the pump when combined with the noise issue in the first post??

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Unless someone has monkeyed with the relief valve setting the hose is likely just a freak thing.

As for the hydro, a good servicing and filter change should restore the hydro to normal sounds. Use a Wix or OEM filter only. Under no terms should you use a Fram on the hydro...

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