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Old 07-10-2018, 12:15 PM
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ol'George ol'George is offline
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Join Date: Oct 2009
Location: MI
Posts: 6,610
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Not familiar with a 1572, but:
If you have a Sundstrand hydro, the seal can be replaced just by removing the driveshaft and coupling/ragjoint assy.
If the bearing behind the seal is worn, it can be removed/replaced by removing
the charge pump (just 2 bolts)---- again accessible from the outside.
Now if the input shaft is bad, the hydro has to come out and apart and it is less expensive to just get a good used hydro.
You are going to have to remove the driveshaft anyway to rebuild it, as you say it is vibrating.
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