Acura Repair Questions? Ask a Mechanic for Answers ASAP
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the service bulletin is to replace the o-ring at the inlet joint for the steering pump. it helps correct a moan or whine issue from the pump.the bulletin has been around since at least 2004. it is a very common issue. what happens is it allows air to enter through the o-ring and causes the fluid to form air pockets which creates the moan/whine issue.
whenever you have a power steering pump noise on almost any v6 acura this is the first thing to look at. majority of the time this is the issue and the o-ring is a very cheap part.