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Originally Posted by FISHTIGUA Just today we have done a first big service on a pair of 3516's on a production boat, mostly nice but some service parts have changed already. One impeller broke-up after only 1500hrs so little bits of rubber went through the coolers. This boat is popping off to Norway in a couple of days but the owner/operator says its not worth pulling the inters, good call, huh?  |
I have never seen a rubber raw water pump impellor that was rated to go over 500 hours. I wouldn't think that the service manual recommends putting 1500 hours on the raw water pump impellors without changing them.