missnmountains
Active Member
Yes. They are working on them over the next two weeks. I am not looking forward to the 1000 hour service.
Ken
Ken
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Read this. This guy knows what he is doing. http://www.unlimitedyachtservices.com/aftercooler_and_cooling_system__service_lesson.pdf
That is odd. There are definitely regional variations in labor charges. This publication may be a couple of years old. It seems that labor costs have skyrocketed in the last 5-10 years.Why is their price $3k and I was quoted almost double? Granted my quote also included valve adjustment.
Thought I'd follow up on this post with my experience. I bought my 6CTA Cummins boat in November/2013 with 1025 hours and 13 years old. Been spending the offseason getting all the loose ends completed and getting a full maintenance cycle on the engines. During the aftercooler removal/cleaning we found excessive corrosion in the port aftercooler with no evidence it had ever been removed/cleaned in its 12 years. Cummins mechanic figured it came from condensation of moisture from the warm air collecting at the bottom of the cooler, and not being drained over time. This was compounded by the appearance that the lower zinc on this cooler hadn't been changed in a long time, most likely because it was so hard to get at. So, I bought a new aftercooler for that engine. Starboard side was fine. Mechanic figures it also was never removed and cleaned either, but the moisture was kept down by the frequent changing of the bottom zinc (its right there, easy to get at).Make sure you get the aftercoolers done correctly. This includes removing and cleaning the cores replacing o rings and applying waterproof grease to seals. This need to be done every 2 years or you will be risking major problems. I know first hand as I replaced my aftercoolers 4 months after I bought the boat at the cost of 6k just for the parts. Internal leaking will cause premature engine wear also.
Thought I'd follow up on this post with my experience. I bought my 6CTA Cummins boat in November/2013 with 1025 hours and 13 years old. Been spending the offseason getting all the loose ends completed and getting a full maintenance cycle on the engines. During the aftercooler removal/cleaning we found excessive corrosion in the port aftercooler with no evidence it had ever been removed/cleaned in its 12 years. Cummins mechanic figured it came from condensation of moisture from the warm air collecting at the bottom of the cooler, and not being drained over time. This was compounded by the appearance that the lower zinc on this cooler hadn't been changed in a long time, most likely because it was so hard to get at. So, I bought a new aftercooler for that engine. Starboard side was fine. Mechanic figures it also was never removed and cleaned either, but the moisture was kept down by the frequent changing of the bottom zinc (its right there, easy to get at).
I am now going to go on a three year cycle for the aftercooler removal and cleaning and will be checking zincs every three months, no matter how much I have to contort myself to loosen bolts.
I thought the heat exchangers were the aftercoolers. So, you remove the covers, cores, flush everything and do o-rings every 3 years and remove the exchangers and send them out every 5 years?Good post, Bill.
The issue with aftercoolers (as it was explained to me by my Cummins tech) is that even though they might still look clean, corrosion is the primary issue that may create internal leak. So, the 3 yrs service solves all of this. t the same time the transmission coolers get inspected, and serviced if needed. So, this is very important maintenance items I don't think anyone should skip. Yes, it's a costly service, but at least you can spread apart heat exchanger service, which I was recommended to do every 5 years.
I thought the heat exchangers were the aftercoolers. So, you remove the covers, cores, flush everything and do o-rings every 3 years and remove the exchangers and send them out every 5 years?