Full service on a Cummins 5.9BTA 315hp

I have twin qsb 5.9 and have paid for oil, oil filter, fuel filter, impeller, zincs but not after cooler service just under $1,300 done by Cummins NW tech.

If there are no receipts, don't trust a dam thing on past service.
We were just reminded of this in another thread.

It took us two days for everything on later Cummin and Detroit engines.
Setting up, The service, Cleaning up, Delivery..
That did not include R&R the air coolers.
This was the norm for engines that we had already serviced or was properly serviced before.

I remember burning up hours removing zinc plugs that had never been services for years,, if ever.
Ever hour that went by on the phone with the owner, texting him pictures and the reply,,, The previous owner said this, that and all was serviceable.

Then the hours trying to service air coolers that had never been serviced.
Seized bolts, weeping seals..

Oh, the Sheerweed raw water pumps. A problem point itself but a mess if not dealt with.
Yep, cleaned up many of these messes on supposed perfectly maintained engines.

One of the members here taught me long ago, No Proof, Didn't happen.

Survey the engines well. Very well.

I remember one supposed well maintained boat broke a motor mount during sea trials. Yep, left front under the sheerweed raw water pump.
It was just rust that held the engine up till,,,
Surveyor and proposed buyer could not get off that boat fast enough.

Aftercooler and heat exchanger service is off-engine. Remove, let the radiator shop (for example) do their magic, reinstall. Don't remember cost; wasn't huge in the grand scheme of things, and much of it is labor to remove and reinstall.

If you're baselining new-to-you engines, replacing all the hoses, and probably the gear oil coolers, is a good thing. Labor plus parts.

More baselining: valve adjustment, and coolant drain/flush/replace with new. And properly clean-up/paint any rusted bits, bolt heads, etc.

I've read the raw water pump impeller on the 5.9s is a PITA to change... and that Seaboard Marine sells a replacement that's better. No further info on that. (We stayed with the original Sherwood pumps on our 8.3s, no particularly huge issue with those. I think I was told the Seaboard replacement pumps use splined -- rather than keyed -- impellers, and if so that may have been an improvement that we never experimented with.)

While you're at it, adding vacuum gauges and the easier drain plug to Racors can simplify your own work later on.

-Chris

My Previous boat had 315 Cummins. I did all that work on my own engines and as stated above, about a day disassembly and bring home clean after coolers and reassemble paint etc. heat exchangers I would bring to radiator shop then a day reassembly. I documented with picture and receipts for O-Rings, gaskets etc. I had to change multiple Sherwood pumps (need to Jack up engine and remove left front motor Mount then pump removal is easy. I finally switched to Seaboard pumps and never changed a pump again. The splined impellers are much better and you can’t drop the key into the intake hose (done that a few times). When you purchase the Seaboard impellers they come with a removal tool and impeller changes can be done in about 15 minutes.
Anyway when I sold boat the pictures, parts receipts, and maintenance log were well documented. If the maintenance was truly done the owner should be able to show you.

Yep