Aftercooler removal

[Rosebud]

Hi
Wondering if anyone had to remove the aftercooler on a Volvo Penta Tamd40b on a Nimbus 3000, I broke off two anodes, yes two, and I would like to remove them as they aren't going to be much good if not connected and probably block the water flow. Anyone with a Nimbus 3000 knows how difficult that's going to be, no room to work, can't even see how the seawater is connected.
Anyone on the forum with experience working on a Nimbus 3000 know how this can be done without lifting the engine, your comments would be greatly appreciated.

 

[adulik]

Simple solution run barnacle buster in a closed loop for 4 to 8 hrs and it will fully dissolve the anodes and clean your system. Remove any other anodes before starting to pump barnacle buster. Replace all zincs when done. A 5 gal bucket with a small bilge pump and the proper hoses and you’re all set.

 

[firehoser75]

Barnacle Buster is only really a "stop gap' measure that could help with some of (a part of) the necessary maintenance. As far as an aftercooler is concerned, BB only does a portion of the needed maintenance to avoid a future expensive repair. Running BB does nothing to clean the air side of the aftercooler that does get "gummed up" with oily deposits over time slowly decreasing air flow to the engine. Plus, you need to KEEP sea water out of the engine, so all "O" rings and/or seals need periodic replacing, as well as pressure testing the unit to ensure there are no leaks. Allowing salt water to enter the engine will lead to needing an engine replacement if left ongoing! All components of the cooling system require similar periodic off engine maintenance including cleaning, seal replacement, pressure testing, etc. as well.
Rosebud, sorry, I am familiar with the Cummins aftercooler (and 6BTA engine), but I am not familiar with the Volvo. You might try asking this question on the forum over at sbmar.com and maybe Tony Athens, a very knowledgeable marine mechanic, will answer, but if not, other members could be helpful.
Good luck.