While I wait for supplies to show up so I can finish the exhaust risers, I avoided the blistering heat of summer and headed into the relatively cool engine room to finish up the coolant systems.
I’ve never used Constant Torque clamps before, but I know some guys who swear by them. Clearly, Cummins likes them. But they seem to rip out the treaded portion of the bands. I suppose this could be from overtightening… Either way, I need to replace them. Like everything else, I figure out what parts I need, order them online, and hope they show up during the following week. I’ve pretty much stopped ordering parts locally, since state sales tax adds significantly to the cost of everything and shipping (even from far away places) tends to at least break even if not save money.
With all of the lines replaced, I tested the coolant to make sure it was within specs. From what I’ve read, the 6CTA engines have sleeved blocks and additives are required in the coolant to avoid crevice corrosion. When I drained the coolant it was extremely clean, so I ordered some test kits to check the status.
So I refilled the coolant systems, and that’s another check box on the honey-do list. I’m still waiting for my argon diffuser to arrive so I can finish welding the exhaust risers. The only things left to do on the engines is wrap up the fuel system and raw water supply.