Is it possible to unbolt the top tank, rod out the core, replace gasket and tank and get back to work?

I guess you could do it that way but you,d need the bottom pipe off so the crud can be washed out from below. Also if you have a steam jenny you could steam it out but if you have the time why don,t you remove it & take it to a radiator shop & have it boiled out & then you got a good job on it.We always sent ours out from the dealer to a rad. shop & had it done & they were like new then when they came back. Some had to have repairs but all of them were boiled out.

The boss (wife) has me on a short leash when it comes to these types of projects. I had it boiled out locally two years ago, and it worked fine for a while. I was just wondering if what I was seeing in the parts book could be attempted by my son and I. Thanks.

Yes give it a try in the tractor to clean it out. No one knows if they never had liners out of an engine how much crudy, sandy type dirt builds up in the water jacket area around the liner area.I,m sure some of this if it,s built up in your block could be circulating in the coolant & getting into the radiator passages. It is even pretty hard to get it flushed out of the block by just draining the block.You could try with the water pipes removed & the block drain plug taken out to take a hose & keep flushing it out from the thermostat housing but a least one will need to be removed to get the water down through the block.

Hi shovelhead, if the Boss is on your case, it may be worth stripping out the oil coolers , as these things get blocked up a lot faster than the rad, they can be cleaned out like new using a piece of stiff wire or welding rod poked up the water tubes , the cooler gasket kit is only cheap $$$$ from a N.O.E. supply, I can listen to a D6 tractor engine on shutdown and know the coolers are blocked,the radiator on near all engines is designed with about 30% spare capacity (draw down) before you start having overheating snags, tracked loaders are well known for blocked /pegged rads also blocked oil coolers, give it a look it is simple to do ???. but always strip both ends of the coolers so as to remove all the crud.
tctractors