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Hello everybody. I just bought an '83 international 1854 brush truck with a DT466 with 97k miles. It runs great and starts easy now that I put new rubber fuel lines in. My question is about the viscous fan clutch. From what I've read they're problematic. The guy i bought it from said it never overheated on him but it runs anywhere from 190*-220*. I'm getting an oil analysis done, but I'm confident the liner o-rings will hold up for at least one season.
When I turn the fan by hand with cold engine, there's quite a bit of resistance, then no resistance. It looks like its the original fan clutch from '83. During my test drive it hit almost 220 and the fan never engaged. I'm assuming that means it's bad. I've been looking for a Horton Ec450, but it doesn't look like it will bolt on. I've pressure washed the radiator, soaked it in oven cleaner and washed it out again. It wasn't very dirty- radiators get washed out on fires pretty frequently due to noxious weed spread. Any suggestions on a replacement fan clutch? Unfortunately dealer prices are pretty much out of the question. Currently I'm waiting on an infrared temp gun to test the temp drop through the radiator. IH told me it should be 12*-15* but I am doubting it's a problem with the radiator at this point. Any help would be appreciated!
Jim
When I turn the fan by hand with cold engine, there's quite a bit of resistance, then no resistance. It looks like its the original fan clutch from '83. During my test drive it hit almost 220 and the fan never engaged. I'm assuming that means it's bad. I've been looking for a Horton Ec450, but it doesn't look like it will bolt on. I've pressure washed the radiator, soaked it in oven cleaner and washed it out again. It wasn't very dirty- radiators get washed out on fires pretty frequently due to noxious weed spread. Any suggestions on a replacement fan clutch? Unfortunately dealer prices are pretty much out of the question. Currently I'm waiting on an infrared temp gun to test the temp drop through the radiator. IH told me it should be 12*-15* but I am doubting it's a problem with the radiator at this point. Any help would be appreciated!
Jim