Posted by 2510Paul on July 23, 2018 at 16:39:57 from (173.202.140.238):
In Reply to: Dad's 4320 Update posted by Bobl1958 on July 22, 2018 at 14:53:27:
In addition to all the good radiator cleaning comments below, I would suggest you get a flush product from NAPA. I flushed a 4055 and 4450. Drain coolant (dispose of properly), put in flush, fill with water, warm the tractor up, let it run and open the pet-cocks on the radiator and block, keep full by running garden hose into radiator fill (I like to run warm water in to lesson the shock to the block, maybe not needed but it makes me feel better.). Let the tractor run, including heater, and keep adding water until the water coming out of the pet-cocks starts to run clear or at least much improved. Turn off the tractor, drain water and refill with new coolant.
On the 4450 I took the radiator out (highly recommended) and emptied my hot water heater four times through my pressure washer to get that radiator clean. Ya, don't bend over the fins with the pressure washer. Then I took it to a radiator shop and had it leak tested. It tested good so back in it went. It's been running all summer but it has not seen chopper duty yet.
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Today's Featured Article - Oil Bath Air Filters - by Chris Pratt. Some of us grew up thinking that an air filter was a paper thing that allowed air to pass while trapping dirt particles of a particles of a certain size. What a surprise to open up your first old tractor's air filter case and find a can that appears to be filled with the scrap metal swept from around a machine shop metal lathe. To top that off, you have a cup with oil in it ("why would you want to lubricate your carburetor?"). On closer examination (and some reading in a AC D-14 service manual), I found out that this is a pretty ingenious method of cleaning the air in the tractor's intake tract.
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