H Donaldson Air Pre-Cleaner - Water?

FBH44

Well-known Member
Something has been telling me to check the oil level in my H air pre-cleaner. Removed the bottom cup yesterday, and it is almost totally full. In the bottom is white sludge, and total of about 1" of water. And it ahs not been stored outside in weather at all, always been inside the barn. I guess this is condensation accumulating. Probably 5 - 6 year since I Filled it to the correct level with new oil. Anybody else had this happen? You suppose it really is condensation building up?
 
wait ... maybe this is from all the trips to the car wash, keeping this old baby sparkling clean?? Think that might have a little something to do with it????
 
Just imagine all the water that got into other places it doesn't belong! Best to wash these old girls with a bucket and sponge and quickly and lightly rinse with a garden hose set to just a bit more than a trickle and shammy off the sheet metal. Try to shammy as much of the iron you can get too. Might try blowing puddled water off with compressed air. Those cap screw recesses on the operators platform are blamed for allowing water into the transmission and final drives. I've seen them filled with silicon RTV, body putty, even carpeted over, a good coat of 2150 red paint would seal them as good as anything.

The high pressure spray from a car wash or pressure washer is REALLY hard on stuff. All the seals, linkages, exposed vents and breathers you get water and so into is really hard on the working parts. I blasted all the paint off the rocker panels of my first car the first winter I owned it. I've got a 12 year old car in the driveway now I have only ever washed once, parked under a tree beside my Father-in-law'S driveway and a Thousand birds pooped on it. The car was 2-3 weeks old at the time.
 
I have found the air cleaner is one of the most negotiated parts of a tractor. 99% of the time when I check them on other peoples tractors I am working on they are full of water and mud
 
My 400 Operator's Manual says to service the Oil Cup every ten hours of operation. I'm thinking that may not be necessary for a tractor if its not under extreme working conditions but it should be looked at regularly.
 
(quoted from post at 16:30:28 07/11/17) My 400 Operator's Manual says to service the Oil Cup every ten hours of operation. I'm thinking that may not be necessary for a tractor if its not under extreme working conditions but it should be looked at regularly.

Every 10 hours would for extremely dusty conditions. Otherwise, servicing the air cleaner when the engine oil and filter are changed should be good enough.
 
Oil bath air cleaners. Could not get customers to service them regularly. When they get over contaminated, the dirt tends to work it's way up into the mesh and into engine.

Enter dry air cleaner elements. Could not keep customers out of them. Taking them out and beating or blowing the snot out of them allowing dirt to escape right through them. Added a center safety air cleaner element and gauges to show restrictions. That helped, but still problems. Made model tractor where you had to take the side of hood off to get to air filter. Kept them out but made them mad. And so it goes.
 

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