Tractor Tire - MF3165 (rear) - valve problem?

PFS

New User
Pulled my MF3165 out, moved it about 30 yards to alongside workshop, began changing oil, and noticed rear tire nearly flat. Could put air in and raise tire, but slowly leaked out soon after. When last parked, stem must have been in 6:00 position, which explains the large wet spot near parking space. Tried removing stem - came out easily enough but large rush of air - put back in and slowed air to a trickle. Put in enough air to nurse it back into parking spot (bottom of barn, out of elements.) Possible the stem went bad? Possible to replace without removing tire? Both rear tires need to be replaced due to little-tread, but was hoping to put that off until Spring.
Any advice?
thanks,
Paul
 
Those valve cores do go bad and it is as simple as remove the old one and install a new one. Best if you have a jack under it so when you remove the valve core the air you put back in does not have to lift the weight of the tractor
 
Is not lifting the weight of the tractor to much for the air to lift or just goes up slow.
If you pull the old core out and then put the cap on till while set up to put the new core in it will hold the air loss down.
 
When you replace the core, put some grease on the new core threads. I also spray PB blaster in the valve needle. Helps seal it all up
 

Until you get it fixed air it up then block under it. That way it will go down only a little, which will protect the tire and tube, and it will take a lot less air to air it up when you want to use it.
 
Thanks for the replies and tips. Hoping it buys some time.
Is there a trick to knowing what replacement stem to buy, short of removing the original stem? There seem to be 3-4 stems that all vary slightly.
Thanks again,
Paul
 
If it's tubeless you just measure the hole size, but breaking the bead is the hard part. I just put rubber ones in when the brass ones break
off, rubber is more forgiving and I never intend to put fluid in them. Rubber ones you just put some dish soap on them and pull them in.
 

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