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Tractor Talk Discussion Forum

Tire Pressure

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JeffK-MN

03-12-2004 19:18:00




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What is the best way to check the tire pressure in tractors back tires That have fluid in them? I have a Oliver 77 that I'm working on and want to find out what is the tire pressure for the back and also the front which is a tricycle type? Thanks I'm verry new to working around tractors but injoying it Jeff




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ted

03-14-2004 06:40:59




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 Re: Tire Pressure in reply to JeffK-MN, 03-12-2004 19:18:00  
Get you a spring loaded liquid guage. When you get done checking the tires, put the head in running water and pull out the stick a few times. It should suck in some water and rinse itself out fairly decent.



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Jim

03-13-2004 05:45:19




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 Re: Tire Pressure in reply to JeffK-MN, 03-12-2004 19:18:00  
I've been in the ag. tire buisness for 25 years and I'm going to say to you don't waste your time or money on the fluid gauge. people seem to have this idea that fluid gauges don't go bad truth be known if you clean it and lubricate it it will last longer but for as often as you will be checking your tires it will be rusted just the same as a regular gauge. The key is to not get the fluid in it in the first place.Follow the persons advice on putting the valve at the 12:00 position, shoot some air in in first to clear the valve of any solution that may be in there. If you haven't aired the tire for a period of time you will want to go to the local tire shop to get a replacement core housing, it is the outermost valve that the valve core itself goes into, We sell them for $3.00 and all you need to replace it is a pair of pliers, if you call a tire repairman to do it you get involved in a service call, and labor, so it would be wise for you to replace it now. I get a number of calls that when I go out they tell me that "all they did was air up the tire and the fluid started to drip" then I proceed to change the core housing a chore that takes about 30 seconds, then while I'm there usally I will change the other one, because eventually it to will begin to leak, and it will save agravation down the road. If your tire is overfull with fluid jack up you tractor and put the valve at 12:03 and take the valve out let it drain down (make sure your not in your yard when you do this as your grass will surely die from the calcium) then put it at 12:00 and put in your new core housing and air it up. The tire will probably call for 18 P.S.I. but in a 77 depending on how heavy a workload you are doing 14 - 18 will be OK. If you usually wear leather gloves you may want to let them off to do this job when they get wet with the calcium and then dry you won't get them on again because of a shrinkage problem.

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Scott Green

03-13-2004 04:19:12




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 Re: Tire Pressure in reply to JeffK-MN, 03-12-2004 19:18:00  
Here's what we do for loaded tires. Put the valve stem at the top. Put just enough air in the tire till the bulge it gone from the bottom of the tire.



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BobMo

03-12-2004 20:00:59




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 Re: Tire Pressure in reply to JeffK-MN, 03-12-2004 19:18:00  
Buy a wet gage and be done with it. You can get onee at any farm supply store or from a dealer. I would suggest the farm supply as it will be 1/2 the price.....



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Roger

03-12-2004 19:33:44




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 Re: Tire Pressure in reply to JeffK-MN, 03-12-2004 19:18:00  
Rolling the valve stem to the top is best. However, you can buy a tire gauge that will retract and push the water out. They are more expensive and most parts stores have never heard of them.



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Kevin (FL)

03-12-2004 19:26:04




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 Re: Tire Pressure in reply to JeffK-MN, 03-12-2004 19:18:00  
Jeff,

On my Ford, I just stop the tractor so the valve is at the 12 o'clock position. Then I can check the air that's "on top" of the fluid. Since the tire isn't supposed to be filled up with fluid you should be "in the air" while checking--that should work.



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