Tire air pressure
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=163701
Printed Date: 28 Apr 2024 at 8:32pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Tire air pressure
Posted By: Phil (WY)
Subject: Tire air pressure
Date Posted: 17 Aug 2019 at 5:48pm
I have a D-14 with 14.9-26 tires on it. What's a good air pressure to run in them?
Thanks in advance.
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Replies:
Posted By: acd17toy
Date Posted: 17 Aug 2019 at 6:14pm
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The owners manual should tell how air pressure you need in the rear tires for any given load or condition.
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Posted By: jaybmiller
Date Posted: 17 Aug 2019 at 6:18pm
12-15 ish... I was told to always have 3 ribs on the ground.
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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Posted By: Dan Hauter
Date Posted: 17 Aug 2019 at 6:22pm
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If your tire pressure is too low you risk side wall cracking, especially with older tires. If the tire pressure is too high the tire will bounce while on the road, giving you a rough ride, and not put down much of a footprint when in the field, thus cutting down your traction. 18 pounds in the rears and 30 pounds in the front is a good place to start. As already noted, always check your owner's manual.
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Posted By: 200Tom1
Date Posted: 17 Aug 2019 at 6:32pm
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Phil. I spent 22 years in the farm tire business. I Put on many semi loads of farm rears. If I put those tires on your tractor I would have put 14 lbs in them. Do they have fluid in them? If so do you have a fluid gauge? You probably know all this, about the time your tractor was made, the people making inner tubes designed a new valve stem. The new style has male threads. The old style has female threads. If you have fluid in your tires, it is a good idea to figure out which style you have and keep a couple new ones around. It seems over the years calcium will destroy the valve cores and it can be a real pain to change the valve core. Most of the time it is easier to change the cote housing than the valve stem. They do make stainless steel valve cores to use with fluid. If the core is bad I guarentee it will leak when you check the air pressure. Sorry about the long post.
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Posted By: Jim.ME
Date Posted: 17 Aug 2019 at 6:52pm
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I run 14 psi in my D14s with 14.9 - 26s. In this case the owners manual doesn't tell that size. When those manuals were printed the tire options are shown as 11.00 - 26 (12 psi) or 12.00 - 26 (14 psi), the old size designation system. According to Miller's site the 12.00 is now called 13.6.
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Posted By: Phil (WY)
Date Posted: 17 Aug 2019 at 6:59pm
Thank you everyone. I had 12# in them and one went flat. The tire shop I took it to to repair it put 20# in it and said that's what I should run. I don't have an owners manual so I wanted your expert advice. I haven't owned this long.
Thanks, Phil.
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Posted By: Joe(TX)
Date Posted: 17 Aug 2019 at 9:57pm
If you are not running weights you do not need the higher pressure. The owners manual has the tire pressure for the amount of weight carried. 20 lbs. will made a bumpy ride.
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1970 190XT, 1973 200, 1962 D-19 Diesel, 1979 7010, 1957 WD45, 1950 WD, 1961 D17, Speed Patrol, D14, All crop 66 big bin, 180 diesel, 1970 170 diesel, FP80 forklift. Gleaner A
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Posted By: SteveM C/IL
Date Posted: 17 Aug 2019 at 10:38pm
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the sticker on the wheel center on dads WD says 12lb
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Posted By: DSeries4
Date Posted: 18 Aug 2019 at 8:13pm
I never run more than 15 psi in any rear tires.
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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '61 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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Posted By: TedBuiskerN.IL.
Date Posted: 20 Aug 2019 at 8:24pm
12 psi in the rear, and 28 in the fronts is what the books call for. If you are running a heavy fully mounted piece of equipment they recommend adding 2 psi making it 14 psi.
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Most problems can be solved with the proper application of high explosives.
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