D15 Value?

S/Ns for Series 1 are: 1960, 1001-1899 1961, 1900-6469 1962, 6470-8169. They made 40 LPG in 1960, 51 in 1961 and 31 in 1962 for of a total production of 122 out of 9375 D15 Series Is, so yes, they're rare. I have no source for how many were dual or wide-front. The problem with the hand clutch is it's so expensive to repair, and you have to break the tractor apart to do it. If it's slipping when engaged it probably needs all-new clutch plates and if it's that far gone the rest of the assembly may be scored or gouged and that's big bucks. I suggest you buy an I&T shop manual to get an idea of what you'll have to do. And I also suggest Norm Swinford's book "Allis-Chalmers Farm Equipment 1914-1985". It's a gold mine of tech and restoration info with lots of color pictures and S/Ns and production data. Glad I could help.

Can't say for sure. 1154 were built from
1960-1963, that's all I can tell you. My books show no data for 1963-up. However, both Series I & 2 used the same engine, so the horsepower remained at 36-1/2--little more than a D14. The D15 diesels just weren't powerful enough to pull the equipment they should have been able to. The D15 Series II gas was a full 10 horsepower stronger than the diesel. Hope this helps.

The value depends on if it's a Series I or Series II. The Series I gas had 40hp at the PTO and the LPG had 37. The Series II gas had 46 and the LPG had 43. The Series I engine was 149ci, the II was 160. All of them were Persian Orange #2 with cream grilles, but the Series I had metal nameplates on the hood, the II had cream decals. The easiest way to tell is by the muffler and air cleaner--the Series II had an oval muffler on the left side and a dry-element air cleaner mounted on the right side of the engine, the Series I had a small round muffler and an oil-bath air cleaner on the left side behind the muffler. The Series II is a better tractor all around and they go for $2800-$3500 around here in good condition. A Series I would go for around $2200-$3000. Full weights up the value $500, as does power steering, especially to a collector. A factory 3-point hitch is rare in these parts and adds to the value, but a cobbled-up 3-point actually DE-values it. The LPG would only be worth something extra to a collector, and they ARE rare. The D15's weak points are 3rd gear, high-range in the Power Director, and the Series II's brakes. Those in the know look for these because they're so expensive to repair. Hope this helps.

Someone else told me there were only 122 D15 Series I LP made and very few of those NF - maybe 30? or so - any more info would be of interest.

3 point on the WF is a snap coupler insert with 3rd point bracket behind seat - I had understood such existed from AC as option. Other has snap coupler and top link look pretty good, but attachment of lower arms cobbled up in my opinion.

What is problem with power director? The LP NF slips some but I thought it is low range. I was told you could adjust by changing shim packs in Power Director clutch? but have not gotten to that - I don't use this tractor and too many other fish to fry.

I had to replace rear tires on the WF (good used Goodyear 14.9-26 off a combine) as well as new manifold / exhaust to bring it back to good working status. Both are in need of cleanup and painting. I had intended to do that and try to sell individually, but running out of time and space and had an interest in buying the pair.

Sounds like $5000-6000 range for the pair since Series I - with added value for LP/NF offset somewhat by cobbled 3 point and slipping PD?

Still looking for any other info, but I think that helps me a lot - if I don't sell to this guy, I'll probably try to see whats up with PD clutch and lose the cobbled 3-point when I get a chance and maybe post with some photos on classifieds when I get a chance.