looking for farm dozer 450, 550

Have heard the 550 JD's can be very expensive to fix the trans. How much do you want to spend and what do you want to do with it? If the undercarriage is shot, it's usually worth more than the machine is worth to replace it.
 
When you go looking at a dozer , please take someone with you who knows equipment intimately.. I've seen people buy crawlers without any clue what to look for and get bit right on the "tookus".. Undercarriage is very pricey , Broken castings , cracked frames , transmission and steering clutches and final drives could put your investment right in the dumpster...Of all the iron out there , the best investment I ever made was a Allis Chalmers HD-5 dozer with Allis power, that was used by the forestry division.. I have since sold it and it's still out there working on a farm/winery.. Deere makes a good dozer if you do the required maintenance on the transmission speed of shift and pressure adjustments.. I'd stay away from the 550 series because of the transmissions.. These Brit Twin Disc torque converter transmissions are great when they are working correctly , but a real headache when not.. People usually don't sell them unless they suspect a problem coming..
 
Bought and sold dozer for 30+ years. Almost to a T EVER 550 I ever had broken frame rails at the transmission attach point. 550 is just an overgrown 450 and frame could not stand the extra hp. Look close at the frame if you are dead set on 550. Good cheap farm doze is the td7 c,e,g ih or td8 c,e, g or some of the latter deers. As the other poster says find someone who really knows dozers and again just because bill bob has ran one or owned one does not mean he know jack about a dozer. Find a good qualified person to look and help you or you can buy a machine that will cost you for the rest of your life. On the other hand you can buy a good one and it turns out to be you GOLF or relaxation and play thing .. Good luck and shop around.
 
What is an HD5 with "Allis Power?"

I've got an HD6 with the Allis/Buda 344 four-stroke-cycle engine. I thought all the HD5s had two-stroke-cycle Detroits. HD6 is basically just an HD5 with a different engine.

Just curious and wondering if your reference is to the engine or some other option. I agree - the HD5s and HD6s are very rugged. Also kind of crude and I suspect many would not welcome the hand-clutch.

In regard to Deere crawlers - they all cracked side-frames in back. 1010s did it the worst along with the thin steering-clutch housings. 350s take 2nd place along with the reversers coming loose at the trans. I'd put the 550s in 3nd place. 450s were one of the most durable. At least the ones we sold. Many of the new Deeres we sold got used in foresty and that resulted in a lot more abuse then the dirt-pushers.
 
All I know is it said Allis Chalmers on the valve cover.. And yes it was a hand clutch , but it was pretty simple to operate.. Being a forestry unit it was in very good shape..
 
HD5 had a Detroit. HD6 was when Allis Chalmers quit buying Detroits and started using Buda engines. Thus the HD6 was basically an HD5 with an engine swap.
 

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