Scared to Buy AC 653

Driving up North Saturday to look at a 1973 Allis Chalmers 653 Dozer. Sale by owner. Owner tells me i will need to replace 2 lower support rollers (I think this is part number 1003796-8) and 4 fuel injectors (I think part number 4060859-8). Problem is I can't find the parts on line. Scaring me that maybe I should not buy this dozer. Heard good stuff about the dozer though and my father in law is excited about it. Any advice out there? Especially leads to parts suppliers.

Thanks Jay, owner says (of course) everything works and is running well. Spoke with him on phone. Seems like a straight shooter. Paying $8K. Did find 3 great leads on injectors. A place that cleans them, a refurb (half price of new), and new for $98 each with exchange. I'm going to try and determine if the roller needs internal parts for repair. Maybe bearings available for example where whole roller assembly seems extinct. Thanks!

If the rails and sprockets look good, I wouldn't worry. The rollers can be found used or repaired. HTH Tracy

As for bearings, you can measure the old bearings and get replacements. May not say they fit that dozer but they're probably still available. Our local Napa is good for this. They got me a bearing for a NH super 55 bar rake several dollars cheaper then it was from NH

post this on the construction side, those folks deal in this stuff all day long!

Price comparison:

Track loader one for sale in Wisconsin, needs steering clutches, $3500

https://www.machinerytrader.com/listings/construction-equipment/for-sale/23530469/1970-allis-chalmers-653


Summerix, MI $9500

https://www.machinerytrader.com/listings/construction-equipment/for-sale/11920551/1973-allis-chalmers-653

Owner says rails and sprockets good. Limited pics look ok but I’m at the other end of the spectrum from being an expert. My first. I hope your right because 2 days of searching netted zero on rollers. Thanks for the input Tracy. Ryder

Thendrix, thanks for the tip. I work with some mechanicalengineers who own and work on some old tractors. They said they Might be able to help me with roller refurb. We were looking over the exploded diagram. I’m sure it all looks easier than it really is. Ryder

You should be able to tell if the finals are leaking any. That's at least a start.

Allis, will do. Going to make sure we run her and excercise her then i’ll Be checking for class 2 and 3 leaks of any kind. More research will help me make sure I know what I’m looking at.Takes me back to my Army PMCS (preventive maintenance checks and services).

Gary, thanks for the options/comparison. I do need a Dozer for the work I’m doing. I actually saw the ad for the MI Dozer in my search. The price is on par for the one I’m looking at which has ROPS.

Perfect, thank you.

For track wear, the chart on this webpage gives you per cent worn out with a simple measurement of 4 links on the track rail.   Saves the discussion of whether the rails are "good" or "bad".   The 653 specs are there.

Mack, agree with your sentiment. I am quite looking forward to working on her. I have a father in law and an uncle who do this kind of thing. The uncle actually used to work in a shop with heavy equipment including dozers. Problem is they are already in Montana and can’t go with me. Off th grid kind o guys so no smart phones. They aren’t worried bout the rollers either. Said just get er and bring er home.

So I bought the AC653 Dozer.
Ran her all summer and fall. I can’t get my father-in-law off of it. He wore out the sprockets having so much fun so I need new ones. HD Sprockets won’t work I know because I bought a pair they had no bevel and would not line up with the track rail. Where can I get some aftermarket brand new ones ?