Cat Thirty tail seat

tube radiator and small track adjusters are early is the valve cover steel or aluminum what intake /exhaust manifold is on the tractor how about a close up of the steering clutch levers and hook up linckage would there been a small brass tag on the tub below the clutch inspection cover

Thanks for the reply,

Have more pics below. Manifolds are excellent, later style. A possible aftermarket kit for heat valve with double pipe exhaust. Doesn't look homemade. No tag under inspection cover. Rivets are still there. Stamped steel rocker cover.

[attachment=43527]30 tailseat 006.jpg[/attachment] [attachment=43528]30 tailseat 005.jpg[/attachment]

[attachment=43529]30 tailseat 004.jpg[/attachment] [attachment=43530]30 tailseat 008.jpg[/attachment]

[attachment=43531]30 tailseat 009.jpg[/attachment] [attachment=43532]30 tailseat 003.jpg[/attachment]

Hope these help, can get more info if I know what to look for

chuckb- by the way nice stamp collection!

I believe I am at an end here. Removed fuel tank this morning hoping for a number under the front bracket, no go.

So must be 1926/1927 as to parts, tube rad and small track adj. The manifolds look exceptional and I think were changed out later in life.

The 576 # may be in 1927. No way to verify. 😞

Thanks to everyone for their time and replies.

I believe I am at an end here. Removed fuel tank this morning hoping for a number under the front bracket, no go.

So must be 1926/1927 as to parts, tube rad and small track adj. The manifolds look exceptional and I think were changed out later in life.

The 576 # may be in 1927. No way to verify. 😞

Thanks to everyone for their time and replies.

OK if there are 2 rivets on the tub below the inspection cover that would have been a tractor number probably a Best that is a later manifold with some kind of home made heat box this should have had the "snake pit " type of manifold i am thinking possibly a 1925 or transition machine is there a carburetor? thanks for the comment on the stamp collection

More pics, some redundant. Radiator seems to be built up of both Best and Cat parts. Top rad tube early. There WAS a tag below middle inspection cover. No mounting blocks on side of trans case, has slot with studs in rear of case, for canopy? Here for inspection, for those more knowledgeable than me.

[attachment=43540]30 tailseat home set 2 001.jpg[/attachment] [attachment=43541]30 tailseat home set 2 002.jpg[/attachment] [attachment=43542]30 tailseat home set 2 003.jpg[/attachment]

[attachment=43543]30 tailseat home set 2 004.jpg[/attachment] [attachment=43544]30 tailseat home set 2 005.jpg[/attachment] [attachment=43545]30 tailseat home set 2 006.jpg[/attachment]

[attachment=43546]30 tailseat home set 2 007.jpg[/attachment] [attachment=43547]30 tailseat home set 2 009.jpg[/attachment] [attachment=43548]30 tailseat home set 2 010.jpg[/attachment]

[attachment=43549]30 tailseat home set 2 008.jpg[/attachment]

Your no 576 I believe has to due with assembly. I found a 3 digit no. on my best 30 on top of the rear case, and the same no painted on the ring gear cover inside of the steering clutch area.

Your tractor is a San Leandro tractor made before tractor number S4683. Tractor S4683 was the tractor when the top seat because standard. All PS tractors were built after the change to top seat as standard. In picture three if you look at the top of the radiator top tank there are no bosses cast into it to attach the top seat canopy brackets. In pictures 7-9 the main trani. case does not have the bosses it needs to attach the top seat fenders. There is a difference in the main trani. case under the top cover also but the top cover needs to come off to see it well. In picture 5 is the remains of your serial number plate. Your carrier roller brackets are the earlier type also, the part number on them stayed the same but the design changed over time. I have S4647 in my shop in pieces and it has neither the bosses on the radiator top tank or the ones on the main trani case.
Thanks
Ken

Thanks Ken, Super info, helps me a bunch. Then this would be a 1925 or 1926 S series? According to SN reference manual.

Could you get a picture of your trans case, inside? I believe this machine did have a canopy. Which is different than top seat style. Would make sense if it was Cal. built.

Probably as close as I can get without the actual brass tag.

Thanks to all for their time and input!

👍😄