Florin ? More info, please...
Thanks. Respy, CarlsCAT

"CarlsCAT" wrote:

Florin ? More info, please...
Thanks. Respy, CarlsCAT

www.acmocbb.org/ACMOC_BB/showthread.php?t=492

Florin Tractor
Sacramento,CA
www.florintractor.com
Dana at (916)383-0317 (800)223-9916
CAT & more, nos/used, real good prices, mention u came from the BB

carlsCAT,

I have removed combustion chambers on my 5J D2 using a short piece of
hexagonal steel that fits the inside of the chamber (about 3-4 inches long)
and then put a sutable socket on the other end and a long bar, be sure to
remove the grub screw in the side first, it will be easier if the head is still fitted to the block in the tractor, the chambers can take some shifting I know from experiance!

shovel man.

Those look like the press in chambers as they don't have any spline. It was covered on ACME just a month ago or so.

I see a threaded nose in that tool catalog picture from Bruce Oz.

My son and I are thinkin' we might take an injector off the
D2 3J221...and see what the cups look like on it...
May be we'll just have to buy one of the cups and come up with a plan to fabricate tools to work with it...
Respy, CarlsCAT

D2 Chambers are covered pretty good here www.antiquecaterpillar.net/ACF_v2/showth...10&highlight=chamber

yours must be threaded ones without the spline

Cleaned off the paint on the injectors to look for numbers and found all 4 injectors stamped...3 3/4 BORE ENGINES ONLY...One injector is different from the other three...I was wondering if maybe the head was different... But, I can't seem to locate a part number or casting number on the head....I tried to put a piece of white paper inside the chamber to rub a print of the threads inside the pre-cup...to see if the threads may be LEFT-HAND...No conclusion on that, but the bottom threads do appear to run opposite the injector threads...If this is the case, might be that a bolt could be made, or found from a bolt supplier, to fit...and extract the pre-combustion chambers...Whenever these pre-cups get removed, I think we will replace them with the newer hex ones...
I'm thinking on getting a piece of wood...shaped like a peg...about the diameter of the lower threads...and see how it would screw in and out to verify the threads...
Well, "The Devil Started Beatin' His Wife" (rain shower in sunshine), 102 degrees, clouded up, thunder, lightnin'...so, that's the end of my day for "shade-tree mechanikin' " ! ...The rain is some welcome relief...It's been real HOT and Dry...
Respy, CarlCAT

Carl - The description, "Operation 19 - Page 14" is a referral to the section of the Cat Service Tools book, where the individual parts comprising the tool group are listed.

The Service Tool book has two sections .. one section shows a picture of the tool, and a description of its use and the parts comprising any tool with multiple parts, described as a "group" .. and the other section comprises a lined chart, showing the engines or tractor models, and the tools or tool groups required for each particular component removal. There are often referrals to the picture section from the chart section .. and this is one of them.

There is no other information available in any of the Service Tool books, on that early precom removal tool, than what has been posted on here, or on ACME.
I have 5 Service tool books from Edition Six (1942) to Edition Eleven (1959), and there is no further breakdown in parts or component description, in any of those books, with regard to the very early D2 precom tool, P/N 6B7224.

Cat abandoned this precom design by about 1940, and expected Cat owners to convert to later design precoms whenever repair was required. I don't think the Cat engineers even dreamed that these early style precoms would still be around in the early 21st century. Unfortunately, you're on your own, from here on in, and your suggestions of methods of manufacturing a tool sound just fine by me.
Many people would just weld something in the center of this style precom, to screw them out, and replace them with the later version. I would imagine that any of this style of precom, still in an engine, are not likely to be re-useable, anyway.

FLASH !
Precombustion Chamber Removal Tool fabricated today !
ONE Precombustion Chamber Removed Before the Welding on the Tool Cooled Off ! Before Sun-down...
Respy, CarlCAT