Precombustion chamber tool

Scan below should help--your new glow plug type pre-chambers will be one piece units to accommodate the glow plugs and the same splined tool, 5F8353 should fit- glow plug type pre-chambers use an external splined tool for the injector retaining nut--P/No 8S2243.

Scans also contain alignment details for the glow plugs/pre-chambers should they foul the valve cover--also different thickness pre-chamber washers to allow alignment as described--not found at this time so will post this and keep looking.
Cheers,
Eddie B.

Edit,
the chart for Pre-chamber washers is for later engines so may not apply for the earlier D311 etc.

There are no 12V glow plugs that fit those chambers.

thats easily done you use 3 batteries, 2 very small 12v ones in series to get the 24v for the glow system and a single high output 12v unit for the starter. charging is done via a 24 volt alternator and a 24 to 12 dc to dc charger. most prime movers today are wired this way as the ecm, lighting and the dash are 12v with the engine electrics being 24v.

or go 24v everything.

Thank you Ed for the part number and detail scans. Old Magnet, I know from previous discussion that CAT never made a 12 volt glow plug, but I hope I can find one that someone else made. And if desired, I have already thought about trainzkid88 idea, perhaps with the two smaller batteries in a separate tool box, maybe not even attached to the tractor. Sort of carry the tool box to the tractor, start it and put the battery pack back into the garage or truck. All good ideas and useful information as usual. Thank you all! Elton

There are plenty of 12v glowplugs around. If you can find one that has the right length from the thread to the tip, and the thread is either correct for your hole, or is small enough such that you can put a (blanking on the name) sleeve with internal and external thread, then it'll screw right in. You could also find plugs that have a thread large enough so that you could enlarge the hole in the precombustion chamber. The ones on my Yanmar are very thin with maybe a 10mm diameter thread for example. Meantime, if you're near mains power, you can always use a block heater to make starting easy.