Good morning folks.  I am beginning to collect the stuff necessary to install full electric starting on my D4 7U36219.  I have the precombustion chambers p/n 1S1970 and hope to find some 12 volt glow plugs, but now I need help with a part number for the correct tool to R & R the chambers.  I cannot find a tool reference in my parts book but I am hoping someone has a listing.  Thank you in advance for the information.
Elton
 

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

some jap brands used npt threads on glow plugs, injection lines etc. from memory one of those was yanmar.

yes if one can be found suitable length you may be able to get adapters made to suit.

i would have the batteries mounted on the machine so you always have them you might get stuck some where and not have vehicle access or worst luck forget to bring em with you. ive been there done that with tools and its not fun to have to drive home again just to get one or two things.