motor identification

[Kolot]

I saw and add on market place, JD 3cyl engine $350. Skeptical but went to look at it and it had everything complete radiator, starter, inj pump, alt. and still attached to reverser. sitting in the grass but guy said it was running good when he removed it. For the money it was worth it for the external parts. when I checked it it won't make a full revolution, get about 340 degrees either cw or ccw. can be a few different things but hoping is a valve stuck open contacting a piston. Don't really care. Can anybody tell me if infact it's for a 350 and what year. I have machine serial numbers charts but not engine. Number on it is SNM43TE013095 T little plate bottom of block near oil pan.
Also my manual tells me the machine weight for a 350 but not individual components, Anybody know what this engine coupled with the reverser might weigh? I have to take it off my truck tomorrow with my medium size skidsteer and wondering if it will handle it or if I have to split them? Machine should handle 2,000 lb alright.

[Jim B]

Below is the breakdown of the early engine serial numbers from an early 350 service manual. it is a 3-cylinder diesel that was originally in a 350 crawler loader. I don't know of any way to tell the year without going back to John Deere. The serial number format indicates it is an early 3-152 diesel engine (1965-1966).

I don't know the weight, but I think you will be able to unload it with your skid steer. As with any load don't pick any higher than needed, keep it close to, the ground once clear of the truck and when travelling. If you have a quick attach and can reach it without a bucket on, the closer to the end of the boom arms you can hitch the better.

[Kolot]

Thanks Jim, that helps a lot. Have not been around these for long but at a glance I was pretty sure that was a 350 motor and reverser.
I did see on the broken tractor parts site they list this engine for sale as a long block with a shipping weight of 400 lbs.
When I picked it up the guy loading it was inexperienced with his bobcat 853 which is a sizable skid, he refused to load it into the middle of my flatbed because he thouht his machine would not handle it that far out from his machine so it ended up on the very end of my bed. The whole experience was just weird and frustrating but what can you do.
Seeing 400 lb on motor makes me think no problem, even if that reverser is over 1000 and I dont think it is.
Guy was just nervous I guess.

[LeonardL]

Your combined weight will be less than a 1000 pounds. I'm guessing around 700 to maybe 800 pounds. I easily handled a 350 engine with my little 1025R compact tractor.

[Kolot]

Once I got it on the hook I almost had to laugh , the New Holland skidsteer handled it easy, the guy loading it had a huge Bobcat and said he was afraid it eould tip had me thinking this thing was over a ton, the reverser does look heavy I guess.
Anyway tore exhaust manifold off and held the valves open while blowing compressed air through ports and a ton of crap came out of exhaust and intake. Motor now turns free , still may pull head for thorough cleaning. Compression seems good and under valve cover was clean.

[Kolot]

If I pull the head for cleaning snd a little R&R do I need new head bolts to reinstall, dont know if these are a stretch bolt design?

[Jim B]

As long as they look good, they can be re-used. They are not torqued to yield bolts. Clean them well, wire brush the threads and inspect them carefully. Lightly oil them before installation. The holes in the block should be cleaned and be chased with a bottoming tap (blow out when finished).

When you remove the head use some short cap screws with washers in the head bolt holes to clamp the cylinder liners down, otherwise the liners could pop up when the engine is turned over.

Your Service Manual engine section should cover most of this.

[Kolot]

Good thought Jim on clamping the liners down.
this thing now turns freely, pulled manifold and mufler got a lot of small acorns or some kind of round nuts and a mouse nest out of it. Not sure if it was in the mufler or I back blew it out of a cylinder into the muffler with compressed air.
So do I take the head off or attempt firing it up?

[pop pop]

stick a propane torch in there and burn up the mouse left-overs. then blow it out again, probably be good to go.

[Kolot]

So I have gotten back to messing with this spare engine, have it turning fine, took out the injectors and did a compression test found I have about 200 on all 3 cylinders mind you this engine has been sitting for years, gave each cylinder a squirt of oil and retested. Now see just under 250 each cylinder but I have not looked up the spec yet. Pop tested the injectors, 1 out of 3 is acceptable so it looks like a set of injectors are in order. I looked at my parts manual for my dozer but it has serial number breaks for the injectors however I don't have the serial number of the machine this engine came out of. Was told it was a JD350. Engine serial number is SNM43TE 013095T with a block casting number of T23404T. Any way to determine what this really came out of and what injector it will need? Injectors in it have metal bleed of T caps that hold on with a compression nut, wondering if these can just be converted to Rubber T caps? don't see why not.
Removed injection pump top cover and fuel was a little brown but I have introduced new fuel as I did try cranking but no fire. as I said injector not good. Everything in pump was free including the check valve on return, but I think the pump could use a seal kit and a good cleaning. probably do the govenor ring but I did not see any major debris up top. Anybody have the part number for the govenor ring upgrade to 1 piece?

[Jim B]

According to the service manual page I copied and posted for you previously, the E in the engine serial number means it was originally installed in a 350 crawler loader. Could it have been swapped from that into something else over the years, of course, but it left Dubuque in a 350 crawler loader.

August thread on identifying your engine

Using the online parts catalog there is one replacement injection nozzle that replaces the earlier ones. It is part number AR89564 (A&I number A-AR89564). Some of the other parts such as the return boots may need to be changed along with the nozzle. The online catalog has most of the latest part number substitutions/changes for earlier part numbers. Below is a link to the online parts Catalog if you don't have it.

PC921 JD 350 Crawler Tractor

You can find part numbers for injection pump parts in the catalog as well and use them to web search. It is your pump and your choice; I do not mess with them myself even though I have had some training on them. If I have one that needs repair I send it to a shop with the correct tools, specification information and equipment to calibrate and test them when completed. Some have done their own repairs, and it worked out, some have cost themselves more money than having a shop do it, your choice. Also, there may be some of the pumps that parts are not available for as I believe there was an upgrade conversion of the pump to a later pump. I don't remember all the details but Lavoy, Leonard, Jason or one of the other fellows might.

[Kolot]

my thinking was to just clean out the pump and leave the parts that handle the calibrations. This is what others have done. The Utube videos I have watched make the pump out to be not all that complex. That said, most of the videos don't show the pump back in and running again. These pumps don't seem all that complicated and it seems everyone is mistified by the fact it is an injection pump. If I pull the timing window cover can I just pour clean fuel in the top to flush it out? I plan on putting a new set of injectors in and don't want to send them debris or varnish right off the bat.

[Jim B]

I am not mystified by them; however, I know I don't have the special tools, equipment, and latest technical information to do a rebuild correctly.

If you just want to flush it some remove the timing window and hand pump the transfer pump to push some fresh fuel through it.

[Kolot]

will a solvent like brake clean or fuel injector cleaner help or hurt anything in the pump, or is clean diesel sufficient? I did use a bulb suction turkey baster typ to pull out some of the old fuel but can only get so much.

[Jim B]

Just flush some clean, fresh diesel through it, not brake cleaner type solvents. It will need lubrication, and the brake cleaner solvents will take lubrication away.