450 crawler/ White backhoe loader

I went 55 years with out owning a piece of equipment. Now
I?ve acquired a 1970 JD 450 that seems to be in good
condition. I need to do a steering brake adjustment and
replace some hoses but all minor details. Now fast forward a
couple weeks and I?ve been given a 1973 White backhoe
loader. It too looks as though it only needs minor repairs.

(quoted from post at 11:40:32 05/20/20) I went 55 years with out owning a piece of equipment. Now
I?ve acquired a 1970 JD 450 that seems to be in good
condition. I need to do a steering brake adjustment and
replace some hoses but all minor details. Now fast forward a
couple weeks and I've been given a 1973 White backhoe
loader. It too looks as though it only needs minor repairs.

Click to expand...

Not knowing how familiar you are with JD crawlers; if the manuals didn't come with the 450, and you don't have a set, get at least the JD Service (SM 2064) and Operator's manuals. There is a sequence to adjusting the steering clutches and brakes that needs to be followed. Make sure you get the ones for your series 450, as things changed some as they went to B, C, D, etc. You can use the parts catalogs on line at https://www.deere.com/en/parts-and-service/parts/. The loader will not be in the 450 parts catalog, just the bare crawler. The loader should have an ID tag on it some where and that model number is needed to find the loader parts catalog. Drott 4 in 1 buckets were a John Deere option on the loaders.

Likewise it will be well to find manuals for your backhoe, if you can.

Thanks for the information Jim. I?m not a mechanic yet as I just got the machines, lol. I?ll check out the link.
I have a leak on the 450?s fuel pump, you can see the drip circled. I?m assuming an O-ring but is there any surprises when I take that linkage off?

There will be others who will say different, but I would be sending it to an injection system shop for repair, not trying to do it myself (and I have had some training and worked on some pumps). That is an older style pump, which I believe is obsolete. Parts may be hard or impossible to find and it likely will need more than just an O-ring. I don't have the info in hand but there was/is a kit to change those out to different pumps. Injector lines and some other things had to be changed as well. It isn't cheap, so if it runs, you might want to think twice about learning to DIY on that injection pump. JMHO

Diesel Tech and Al Baker(Pumpman) are a couple injection service guys that post regularly on YT and may weigh in on it if they see this post. Other posters will say no problem, they did it on theirs, and they may have and had satisfactory results, I can't/won't dispute them.

Always remember - Its your machine. So in the end anything you decide to do is your decision; not mine or theirs; and you alone have live with the results of your choice.

It looks like the pictures are of the Drott bucket and one of its clamp cylinders. The Drott bucket was an option on the JD loader. There should be a John Deere model/serial number tag some where on the loader's main frame near the operator's station. The number will likely begin with 7450.

That injection pump is obsolete, if it works it can be taken down and re-sealed, but most hard parts are no longer available as pump has been replaced by the Stanadyne/Roosa JDB pump. I still see one on occasion in for leak issues..

That drip leak on the injection pump is usually an easy fix. Just two o-rings and no need to remove the pump to put them in. It is a common area to leak since it sees movement all the time due to the throttle pinion gear. I had to go out in the field or woods and fix many back in the 80s and 90s.

Those model pumps were discontinued long ago and many were replaced with kits from John Deere. Nothing wrong with the C-pumps except the lack of repair parts since the 1980s. If it was mine, I'd spend half an hour putting in those two o-rings. Then be careful and add oil-lube to my diesel fuel and hope that pump lasts forever.

I suggest if you ever get a chance to strip an injection pump changeover kit from a junk engine, you buy it. Kind of hard to find now adays.

Here is what pinion gear and o-rings look like.

Thanks Dieseltech. The machine fires up and idles, it also will rev without hesitation. I?m hoping there?s an o ring or common seal I can replace in there and it?s not leaking from a crack. I also see fuel weeping on top of the engine at rubber Injector lines. I see now there?s no clamp. It seems very fragile at this point so I won?t touch it until I move the JD to a better working spot and get some fuel line. I also need to replace the plastic oil bath and the air filter. Does that plastic fan piece come off? It covers half the filter. I am also looking for an air filter cap for the big filter above the tach and I?m not sure why the tach doesn?t work but then again I haven?t got that far. First fix fuel leaks

The Drott has definitely seen better days. It doesn?t close fully
and the backboard is dished. I see a model and serial number
on the back of loader frame. Model 55194 and serial 940
Where do I find parts, such as the air filter cap & oil bath. I
assume there?s a collectors yard somewhere( not junk yard,
lol )

First off you do not have an oil bath air cleaner. That plastic bowl is a dry dirt trap type precleaner for the air filter.

The correct new air cleaner filter element will come with the plastic fin arrangement on it. The fins, like the fins at the bottom of the precleaner bowl, create a swirl which aids in getting heavy/large dirt particles to drop out of the air stream before getting into the filter element to extend filter life.

To find your parts use the link to the John Deere parts catalogs I gave you above. To help you more here is a link direct to the 450Catalog: https://partscatalog.deere.com/jdrc/navigation/equipment/64777. Use the 450 crawler tractor parts catalog and get the John Deere part numbers for the precleaner bowl and air filter cap. You can use those numbers to check with your John Deere construction equipment dealer, check with salvage yards, and to use in on line searches. Note, if some item says "View Alternative Parts" it generally means there is an aftermarket part available from JD, usually A&I since JD owns them. The dealer may have to order it, many don't stock those parts.

The Drott serial number info you posted is on the bucket itself isn't it? It looks that way in the picture in your other post and it should be just for the bucket. The loader is everything that is lifting and dumping the bucket. The John Deere loader model/serial number tag will be back on one of the upright loader frames near the dash area, if I remember right. That is the info you will need to get loader parts and loader hydraulic parts.

I?m glad to have your expertise Jim. I?m making a list of parts
that I?ll be buying and try to order all at once

It says to replace the throttle lever seals. I’m guessing that’s the O-rings. I looked for a replacement part number but was unable.