JDcrawlers Messageboard

ok here's the update. I resorted to calling the dealer repairman. He's always been quick and knowledgeable, and willing to share. We traded several texts about what to do/check in case the problem could be solved without a repair cost from him. He did not have anything different to say other than wh...

I have almost always had it clear air, once it begins to catch. I did not run out of fuel, so I do not think the issue is air. I changed the fuel filter, blew out the low pressure lines, reprimed, all good. When it started the low power issue, it had been a few months since last running. It could be...

Thanks for the replies! This is a new issue. I haven't tried to bleed at the injectors yet (as you know, it is a PITA trying to get the two wrenches at once. Since it runs, I thought it would push the air out on its own). Since then, I believe I have ID'd a check valve on the return line, looks just...

Hi all, this forum has been very helpful! Appreciate any help I can get. I'm having start up and running issues. It acts like a fuel flow problem. I replaced the fuel filter (was very dirty), and for good measure, the transfer/lift pump. Blew the line from the fuel pump inlet to the tank. Have good ...

I checked the HLR fluid level, 5 days later, and absolutely no fluid on dipstick. So, much of it did make its way into the steering clutches. Once I get this all buttoned down, I'll create a post for common sump 450C draining and filling. There is no way I was prepared for 22+ gallons of hydraulic f...

Bruce, thanks again for the reply. I'm feeling more positive that I have the later common sump version, due to the lack of check plugs for the steering clutch (these are shown on p 49, Section 26, "Steering Clutch Housing Level" for the 1975 450C Crawler Loader owners manual). Different than the fil...

Thanks Bruce, Mine must be at transition time...SN 329552 should be a '79. But, none of the sumps are common (when I filled one of the steering clutches, the other remained dry). I did bleed off about 7 gallons of fluid from the HLR, and it is at the correct level now. I could not find any fill chec...

so finally drained out the HLR fluid and the steering clutch fluid. 4 plugs on the steering clutches. Got almost 24 gallons of milky fluid out of this. The right steering clutch had an uncomfortable amount of goo. The strainer was loaded up with the drier lint stuff. From what I read, the HLR and st...

Amos, thanks for that reminder, which was to self: be sure to put bee helmut on. 15 years ago I stirred up a nest of very large dark colored stinging somethings when I pushed a pile of brush. I got nailed several times in the neck. Since then I've been highly allergic to bee and wasp stings, to the ...

Amos, thanks for that advice. What do you think could be causing the 3rd-4th shafts to spin in that "safety neutral" with HLR in neutral, clutch all the way down, engine at idle? Maybe there is some slight drag on the clutch disk at full engagement, and it needs to be adjusted? 4 speed shifts fine b...

wow Amos, I'm going to try avoiding a white knuckle ride! On my new ranch, the one I acquired the 450C to do work, I've got plenty of rock piles that I need to deal with (maybe 100 loads of 25 tons), plus a hill with a 100foot slope. I'm getting a horrifying vision of me freewheeling down that hill ...

Thanks Stan! Any recs for on-line OEM parts at a discount? The local dealer is inconsistent, there is one counter guy that gives me competitive pricing, and the other guy that makes up for it, including charging me for shipping. Don't want to create bad vibes there, and I can usually plan my parts n...

Thanks Amos! I appreciate the help. The machine came with complete manuals, so I'll start figuring out what to do on the clutch. My neighbor said the tranny fluid looked slightly "cloudy" so we will be replacing that shortly. That brings up another question, the JD manual says "303" special fluid, b...

Hello, and thanks for this forum and its members! I've spend several hours reading enough to know that the 450C is a great machine... Mine is a '79 loader with backhoe and MP bucket...very solid machine, starts on a dime, seems well taken care of. Big pile of records and receipts. Recent UC... My ne...