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CASE 450D Crawler

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Rick Goodin

05-24-2002 12:30:22




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Over the past winter I purchased an early 70's case 450d which required eather to start on every occasion. The previous owner said he only had to eather it to get it started but I found out once I got it home it needed eather even after it was warmed up. Part of the problem was a bad starter and manifold heater. The dozer has set for a few months and now it will not start at all even with eather. There was evidence of a deisel leak around the injector pump so I assumed I have gotten air in the line. I attemted to bleed the lines but am not 100% sure as to the best way to do this. Should they be bled from the outlet side of the injector pump or from the very end of the line where the line enters the head? I opened the return line for some time and got plenty of fuel. Though it was hard to start, it ran fine when I last used it. Any information would be greatly appreciated. Rick G

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R Goodin

05-28-2002 05:44:09




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 Re: CASE 450D Crawler in reply to Rick Goodin, 05-24-2002 12:30:22  
I got the 450 running over the weekend by bleeding the lines to the injectors. Somehow it got air in the lines while it sat. I have also replaced the fuel filters just in case and only had to use the ether when I first started it after bleeding the lines. I worked it for a couple of hours and shut it off and started it multiple times. It would take a couple of short cranks but would eventually start every time. I have had a couple of guys tell me that a deisel can get "hooked" on ether. Does anyone know? If so,what can be done? Rick G.

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Max

05-30-2002 08:43:02




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 Re: Re: CASE 450D Crawler in reply to R Goodin, 05-28-2002 05:44:09  
If its an early seventies style 450, then it has a Delco starter. The best starter for these is the nympho(Nippondenso) starter. The Case will sound like a chrysler product but it will start a lot easier. The nympho starter spins the engine over faster thus making it easier to start. I had seen the ol' Delco pull close to 400 amps when the outside temp gets down to 50 degrees F and the nympho equipped units start when the temp gets down to 15 degrees without ether, but the fuel was a 50/50 mix of #1 and #2. As far as getting hooked on ether, I guess that would be another way of putting that the engine is wore out. Problems to remember about ether is that when used it is hard on the starter and starter gears(both pinion and ring) and the either washes down the cylinder walls which adds to premature wear. My advice is to use the either as a last resort to start. Just keep the fuel filters clean, use clean fuel, and work the engine hard which keeps the carbon off the injectors and that little engine should start every time. By the way, if the 450 is in the early seventies with a manifold heater, it should be a 188 engine and the model is a straight 450. Later versions of the 450 had the 207, but without the manifold heater.

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D. Mosey

05-25-2002 06:56:50




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 Re: CASE 450D Crawler in reply to Rick Goodin, 05-24-2002 12:30:22  
Check the filter screen on the low pressure side of the inj. pump. It is located just underneath the fuel line in to the pump.

Change fuel filters lately?

Do you have spin-on filters or cannister?

There are several other posts about this very problem. Check out CASE 450 in the archives and you'll get more in-depth advice.

You'll get back runnin again, just hang in there. My 2 cents worth... good luck to you.

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Robert in W. Mi.

05-24-2002 15:25:24




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 Re: CASE 450D Crawler in reply to Rick Goodin, 05-24-2002 12:30:22  
My Case 450 only needed ether to start when the batt. was weak and it was in the winter. With a good batt. even in the winter it NEVER needs ether!! I think you have a deeper problem that needs to be adressed. Like, low compression? Bad injecters? Low cranking speed?? They are a great dozer, and i hope you get yours figured out! Robert



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