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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

450 C Crawler

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MN Scott

04-07-2006 21:07:12




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I'am going to look at a Deere 450 C crawler with 6 way blade. As I'am new to crawlers I was wondering how reliable these machines are and what to look for besides the normal crawler wear spots. They are listed in Deeres online parts catalog so parts seem to be avaiable if your checkbook is big enough. Are these machines difficult to work on in the transmission final drive area if repairs are needed or are they dealer only like their farm tractors because of Deere's infamous "special tools" requirements that a non Deere citizen can not obtain or rent?

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Roy Suomi

04-08-2006 15:06:55




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 Re: 450 C Crawler in reply to MN Scott, 04-07-2006 21:07:12  
I like the 450-C dozer.. I've worked on them when they were in warranty....That goes back a couple of years.. One of the places you need to look at is the engine frame rails. These rails run from the nose to the steering clutch hosings..They break just in front of the steering clutch housings where the mounting plate attaches to the rail. Under extremely harsh usage [ stumping or falling off the carry-all ]..I haven't seen many have any luck welding or patching these rails. They need to be changed..You can get these aftermarket too.. Watch the steering clutch operation.. C's are wet clutches..With the blade against a pile of dirt, in 2nd gear , high range, both tracks should pull enough to pull down the engine or stall the engine. Tracks should turn , not act as if clutch is slipping. Pull back steering levers and slowly release them, the tracks should power again , not slip.. HLR operation..Clutch pack transmission should be able to be shifted at wide open throttle from reverse to high , or from high to reverse without using the clutch pedal.Most 450's are grossley out of adjustment here so use a lower throttle speed when you try the above speed of shift check..Also look at the clutch housing bolts that go from the outside of engine frame rails into the engine clutch housing. Located just under the front edge of the tread plate steps.If they're loose , there's a problem.....

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JAY IN KY

04-10-2006 10:43:04




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 Re: 450 C Crawler in reply to Roy Suomi, 04-08-2006 15:06:55  
Roy, can you explain further what happens when these bolts get loose, and what causes them to loosen, thanks.



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