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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Spring cleaning + servicing

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Case450

04-28-2007 20:34:28




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My case 450 crawler loader is in the garage waiting for me to pick up new air, oil, fuel + hydraulic filters.
After I cleaned 'er up real good I thought I'd bring both tracks to the same amount of slack as the left side is more loose then the right. It happened right before we parked it for the winter. I think it got slack from breaking in or whatever as its a new undercarriage including the tensioning unit. I haven't found any signs of leaking anything on the undercarriage before and after I cleaned her up. I took the grease fitting off of the right track so it would slacken up a bit but nothing happened. I then wedged a bar in a hole in the pad which went through the center of the chain and wedged another bar the same way at the top of the track just before the rear sprocket and hooked a come along to both bars to get the idler wheel to back up and give some slack in the chain. It didn't budge. Am i not setting up the come along right to get that front idler back? I am not sure how to set the track at the right tension to be honest I was just trying to copy the slack that was on my neighbours komatsu bulldozer (he has a construction company and has been doing it for over 30 years). Any ideas would be helpful. Thanks fellers.

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Case450

04-29-2007 16:26:10




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 Re: Spring cleaning + servicing in reply to Case450, 04-28-2007 20:34:28  
Thanks for the info man. Awesome, I'll get her all set right in the morning. I only removed the grease fitting so that there is what I must have been doing wrong. I'll take that nut out that holds the fitting and get it to teh right slack. I'm not sure exactly what model I have specifically but my machine has two hydraulic filters too. I've removed all the filters to take straight to the Case dealer for replacement and I will catalogue the numbers when I get back. I've covered off all the openings with super 6 (6 mm) vapour barrier and zip ties so no weather gets in. By the way, my muffler is rotted off, can I cut off the part of the muffler pipe with all the perferated holes in it and straight pipe it? Or would that be awful loud? She's never been a real quiet machine.

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JFoshee

04-29-2007 22:01:29




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 Re: Spring cleaning + servicing in reply to Case450, 04-29-2007 16:26:10  
When I bought mine it had a stub bolted to the manifold about 3 inches long and a glass pack (like goes on a car) for a muffler. I tossed the glass pack, removed the stub, and replaced with a vertical muffler from Case Part #D35106, about $78.00. I did have to elongate the hole in my hood just a little, but it bolted right up to my manifold. The bolts in your manifold will most likely break off. Don't sweat it. It's nothing a sharp drill bit and a tap won't fix. I drilled the outside hole on mine all the way through and put a nut on the bottom. You can't do this on the inside hole because it goes into the manifold. It must be tapped. I think I tapped to a 3/8. Don't forget to order a gasket with your muffler, G46853, and on your way home, stop by the muffler shop and have them cut you a short piece of exhaust pipe to fit the muffler. I had them put a 90 degree bend at the top of mine to keep rain out. With all this said I still wear ear plugs when running mine cause it's still a little loud. Hope this helps.

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Bob Plumadore

04-29-2007 06:48:22




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 Re: Spring cleaning + servicing in reply to Case450, 04-28-2007 20:34:28  
First be sure you rave lossened the right fitting. Place a pin, the draw bar pin or a big pry bar in the top sprocket tooth and back up a few INCHES.



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JFoshee

04-28-2007 22:06:05




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 Re: Spring cleaning + servicing in reply to Case450, 04-28-2007 20:34:28  
I relieve track tension by putting a block between the blade and the front of the track. Have a buddy available to work the blade for you and positioin the block about center ways of the idler. Once your buddy gets a little pressure on the block stand back just in case it splits or pops out. If you have the track adjuster plug out,using the blade to push the track back should work. As for the proper amount of tension I think most people grease the track adjuster every morning when they grease their machine because I see an awful lot with the tracks banjo tight. Find a straight board or a long prybar that will reach from the idler to the top roller. Lay this bar on top of the tracks while pumping grease in. When properly adjusted the distance between the top of the grouser clete(track pad) and the bottom of the bar should be between 1 1/2" - 2" at the deepest part of the sag. When you think it's O.K, jump on it to take out any slack and recheck. F.Y.I I don't know what model 450 you have, but mine offers two hyd. filters. The dealer couldn't tell whitch one I had until I removed it out and took it to him.

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JFoshee

04-28-2007 22:57:26




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 Re: Spring cleaning + servicing in reply to JFoshee, 04-28-2007 22:06:05  
I hate giving out wrong info so I need to correct myself. I checked my manual and the correct track sag for the 450 is 1" - 1 1/2". Sorry. Also, make sure when you release the track tension you are removing the track adjuster plug and not just the grease fitting. The plug takes about a 3/4 or 13/16 socket as best I can remember. The grease fitting will be a 7/16.



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