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550 hydraulic drift

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Phil Sutton

12-20-1999 10:19:46




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I noticed the previous article on 550 hydraulic drift answered by Mongo.
My 550 does the same thing and I have been using detergent oil. Is this a common problem because of foaming?
Also -- where is the filter? Mine is the newer 550 with the fiberglass front end.
I noticed that I don't lift the brush hog very far off the ground and it cycles up and down. Hopefully this will help me also.
Also, while I am on the subject - what do most of you use for the upper link on a bush hog. I was using a solid piece until someone told me to use a chain. Now I understand there is a possibility of something kicking the bush hog up in the air causing damage.

Thanks, Phil

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Mongo

12-22-1999 09:32:02




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 Re: 550 hydraulic drift in reply to Phil Sutton, 12-20-1999 10:19:46  
The detergent type oil will foam and we all know, air will compress alot more than oil will. You will need to flush the system a few times with non-detergent oil to remedy the problem. If you use the center plug on the R side where the remote valve bolts on and a 5 gal bucket, it will leave about a pint or better of fluid when the flow stops. I get everything in place and then start the tractor and catch the oil in the bucket. When the flow stops, turn off the tractor and add a quart of non-detergent oil. Restart the tactor and again immediately turn it off when the flow stops. I do this 2-3 times. The filter is in the cylindrical object that has a hex pattern on the end of it just infront of the seat. Use the hex to unscrew the cover, replace the filter after soaking it in oil, and tighten the cover. Once again run a quart or two through the system as done before, then plug the system and refill. Cycle the lift up and down a few times and it sould be considerably more quiet than it was with the detergent oil in it. I don't know what the maintainence schedule for this is in the book, but I do mine every spring to ensure all the condensation from cold weather operation will be removed. It will also pay to do the gear oil in the transaxle as well. There isn't anything in there that can be replaced for the same price as 5 gallons of oil. To do that, there are 3 drain plugs on the bottom side of the transaxle. Remove those 3 and the plug beside the PTO shaft in the rear. Once drained, replace the 3 bottom plugs and fill with the oil of your choosing. Once again, there is no advantage in using detergent oil, but it won't be a problem as in the hydraulics. 5 gallons should fill the rearend. You fill it until it comes to the level of the plug by the PTO. No boot cover is good enough to keep all water, dust and dirt out of the trans. Your tractor will love you for it.
And unless you want someone else inheriting this well maintained tractor, that chain needs to be replaced. I have the same hilly situation here in southern Indiana. We farm where the last glaciers bulldozed all the rubble infront of them. I have a Woods M5 mower I bought second hand at auction for $300. The brace to the top link has the ability to pivot and allow up and down movement but will prevent it from coming up to visit unwantedly. Good luck to you.

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jeff

12-22-1999 09:12:23




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 Re: 550 hydraulic drift in reply to Phil Sutton, 12-20-1999 10:19:46  
my brushhog has a 6" long slot in the
top
where the top link mounts
this gives you some play over hilly ground.
works good on mine.
dumb question but i've never heard about chain
top links being a problem ct even sells them for brush hogs.
are the brushhogs actually flopping up on the lower pins and flying into the operator?

jeff



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Mongo

12-22-1999 09:37:32




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 Re: Re: 550 hydraulic drift in reply to jeff, 12-22-1999 09:12:23  
That is a possibility. You don't hear about it much because those who had it happen aren't around to tell about it. Selling one would make as much sense as selling patches for your exhaust or brake system. They do sell them...doesn't make the situation "safe", but they sell them.



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Pete in Ks.

12-21-1999 06:44:03




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 Re: 550 hydraulic drift in reply to Phil Sutton, 12-20-1999 10:19:46  
Using a chain top link on a rotary mower is asking to make your wife a WIDOW! I cannot state it simpler than that. NEVER sacrafice safety for convenience.



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Phil Sutton

12-22-1999 06:23:11




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 Re: Re: 550 hydraulic drift in reply to Pete in Ks., 12-21-1999 06:44:03  
With the farm being in the Ozarks, I can't even find a level place to check oil level. The brush hog binds the top link when going into a dip or valley actually ruining the top link, and is off the ground when going over a hill or ridge.
Then again, I know of two farmers within a 5 mile radius that have been killed brush hogging.
Maybe there is a way to get a little up and down play with a combination of a couple of chain links and a solid top link and still be safe.

Phil

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Pete in Ks.

12-22-1999 09:07:31




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 Re: Re: Re: 550 hydraulic drift in reply to Phil Sutton, 12-22-1999 06:23:11  
Phil, I don't know your conditions, but would say that a 3pt mower is the wrong piece of equipment for the job. You might consider trading it for a tow behind rotary that attaches to a drawbar. There would still be some safety issues to be aware of, but the threat of wearing it as a backpack would not be as great.



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Copper Cowboy

12-20-1999 21:36:39




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 Re: 550 hydraulic drift in reply to Phil Sutton, 12-20-1999 10:19:46  
Yeah, Phil, connecting the solid toplink to a bush hog or mower is just asking for trouble. Especially if you're on hilly terrain or cutting ditches. You can use a chain toplink, I use stablizier chains from the lift arms to the toplink pin and no toplink. The mower stays level and true.



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