550G will not move

tnturkey · Post by **tnturkey** » Sun Dec 18, 2011 6:53 pm

Ok, guys don't beat me up too bad. I am the middle man here, My dad has a 550G and the steering clutch us out of adjustment (according to him) he is out in the woods and the dozer is locked up. It will start but when shifted into gear,( dosen't matter forward or reverse) it will not move. He just changed the filter, which one I don't know. You all have any ideals what the problem coud be. After a few answers, maybe tomorrow night, I could get him on the phone and we could answer some of your questions to help better understand when, where and what started this problem.

I Should get him a laptop and internet for Christmas :

digitup2 · Post by **digitup2** » Sun Dec 18, 2011 8:37 pm

Well there are several questions that come to mind#1is it a power shift or a torque converted unit? #2 Is it locking up or just not engaging you make it sound like he had trany issues so he Then changed the filter? #3is it the steering or the drive locking up or just not re engaging ?#4What were the lead up symptoms to this? #5how many hours are on this dozer? #6 is there a transmission pressure guage on it ?.I know only one man can answer these questions but do what you can.Those G series were the best thing Ma Deere built yet so they are fairly bullet proof old beasts .My Hs and Js never were and are not as good a machine I had 6 ,550Gs a450Gand 2,650Gs that never were seen nor touched by the dealership after I got a hold of them they are a great dozer .Digitup. P.S.get him a lap top and get him on here!

tnturkey · Post by **tnturkey** » Sun Dec 18, 2011 8:57 pm

Question #1 Power shift
#2 Not engaging, if you pulled back on the cluth on the left side (slight Pressure) it would engage but will not do nothing now.
#3 Not re-engauging
#4 not engauging would work as long as you keep pressure on it
#5 1500-2000 hrs since transmission was rebuilt
#6 Just a buzzer light.

I just called him, he said hw tought it might be a valve problem.
Would re-building the valve body change anything?

digitup2 · Post by **digitup2** » Mon Dec 19, 2011 6:41 am

Se if someone has played with the setting first .It could be a bad valve.Digitup.

tnturkey · Post by **tnturkey** » Mon Dec 19, 2011 12:33 pm

Do you have a website where I could order a manual for the 550G?

tnturkey · Post by **tnturkey** » Mon Dec 19, 2011 6:41 pm

Any Help on where to find a manual?

Tigerhaze · Post by **Tigerhaze** » Mon Dec 19, 2011 8:04 pm

You can order manuals directly from Deere in a variety of formats here- suggest that you get at least the service manual:

https://www.johndeeretechinfo.com/index ... chFor=550g

You can find the parts diagrams online here (search for 550G):

http://jdpc.deere.com/jdpc/servlet/com. ... ervlet_Alt

tnturkey · Post by **tnturkey** » Tue Dec 20, 2011 5:30 am

Thanks!!! I was looking all over for that page, but for some reason that would not load for me, your link works great!!! Thanks again.

digitup2 · Post by **digitup2** » Tue Dec 20, 2011 7:39 am

You could have a broken left hand steering valve .The spool could be broken inside the valve unit ,This is where you don't diss assemble unless you are in a clean environment but like one other on here the symptoms are much the same.I have had several steering and shifting spools break just not on G series dozers.When they break the go closer to the bottom of the barrel,If it is in good shape put new o rings on it if it broke then replace the valve unit I know that sounds expensive but it is for the best .Digitup.

tnturkey · Post by **tnturkey** » Tue Dec 20, 2011 1:09 pm

Would the broken left hand steering valve keep it from moving forward or backward. The Dozer will start up and raise the blade up down side to sie, but the tracks wont budge either way. I will let him know tonight. Thanks for you help.

digitup2 · Post by **digitup2** » Tue Dec 20, 2011 3:19 pm

If it was broken and lodged in the right place the break for that side would be on. yes.Digitup.

tnturkey · Post by **tnturkey** » Wed Dec 21, 2011 4:35 pm

But neither side will move, its like the dozer is stuck in neutral. We are going to check them out as soon as this rain quits. We might have to get the 350 out and pull it up to higher ground. LOL Thanks this forum has been a great help so far.

digitup2 · Post by **digitup2** » Wed Dec 21, 2011 6:04 pm

If you are lucky you can get it out of the bush with the 350,your forward /reverse clutch pack has went out .It may be a job getting that dozer out of the bush with the little 350

KenP · Post by **KenP** » Wed Dec 21, 2011 6:48 pm

deleted

tnturkey · Post by **tnturkey** » Wed Dec 21, 2011 7:04 pm

Its not in the bush really, we were building a pond. It's in a clearing just need to pull it out of the water, about 30 yards. Between the 350 pushing and the backhoe pulling with the back bucket, we might be able to move it. Just need to get it out of the water/mud..... mud is only about 4 inches deep and solid ground.

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550G will not move

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