Major Problem

[DannyV]

Hey guys I had I think the worst or one of the worst things happend to my Yanmar Ym2200 today. I was mowing 4 acres call it the cows field when I got about 2 acres done. All of sudden the tractor started to kinda chug as if the fuel was clogging the lines. I then cleaned all the lines put new fuel filter in and everything to do with fuel. I tried it out and it continued to do the same thing, but I noticed something strange when it chugged down. This only happend when I turned the stearing wheel. LOL yeah sounds funny but when I turned the wheel left it would kinda die down and turned right it would idle back up. Well come to find out the three of the four bolts that hold the steering wheel cylinder on had broken off inside the transmission(Picture Attached). Now I have no clue how they could of broken the entire bolts off at the threads or why it affects the fuel. Maybe it was pulling on something inside the transmission since the whole thing moved when I turned the wheel but didnt notice it untill it was too late. Well if anyone wants to add to this subject or give me some advice what I should do with tractor go ahead and reply.. /forums/images/graemlins/frown.gif /forums/images/graemlins/frown.gif /forums/images/graemlins/frown.gif

 

[Chuk]

I think the best thing for you to do with your tractor now is to sell it to me for virtually nothing because it is obviously junk now. Seriously though, you should carefully remove the remaining stud and most of whatever else is above the
steering box so that you have enough clearance to drill out the broken studs. If you don't have any, try to borrow or buy a quality set of reverse cut drill bits and easy-outs.(the Snap-On set I have cost about 65 bucks 2 years ago.) Oftentimes once the reverse drill bit gets a "bite" in the broken stud the drill will back it out for you. If you are not experienced with doing repairs of this nature you may want to try to get someone who is to try to help out. You REALLY don't want a broken off drill bit or easy-out in there. When all the broken studs are removed just replace all 4 with new ones. They more than likely came loose before they broke off so you may want to investigate why they came loose in the first place. As for why the engine speed changes when the wheel is turned.... mabye the steering column is moving far enough to the side to pinch the fuel supply line? Good luck.

 

[JerryG]

Danny,
Chances are that the reason that the tractor is acting like it is going to die when you turn it one way is because it is loading the engine when you turn it that way. The gears are in a bind in that direction and it is taking a lot of power to turn.

 

[DannyV]

Alright I am off to tear this thing apart and get into the box where the broken studs are located. Maybe it wont be a hard job but I am not looking forward to this cuase it doesnt look like to easy. Hopefully that is all thats broken. I will report in to tell ya what I had found..Wish me luck... /forums/images/graemlins/crazy.gif

 

[Whiskey]

DannyV:

Well allrighty then........GOOD LUCK......

Belive me.......it ain't that hard to rip one down to nuthing, so gettin' to the base of the stering column is a snap. Now gettin' out broked bolts is a whole nutter' matter I ain't good at....

 

[DannyV]

Alrighty Here I am stripped down to base of steering column and can see inside. Now I am about to try to drill out those broken studs, but I have an issue here as you can see by the picture there is some junk and some oil residue in there. My question is Does there need to be alot of oil in there? Nothing is being lubricated and showing premature signs of rust formation on some parts which is never a good sign.

 

[Jagmandave]

Since you're not in a cold climate, why not use some of that liquid grease, like they sell at JD stores?

I agree on the reverse drill bits, they work well. Soak the studs down in some pentrating oil first, then be sure to put a center punch to the stud first, you don't want to go off center with your drill bit and start taking out threads..........

Good luck!

 

[kenmac]

Is this a power steering unit? Isn't that the only way it would load the engine in a turn?

 

[elarson]

Boy those things look mighty flush. No chance that there is something sticking through the inside of the case to grab with vise grips is there? Best of luck to you, I never was able to reliably use an extractor to get out a broken stud or bolt (most of the time they were seized though). Do you know someone who is skilled enough with a MIG to weld a nut on the end of the stud?

 

[California]

</font><font color="blue" class="small">( ...you can see by the picture there is some junk and some oil residue in there. My question is Does there need to be alot of oil in there? )</font>

No.

I think that is the transmission input shaft in the picture. If so, one end goes to the clutch disk which would be destroyed by oil, and the other end goes through an oil seal into the transmission. Minor surface rust in that empty cavity won't hurt anything.