Popping out of gear

[bruce1966us]

Sorry that I haven't been logged in and posted quickly as some of you. I have been terribly busy for this time of year and really don't type that well. It is much easier for me to talk on the phone than type the 800 words that are needed to explain this problem.

 

[Doppelgangar]

I got home late last nite and after some more home improve work at home, I took a look at the shift lever guide that Hoye suggested.

I am no expert but it looks pretty worn to me.

Why has that part wore like that? Is it because the lever is traveling too far. is this stopping the gear going right in.

Now if that part is worn then there must be play in the linkage between there and the lever and selector.

What does the ball set in ?

Cardoc you havent seen worn selected forks before Here is a photo of one with one side worn and the other not.

Back to you problem 8 ball.

You need to get those gears meashing correctly that is the gear

moving the full and correct length. As some one has said the main shaft may be warn as the gears have been trying to twist. Moving them the full distance may not move the gear to a non worn part. this wi9ll save pulling the gearbox apart and replacing those parts. Ive done drawings of the basic gear leaver to what it could be like. see were the pins go through the ball and wear in the housing . Have you checked that?

When are we going to get the photos of the top looking from the other direction and in the hole to see if there is 1/2 of the plastic cap on the end.

 

[Car Doc]

"Cardoc you havent seen worn selected forks before Here is a photo of one with one side worn and the other not."

Yes. That one looks perfectly normal to me and isn't even close to 8balls, fork is sitting down low enough in the clutch sleeve and has a slight bit of wear unlike 8balls which has the fork sitting high in the sleeve/gear and offset like it was chewed up by a gear.

I would say your pic is probably just that (normal wear) and not lack of lube and that is from my experience and I have plenty of it which obviously you do as well. I am not trying to start an argument just trying to help 8ball.

I am not going to get into the dynamics of machine turning objects on a center like gears and sleeves that end should be obvious castings are another animal. And dont forget I said right off his problem has a fairly high probability it is in the shift mechanism rather than the bottom end and that a bottom end problem may have started it all before he got it.

We cant see the main or counter shafts so we have no way to know how much wear is in the splines the gears slide on or how much wobble is in the gears. So there is still a possibility that once he drains it and gets a closer look there may be bottom end damage. I wouldn't doubt it but no one can say at this point with certainty but generally when one part wears it wears the other just stands to reason.

 

[clemsonfor]

Bruce just give us a quick hint as to the problem that you think? Bad main shaft bearings, bent fork, adjustment? Just a few quick words just to let us know what your expert opinion is, you dont have to tell us how to fix it just give an idea.

Again, im not trying to run you off, i have spent 30 minutes reading this and trying to understand everything i just would like to know.

 

[Doppelgangar]

the wear on he front fork is 20 thou. orginially it was .280 inches and now it is .261.

the gearbox was not parted out due to the wear in the forks but for the gears which were good.

Back to 8ball's problem and from the photo the gears atr not meshing fully.

there is a photo of the hardening been warn off the gears in this photo.worn gear photo

If you take note the pitting due to the hardning been worned off is in the centre and not on the leading and trailing edge of the gear. In 8Ball's photo it shows polishing on the leading edge of the tooth. as this is a strait tooth gear the were should be only in the centre of the tooth.

The reason is the gear is not moving all of the way into gear.

To fix the problem is not replace all of the parts until the gear is meashing correctly but to find why the gear is not going into gear correctly.

He may have pulled out or disasembleed the faulty part but as he doesn't know what he is looking for so he has not seen if there had been an error in the previous assembly.

there are ways to check to see if the assembly is wrong and checks that he can complete to make sure he assembles his tractor correctly.

 

[bruce1966us]

Bruce just give us a quick hint as to the problem that you think? Bad main shaft bearings, bent fork, adjustment? Just a few quick words just to let us know what your expert opinion is, you dont have to tell us how to fix it just give an idea.

Again, im not trying to run you off, i have spent 30 minutes reading this and trying to understand everything i just would like to know.

The gear with ... Ears on the side... Needs to ne replaced. Hard to explain and I can.t load pics. But I do know how to fix it.

 

[careyo63]

Maybe I can Help you out Bruce. 8ball posted some Pics. of his gears on Hoyes Tech Sup. what a mess. I was Lucky to find them. Wait until Aarons see's all that AGAIN!!! I believe It was Norm that commented on the Third one from the left. Hopefilluy it's here and we may help him resolve the problem. If what parts he ordered Won't or Doesn't fix it. He stated it will be a few days until he will be able to get back to it So lets see if we can make sure he's well prepared and has everthing he needs and is well informed of what may be involved. If it's not here. let him know what he will need to do Drain the Hyd Fluid and get another pic. etc.

 

[clemsonfor]

The gear with ... Ears on the side... Needs to ne replaced. Hard to explain and I can.t load pics. But I do know how to fix it.

Thanks thats all i was looking for. I prolly wont have to fix it my self, but just a quick blurb bout the problem is you think. I dont really think you have to post a long synopsis of it. If car Doc or some other mecanical expert wants to elaborate they can now that an experienced person has clued us in.

I know its hard enough to explain how to load pics on this site let alone split and dissassemble a tractor transmission.

 

[Car Doc]

the wear on he front fork is 20 thou. orginially it was .280 inches and now it is .261.

the gearbox was not parted out due to the wear in the forks but for the gears which were good.

Back to 8ball's problem and from the photo the gears atr not meshing fully.

there is a photo of the hardening been warn off the gears in this photo.worn gear photo

If you take note the pitting due to the hardning been worned off is in the centre and not on the leading and trailing edge of the gear. In 8Ball's photo it shows polishing on the leading edge of the tooth. as this is a strait tooth gear the were should be only in the centre of the tooth.

The reason is the gear is not moving all of the way into gear.

To fix the problem is not replace all of the parts until the gear is meashing correctly but to find why the gear is not going into gear correctly.

He may have pulled out or disasembleed the faulty part but as he doesn't know what he is looking for so he has not seen if there had been an error in the previous assembly.

there are ways to check to see if the assembly is wrong and checks that he can complete to make sure he assembles his tractor correctly.

I wasn't trying to start an argument but reading some of this is ridiculousness your point is what? You proved you can post a few pics of a trans torn down with a fork with normal wear and a gear with metal fatigue 8ball doesn't have metal fatigue that is visible and his forks are not normally worn.

His trans is a non-syncromesh the polishing on the leading edge is the machined in taper the 2 gears use to engage each other and is perfectly normal. I dont see one single thing wrong with how the gears have worn in.

Sorry man but IMHO you need to stick to whatever it is you really do. I am stepping out of this discussion my boots are not tall enough so go for it doppelganger its all you! :laughing:

 

[Doppelgangar]

Looking for some help, I've posted on Yanmars boards, but really need advice.
the only gear that worked was 1st and reverse was in the neutral spot... help. Pics of gear box and forks below. Are the forks suposed to move easily up and down the shafts? ................................................
sorry I am completely clueless when it comes to mechanical stuff.

Good to see that you want something fixed that is not going to cost you anything, except time.

You made a mistake and every mechanic will do what you have done some time in there career. The mistake you made is you didn't check to see if it was right before you went back to work.

In the Pic below you will see the gears as they were when you were driving in first gear.

When you stopped and put the gear into neutral the reverse gear was in the wrong place. the gear was set as it is now in its place for reverse gear.

What happen is when replacing the top the selector missed the reverse gear.

When you replace the top you will need to make sure that the selector and gear are in the right place.

Cost .............. only your time your wife will say that is worth lost of money.

If you are not going to supply more info to see if there is other damage to the Hi - low gear selector you could try working in the low box in the higher gears. that will also protect the weekest gear in that box, first gear.

Still first and third gear are not fully engaging and if left they will fail.

Before replacing the top make sure the gears are in the correct place.

after top is in place make sure all gears are doing what they should.

Test the gears with tractor at idddle. Reverse, first second thitd forth and then forth third second fitsr and reverse. If the tractor moved then the gears are correct. if the motor stalls then you have misted one of the gears.

If you get pissed off with checking take a break and come back again.