Traction Drive train YANMAR FX24D

[kenmac]

Amazes me how some people are able to dig this stuff up. I can only hope for that type knowledge some day Good work nevis:thumbsup:

 

[GWSMITH]

It is indeed amazing that some people can pull the magic out of an entry from years gone by. I night remember for a couple of days. Unless it goes back to something from 60 years ago, then I will remember some of the really useless info.

 

[nevis]

I bought my F215 in 2006 and Tractor Ernie was very knowledgeable about the F series tractors and very helpful concerning questions I had about this tractor so I always tend to remember posts from him.

 

[GWSMITH]

Winston1 came by today and we loaded my tractor on his trailer to go to Gilmer. The 25 miles over there to work on it in his shop is preferred to trying to work on the ground under a shade tree. Hopefully we can get enough photos and commentary posted to give the next guy a little help.

 

[grainger12002]

kinda nice to be that close and able to tag team it, the ring is probably fine,its the pinion thats the weak part but who knows til you have a close look. Looking fwd to the prognosis....Thanks for sharing gents !!

From CT

 

[winston1]

Here is a couple of pictures after removing the loader, lowering the roll bar and parking her in the garage. Might not have to remove the loader but just not sure how far this tear down is going so I figured now might be better than later. I just took the inlet and outlet to the loader control valve off and put a coupling between them to complete the hydraulic circuit. I'll be posting as we go and welcome any input.

 

[winston1]

Moving along but with a problem. Turns out the problem is the ring gear to carrier bolts have been sheared off plus the ring gear has one broken tooth which renders it useless in my book. Wondering if the tooth might have broke and wedged causing the bolts to shear? The 276 manual Hoye sent doesn't have many similarities with the fx24d. The right axle housing is going to have to come off. As you can see from the picture is is one piece and inside it is the brake drum. I am wondering if this housing can be unbolted and removed or do I have to start removing the outer gear housing? Anybody out there have a fx24d parts manual that could possibly post the drawings of that assembly?

The first picture is showing the axle housing. If anybody out there has drawings or knowledge just how that comes off I'd sure appreciate a holler. The two pictures after that shown the broken tooth on the ring gear, the one looking straight down on the ring gear just showing there are no bolts holding it to the carrier.

Big difference in the fx series from the ym series is the pto gearing is not on the rear of the differential housing. There is not even a cover on the rear. All the pto gearing is in the front compartment of the housing. As you can see by the picture there is a middle partition in the housing.

 

[careyo63]

This may help winston. Looks to be Bolts to the Gear and A Roll Pin in the #4 Spider Gear Shaft. I believe I see the Pin but the bolts ?. Oh here's the axle I believe it's just a snap ring. It may not even be close but worth giving it to you if it helps....

 

[winston1]

View attachment 338789View attachment 338789This may help winston. Looks to be Bolts to the Gear and A Roll Pin in the #4 Spider Gear Shaft. I believe I see the Pin but the bolts ?. Oh here's the axle I believe it's just a snap ring. It may not even be close but worth giving it to you if it helps....

Thank you Carey. That is more than I had. I'm going to go have another look.

 

[winston1]

Thanks to Carey's pictures I got up enough courage to take the axle housing bolts out and sure enough both sides just slide right out of the differential carrier splines. This thing has wet disc brakes. In the picture of the axle housing I just slid out the brake disc a little for picture purpose.

 

[winston1]

Last post of the day. Pictures of the differential and showing the sheared bolts and maybe a better shot of the broken tooth.

 

[careyo63]

Wet Brakes:laughing: Does it have one of them there Chrome Gas Tanks??:thumbsup:

 

[Neat 1500]

Those bolts don't look to be HT? only mild steel. looking at it they all broke in the same spot which leads me to saying I think the bolts are this models downfall as this has happened to many people. Maybe the crown wheels are soft too, breaking a tooth, jumping and stressing the bolts as it takes up again and shearing them off?? many scenarios here......

 

[winston1]

The bolts have a 7 on the head so I assume that is the grade. No matter what they are it took a wham to shear all those. The ring gear is hard enough that a file won't scratch it. Sometimes the more you harden the more brittle something becomes. I think there is a fine line to hit in the hardening process. The pinion gear does not even look scratched. Anybody know where a ring gear is just laying around we would sure be interested. The new set is $700.

 

[grainger12002]

Great pics Winston,I was thinking that the axle hsng might be servicable and congrats for taking a chance and being successful, these are great tractors to work on and its my understanding field serviceable, I wonder what ring gear would match the damaged one you have, perhaps a 970,990 or the like might be the same........keep the info coming-

From CT

 

[grainger12002]

Great pics Winston,I was thinking that the axle hsng might be servicable and congrats for taking a chance and being successful, these are great tractors to work on and its my understanding field serviceable, I wonder what ring gear would match the damaged one you have, perhaps a 970,990 or the like might be the same........keep the info coming-any dimensions on the ring ?number of teeth ?

From CT

 

[Neat 1500]

Only a 7.... I would have expected a lot higher grade than that given its on the ring gear no wonder they break them off.

 

[winston1]

A bit of a mystery has unfolded. The ring gear and differential holder both have 8 bolt holes. There were 5 sheared bolts left in the ring gear, 5 bolt heads and lockwashers found in the transmission sump. Evidently there were 3 left out. No doubt 8 would be stronger than 5. The 3 holes in the ring gear without the sheared bolts all have good threads. Makes me think somebody has been in there before, just hard to imagine Yanmar leaving them out originally. Guess I'll never know.

May be awhile for parts but I will report on success or failure on down the road. Again, anybody with a ring gear or knowledge of where one might be we would appreciate the knowledge.

 

[winston1]

I'm back again. Started to edit my last posting but if some have already read it this might be confusing. In doing a thorough cleaning I came across a complete ring gear bolt and washer. With considerable finagling I eventually found all of the missing 3. Evidently those three had worked their way out because threads are good on all three as are the threads in the gear. Sorry for my constant changing of the story. That is what happens when you get old.

 

[winston1]

Me again! Anybody out there with an FX24D parts manual that would share the pinion/ring gear part number with us would sure be appriciated. Thanks!