B80 rear end (transmission?) is making a grinding noise.

[Junkers88 68]

Ok I've gotten a little farther on the B80 but not far enough to start mowing. Tried to move it today and the big part under the seat, I'm guessing the rear end, is making a grinding noise. I didn't get it to move more than a foot before the noise started and I stopped it. It does roll freely in neutral if that helps at all. I filled it with 80-140 gear oil before I tried it and am hoping that it's just a little stiff in there from sitting for a decade plus.

 

Any help would be appreciated. I do not have the ability right now to get it on a lift and pull it apart.

 

 

Richard.

[pfrederi 17,903]

What did the oil you drained out of it look like ...Clear...chocolate milk color... rusty???

[gwest_ca-(File Mod) 11,104]

Might be worth removing the drive belt guard and see how smooth the bearing is in the idler pulley. If it is OK run it again with the belt guard off. Start the motor with the transmission in a gear because you can't shift into a gear with the guard off with the engine running. The drive belt can make quite a noise if it is close to the guard. Usually repositioning the guard will eliminate that noise.

 

Garry

[stevasaurus 22,882]

Not knowing what is wrong, I don't think I would start it in gear first.  Like Garry said take the belt guard off, but start it in neutral first.  If you still have the grinding, shut it off and we can check it out without starting it in gear.  Remember, do not shift without the belt guard on.

 

Here is a better way to trouble shoot your transmission without doing further damage.

 

1. can you push the horse around with the trans in neutral?

2. can you push the horse around with the trans in gear?

Now put the rear end of the horse on blocks, take off the belt guard and drive belt.

3. when you shift gears, does the shifter feel like you are moving the shift forks into the gears?

4. with the trans in neutral, turn one of the tires in any direction.  does the other tire turn in the opposite direction?  Do the same with the other tire.  Should be smooth and quiet.

5. with the trans in neutral, turn both tires in the same direction.  Is the brake shaft turning now?  It should turn now.

 

Let us know what you find. 

 

Edited November 16, 2016 by stevasaurus

[Junkers88 68]

Thanks folks! To answer one of the questions the fluid that came out was almost entirely water with a thin line of oil on top. I'll try the rest tomorrow if I can before we head out on vacation.

 

 

 

Richard.

[WHX?? 49,192]

Oh oh.... not good Richard...Yes try the other things Steve mentioned and let us know. My crystal ball is broken today but I see a transmission rebuild in your future. Have no fear tho... ..plenty of guys here to help you out and there may be other options. Have a good vacation! 

[prondzy 3,882]

2 hours ago, WHX9 said:

Oh oh.... not good Richard...Yes try the other things Steve mentioned and let us know. My crystal ball is broken today but I see a transmission rebuild in your future. Have no fear tho... ..plenty of guys here to help you out and there may be other options. Have a good vacation! 

Vacation... i thought that was sitting in the garage rebuilding a transmission 

[Junkers88 68]

On 11/14/2016 at 9:23 PM, prondzy said:

Vacation... i thought that was sitting in the garage rebuilding a transmission 

 

I'd have to agree after this little adventure in Las Vegas. There are three things that I truly dislike and have learned to dislike them more as I've grown older.

 

1) Large cities.

2) Large crowds.

3) Drunk people rather individually or in groups.

 

Needless to say but Vegas covered each of those bases in spades.

Richard.