B7100 Gear Drive, Taking apart transmission.

[sitdwnandhngon]

Okay, last question for the night, I have been saving them up for a bit before joining.

The B7100 I bought is a gear drive, and it growls in 2nd and Reverse. I popped the cover and found the center gear on the 2nd/Reverse shaft was pretty torn up, the ones that mesh with it seem fine for some reason (I think the PTO drives off it in one speed also)

I ordered the new gear, should be here this week, and I want to get it installed ASAP because I have a back blade for snow this winter and I need it to be able to handle a load in reverse.

The shop manual isn't very helpful, it just says "Disassembly is apparent". It looks like I can split the tractor at the front of the transmission, remove the front drive shaft and anything else keeping it from separating and then i should be able to remove the inner circlip and slide the shaft forward.

Is this correct? Or will it require me to remove the axle also?

 

[CaveCreekRay]

Takes loads of "before" and "after" pictures as you disassemble. Close-ups and details from both sides of the gearbox.

Those pics will make more sense than any MSM.

 

[sitdwnandhngon]

Okay, tractor is split, cover is off transmission and all nuts are removed from the studs that hold the transmission to the rear axle housing.

I can't get it to come off.

Is there a hidden bolt or nut somewhere? I can't see anything in the service manual, and it feels like the seal is broken, I just can't get it to slide out.

Anyone have a trick?

 

[007kubotaguy]

I think you will find two more bolt at the top of the transmission.
Good Luck Lance

 

[sitdwnandhngon]

I did find two more this morning, under the lift arm cover.

Now a new problem presents itself, I can't get the thing apart.

There is no mention in the manual about having to use a case spreader, but it seems like the hi/low range rail is keeping everything held together, and it looks like it sits into two recesses.

This is becoming slightly annoying.

 

[sitdwnandhngon]

All done.

I have to say that it was difficult to disassemble that transmission.

At least pulling the 2nd/Reverse shaft was. I had to make my own special jaws for the puller to get the case bearings out on the front side as I didn't want to smack them with a hammer.

Everything is back together now though, and it sounds like a brand new tractor in 2nd and reverse, it was a well needed fix that I think was overlooked last time the transmission was pulled. It seems like all the gears showed very acceptable wear except that one. My guess is they fixed a few of them and said screw it on that shaft.

 

[Snowfeet]

All done.

I have to say that it was difficult to disassemble that transmission.

At least pulling the 2nd/Reverse shaft was. I had to make my own special jaws for the puller to get the case bearings out on the front side as I didn't want to smack them with a hammer.

Everything is back together now though, and it sounds like a brand new tractor in 2nd and reverse, it was a well needed fix that I think was overlooked last time the transmission was pulled. It seems like all the gears showed very acceptable wear except that one. My guess is they fixed a few of them and said screw it on that shaft.

Did you end up pulling the rear axel?
I’ve got a forward/reverse gear fork to replace and not having luck getting the trans split to install the new one

 

[Brodie]

Did you end up pulling the rear axel?
I’ve got a forward/reverse gear fork to replace and not having luck getting the trans split to install the new one

I did find two more this morning, under the lift arm cover.

Now a new problem presents itself, I can't get the thing apart.

There is no mention in the manual about having to use a case spreader, but it seems like the hi/low range rail is keeping everything held together, and it looks like it sits into two recesses.

This is becoming slightly annoying.

Did your fix work ? Can you show me what the B7100 2nd /reverse centre gear looks like for ordering plz...best to get new needle rollers also ?

All done.

I have to say that it was difficult to disassemble that transmission.

At least pulling the 2nd/Reverse shaft was. I had to make my own special jaws for the puller to get the case bearings out on the front side as I didn't want to smack them with a hammer.

Everything is back together now though, and it sounds like a brand new tractor in 2nd and reverse, it was a well needed fix that I think was overlooked last time the transmission was pulled. It seems like all the gears showed very acceptable wear except that one. My guess is they fixed a few of them and said screw it on that shaft.

Have 2nd /reverse growling problem... could you kindly post a picture of centre gear on 2nd gear shaft...to make ordering more certain...good to change needle rollers also. ?