Traction BX-24 Transmission Failure??

[jgiacchi]

My BX-24 with 690 hours appears to have a failed transmission. All service has been done at the required intervals. The rear wheel drive doesn't work in either low or high, I have no brakes, and the differential lock doesn't appear to do anything. The front wheel drive, hydraulics, power steering, pto's and 3 point lift all work fine. Does anyone have any ideas on exactly whot broke? How about a guess on what a transmission rebuild or repair should cost?

Thanks,
Jim

 

[timswi]

Sorry to hear that...it does seem odd that the front drive works...Doesn't sound like a total trans failure.

There have been some here who have found problems with adjustments etc on HST's..I'm sure one of them will chime in...Good luck.

 

[jgiacchi]

Thanks, I don't have a handle on how the trans works, but I found it even odder that the brakes also stopped working.

Jim

 

[timswi]

Thanks, I don't have a handle on how the trans works, but I found it even odder that the brakes also stopped working.

Jim

I'ts a "wet" braking system. The brakes are internal. Not sue why they would quit, or what that would have to do with this.

The parking brake isn't stuck on?

It won't move in 2wd, but will in 4wd?

 

[jgiacchi]

Hi, it moves in 4WD but has no power to the rear wheels. If I stop on a flat surface and switch to 2wd the tractor will roll freely if I give it a push, even if the parking brake is set. It does the same things in Low or High speed.

Jim

 

[KennyV]

It is not a transmission problem...
I'd bet that the brakes work when you have it in 4 wheel drive. KennyV

 

[jgiacchi]

KennyV, good call on the brakes. I locked down the brake pedal, put the tractor in 4WD and it wouldn't move when I pushed the forward or reverse pedal. So if it's not a transmission problem why don't the rear wheels have drive power, in 2WD or 4WD?

Jim

 

[BXpanded]

It's a differential problem. It's not the transmission. It's probably a broken spider gear since the diff lock doesn't help and the front drive still works. If it were a broken axle the diff lock would make it go. The brakes are upstream of the differential. A single brake set stops the drive into the differential.

 

[jgiacchi]

Understanding the power train a little bit better a bad differential/spider gear makes a lot of sense. I'll raise the rear wheels and check the various interactions between the tire rotations and the differential lock. I'd expect everything will rotate independently with a bad differential. From the parts diagrams it doesn't look to difficult to remove the rear end and pull out the differential to work on it. Anyone have any opinions about a do it yourself job?

I'm also thinking the $100 or so for the service manual would be a worthwhile investment. Any opinions.

 

[Yankee Clipper]

JG,

I would suggest not to do your own work as the complete transaxle has to come down and the front cover removed and then the case is split.

There are many, many small parts that or will fly out when you have the case split and even when exercising caution, you may lose a detent ball that you won't miss until you reassemble it to the chassis.

I would say take it to a dealer who knows BXs and tell him what you think it is and ask for a quote.

Good luck!