Foward Reverse is backwards

[Snell]

Go to your local dealer and have him look up service bulletin #SB95-06. It's even labeled, appropriately enough, "Tractor moves opposite to the direction of the HST pedal". It describes how the retaining pin for the swash plate in the hydro can break and cause the symptoms you're describing, and it means splitting the tractor to remove the HST. An experienced tech should be able to do the job with 5-7 hours and less than $50 worth of parts. Hope this helps....

 

[MaltbyMower]

That sounds exactly correct. It has been in the shop since Monday. They said they could have someone look at it Thursday morning. Now I wish I would have split it in my garage!

 

[Anonymous Poster]

You might also want to consider seals and relief valves internal to the HST unit itself. A schematic I saw showed 6 relief valves inside the unit. There is also a charge pump which maintains pressure to the actual HST variable pump & motor system. When the charge pump ran backwards, the suction action on what is normally the pressure side, may have pulled part a relief valve or sucked in a seal. This would prevent the charge pump from maintaining pressure in the HST casing and may be part of the reason for the tractor only moving a few feet before bogging down.

Hope this comment helps.

 

[MaltbyMower]

I don't think my previous post conveyed my appreciation for your help. I don't offically own this tractor yet as I am swapping my uncle for 2 landcruisers. If it had broke down AFTER the swap, I don't think I could afford to run it over to the dealership. Its nice to know that I have a great fountain of info to draw from!

Thanks again,
Brandon

BTW, Sound Tractor cracked into it today so I should be able to confirm your diagnosis by next week. While it was in the shop I got some tractor time in an L series, full cab and FEL, AWESOME TRACTOR!

 

[MChalkley]

<font color=blue>I am swapping my uncle for 2 landcruisers</font color=blue>

Pity you couldn't get 3 landcruisers for him. /w3tcompact/icons/laugh.gif Sorry, I couldn't resist.

Most of us here have found TBN to be a tremendous resource. I certainly have.

 

[Pks]

I agree. Three cheers to TBN.

 

[Anonymous Poster]

Get ready to spend about 2000 dollars on the hst. That is what it cost me last summer to have the hst repaired on my b7200hst. There is a company in calif. that rebuilds the hst. He wanted about 1100 for rebuild. I do not the name of the place but the phone # is 909-784-8423.

 

[MaltbyMower]

Kudos to Snell, he nailed it.

Sound tractor reports that the B7100 had a retaining pin that was too short. The mechanics said the pin was sheared. All they can do in put in the longer pin. Now I have to wait a week for the gaskets to come in, and I might have my first tractor!

Thanks again!

 

[MaltbyMower]

Tractor arrived today, bill, 899.13. Wish I could have done it myself.
Dad arrived today, 9 years selling kubota tractors, 85,6 & 7, #1 dealership in the US in hehaw, Yakima, WA. He told me not to buy the small kubota. Suggests a 35 massey or larger 2 wheel drive tractor, (less $, more weight, better ulitilization.)
Tonight, we hooked up the 5 foot rear blade. Had a fresh inch of snow. Zip, zop, driveways clean. Great fun.
BTW, he is holding a gun to my head has I type this, wish he knew how to type

 

[jasonf]

Not to argue with your dad, but I wouldn't buy a tractor unless it had 4WD. Had an old International B 414 and while it was a great tractor the 2WD issue presented itself many times.... Just a thought......