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DaveCraw · 07-26-2011, 05:04 PM

I have an older Troy Bilt Horse #225707. Last month, I needed to replace the fiber reversing disc because it was beat up pretty bad; I believe that I have only put 4 reverse disc on the unit in 35 years. Before I replaced it, I checked the owners manual about assuring that the top & bottom pulleys "floated" to assure that the disc would be evenly centered. Now after less than one month, the new disc is developing very bad wear (evenly on both sides) & is chipping. I have made sure that the reverse disc is not hitting on the upper pulley when in forward &, as I said above, the disc is centered in the lower pulley when engaged. Can somebody there tell me what is the problem & how to fix it? I don't want to spend another $65 for a new disc & get the same wear problem.

**jhngardner367** · 07-26-2011, 05:17 PM

Can you post a pic or two,so I can see how it's wearing? It may help in diagnosing the problem.

DaveCraw · 07-26-2011, 05:25 PM

Sorry, no digital camera. It is wearing badly but evenly after only & chipping after one month of use. As I stated, the disc seems centered in lower pulley when it is engaged & the lower pulley "floats". Don't know how much "float" Troy Bilt expects 'cause the owners manual does not specify.

**jhngardner367** · 07-26-2011, 08:34 PM

Let me check with Troy-Bilt,and I'll get whatever info I can,for you.Probably some time tomorrow evening. I haven't had a problem like this on any I've had in my shop,so it'll help me ,as well!

DaveCraw · 07-27-2011, 08:27 AM

Good luck with Troy Bilt!! I've been trrying to get somebody there to answer for over a week. I will await your findings.

DaveCraw · 07-28-2011, 03:11 PM

Any luck getting info fromTtroy Bilt??

**jhngardner367** · 07-28-2011, 04:05 PM

I don't know if this is right,but they say it has too much tension on it.I'm more inclined to believe that the disc is defective.I've got one other source,but he hasn't gotten back to me yet.

DaveCraw · 07-28-2011, 04:28 PM

Another gentleman suggested I check the main shaft end play. I did & found that I needed to add a .010 shim to the rear bearing; there was about .030 of end play where Troy Bilt wants .005 - .015. I also checked to be sure that the disc was not hitting the lower pulley when in neutral. Since that adjustmant has not been touched since tiller was produced in 1977, I adjusted that up a little. The disc I bought was an OEM Troy Bilt from Jack's Small Engine in MD; I have had zero issues with parts from them so I've got to believe the disc was not defective. I will await more info from you.

**jhngardner367** · 07-28-2011, 04:54 PM

Tom (the other source),just got back to me.He says that the disc is rubber-rimmed,or should be,and there's an update kit #GW1919,that includes the 3&7/8 "adjustment block.Price is $48.67. He states that if the adj.block is worn,it increases the wear on the disc. Does this sound like it's correct,to you?I usually get units that are totally abused,so I replace the disc/block at the same time.Hope it helps.

DaveCraw · 07-28-2011, 04:58 PM

My tiller uses the fiber disc, not the rubber-rimmed unit. It was made in 1977, way before the rubber ones came out. I believe that I stated that fact in my original request fo help but could be wrong.

**jhngardner367** · 07-28-2011, 04:58 PM

Yes, the end play can cause it,or part of it. Jack's is a reputable company,so stick with them.They may have a tech available as well.

DaveCraw · 07-28-2011, 05:01 PM

Is this other gent (Tom) suggesting that I could upgrade to the rubber rimmed unit? I was told that there was no kit to do this with original fiber disc units. Have you checked this out with your Troy Bilt source? I don't know how you were able to get an answer from Troy Bilt; it has now been 8 days & I still don't have an answer from them. Since being taken over by MTD, they have become useless!!!

**jhngardner367** · 07-28-2011, 05:01 PM

All the ones listed,show the rubber-rimmed disc,and I went back as far as it listed.Sorry.

**jhngardner367** · 07-28-2011, 05:15 PM

I operate a small engine repair facility,and I deal with a lot of MTD/Troy-Bilt units,so I contact Tom once in a while. I didn't ask if it will interchange,but I can contact him tomorrow,and find out. It may help,if it does interchange.

DaveCraw · 07-28-2011, 05:31 PM

I would really appreciate if you could talk with Tom about the upgarde. The last I knew, the only way to do this upgrade was to also change the lower pulley. On a tiller that is fast approaching 35 years old, I'm not about to do that unless the transmission has to come out for some serious other issues. I will await the results of your conversation with Tom.

**jhngardner367** · 07-28-2011, 06:06 PM

Will do !As soon as I know,YOU'LL know!

DaveCraw · 07-29-2011, 02:11 PM

I just heard from two other sources that the upgrade to the rubber rimmed unit requires pulley & belt changes & is not not worth the time or effort or older Troys. Have you heard from anyone else on ideas as to what might be causing my excessive disc wear?

**jhngardner367** · 07-29-2011, 04:20 PM

Yes, that's exactly what Tom says,also.He did suggest,though that there may be a rough spot on one,or both pulleys. He said you might check,and if possible clean it with some emery cloth,to smooth the surfaces.

DaveCraw · 07-29-2011, 05:08 PM

Already checked pulley for rough spots/pitting; none to be found. Any other thoughts? I cannot believe that I'm the only Troy Bilt Horse owner that has experienced this trouble. As I indicated yesterday, the rear bearing needed a .010 shim to take out the excessive shaft play. Please advise on other suggestions.

**jhngardner367** · 07-29-2011, 07:11 PM

There are only two other things that I can think of,that might cause it. The first is worn engine/transmission bearings. The second, is worn engine mount rods(the ones the engine slides up/down on)or rod holes.

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