Combines 715 cylinder speed adjust

[Ohio__Steve]

Probably the threads on the adjuster part are rusted together. These maybe covered with a seal made of canvas like material but are accesable and maybe lossened up with some PB Blaster or some such penetrating solution. Not really to bad to take apart but will need to open the spring loaded shieve if you can't back the adjustable one off to loosen the belt. A home made wooden wedge will work for this... If rusted really bad, a salvage yard replacement may be less trouble and shouldn't be a high demand part. Good luck

 

[oliver]

Thanks for the reply. I stopped at the dealer today(www.salemfarmsupply.com) and they printed out the parts breakdown of that drive. I see what you mean about the threads and the cover over them. I think this weekend I'll see if they want to try to free that up. This only has one adjustable pulley on the drive; the driving pulley is a fixed one, made out of two stampings riveted together. It has a spring loaded idler to keep the tension on the belt. Thanks again. Oliver Durand

 

[oliver]

Got to work on it yesterday(Saturday, Nov 27). Found the threads would move, although stiff from not being adjusted. The real problem was the chains on the adjuster linkage. I don't think anybody had adjusted this drive since the machine was nearly new! Not a sign of oil on the chains and they were rusted pretty tight. The proper fix would have been new chains, but since it was Saturday afternoon, and we had time, I put the penetrating oil to them. Took the lower one off and worked it back and forth to free it up, then dunked it in motor oil. The upper one looked hard to get off, so I sprayed it down and kept working the ratchet around until it freed up, then sprayed it with multi-purpose oil to lube it. Adjusts fine now, and I think the owner will keep it lubed. Thanks for the help. Oliver Durand