Only on the one, baler has a clutch in the driveline. I have replaced the original Claas driveline, we call it a PTO shaft in South Africa, as I though this may be the problem. No luck in solving the problem, as each component fails I replace it with higher spec heat treated material, I am not concerned with the cost of these repairs but the loss of harvesting time is starting to bite.Good Morning Scott, welcome to the forum.
You have 3 each Massey Ferguson 1105's. Is this happening on only one of them, or on all of them? If more than one tractor, your baler may have a problem?
If it’s not a problem with the bale pressure or slip clutch….you got me 🤔. I hope someone running a claas will step up. Good luck with the repair. B.Hi BinVa
All tractors have a identical setup. Breaks while running in a straight line, PTO driveline does not slip at all. Just spent the morning putting a new shaft in - worked perfectly for 2 hours and then shredded the coupler between the internal
PTO shaft ant the PTO clutch/drum.
Hi AllBeen following along and I'm curious about something, I'm not familiar with the baler at all but most balers I see, have either shear bolt protection on the driven driveline on the baler or a slip clutch the needs to be set to slip ate a certain torque value. Which one do you have? You have to have one or maybe both. Are you using the Claas recommended shear bolt which will usually be a Grade 2 in the driveline or have you slipped the slip clutch recently (if it has one). Slip clutches require slipping manually every year of so because the friction material locks to the drive (metal) plates when sitting. Far as slip torque is concerned, Weasler has a chart on their website that tells you at what torque setting a clutch needs to slip at to be effective.
Like I said, I slip mine yearly by backing off the retention springs and engaging the pto and allowing the clutch plates to 'burnish' themselves for a couple revolutions, then I'll lock the clutch with a suitable steel rod through the external space in the coupling (implement side, tighten down the tension springs while using a torque wrench to set the preload. I do that every year. It's required maintenance, especially if the baler is exposed to the weather.
I'm thinking that the baler is imposing an excessive torque load on your pto internal input shaft and breaking it.
