I picked up a non-running 1974 ford 4000 Select O Speed this summer. The diesel engine had spun a bearing, but the owner told me the transmission worked great. I got the tractor for a low enough price that my back up plan was to swap the diesel engine from this 4000 into my gas 3000 if it turned out that the transmission wasn't as good as the owner said it was.
Well, I tried out the transmission for the first time tonight. Gears 3,4,7,8,10 and R2 do not work. I have a factory Ford shop manual. According to the manual, it sounded like a problem with band #1. Then I noticed oil pouring out of the bellhousing. I split the tractor again, to find a bad leak at the trans input shaft. My manual tells me that this leak could cause the particular gears that I was having a problem with not to work.
I also know that the input shaft and torque limiting clutch are shot. The splines are half worn off or should I say "half good". I don't want to be too pessimistic. I thought I would try out the rest of the trans before I do anything about those splines. Good thing I did, because I went to replace the input shaft seal and found that the splines on the pump are bad !!#$* Now I'm puzzled. The pump splines aren't worn. Just a spline here and there is sheared off. I have no explanation as to how that would even be possible.
So now I have to decide what to do. We did a major on the engine. New crank, bored, whole 9 yards.
Option #1: fix the SOS trans. knowing it needs an input shaft, limiting clutch, pump, and who knows what else.
Option #2: Part out the tractor, but keep the engine for my 3000. I could also sell the gas engine out of the 3000. There's nothing wrong with it. I'd just rather have a diesel.
Option #3: Find an 8 speed for the 4000 and swap out the SOS. Aside from the SOS, the tractor is in pretty nice shape. I have no idea where to look for a manual trans. though. I suppose I could look for a good SOS trans too. I wouldn't know where to find either one locally.
I would like to fix this tractor, rather than part it out, but I'm afraid it may be worth more in parts. Not to mention, value of my 3000 would nearly double by switching it over to a diesel.
Well, I tried out the transmission for the first time tonight. Gears 3,4,7,8,10 and R2 do not work. I have a factory Ford shop manual. According to the manual, it sounded like a problem with band #1. Then I noticed oil pouring out of the bellhousing. I split the tractor again, to find a bad leak at the trans input shaft. My manual tells me that this leak could cause the particular gears that I was having a problem with not to work.
I also know that the input shaft and torque limiting clutch are shot. The splines are half worn off or should I say "half good". I don't want to be too pessimistic. I thought I would try out the rest of the trans before I do anything about those splines. Good thing I did, because I went to replace the input shaft seal and found that the splines on the pump are bad !!#$* Now I'm puzzled. The pump splines aren't worn. Just a spline here and there is sheared off. I have no explanation as to how that would even be possible.
So now I have to decide what to do. We did a major on the engine. New crank, bored, whole 9 yards.
Option #1: fix the SOS trans. knowing it needs an input shaft, limiting clutch, pump, and who knows what else.
Option #2: Part out the tractor, but keep the engine for my 3000. I could also sell the gas engine out of the 3000. There's nothing wrong with it. I'd just rather have a diesel.
Option #3: Find an 8 speed for the 4000 and swap out the SOS. Aside from the SOS, the tractor is in pretty nice shape. I have no idea where to look for a manual trans. though. I suppose I could look for a good SOS trans too. I wouldn't know where to find either one locally.
I would like to fix this tractor, rather than part it out, but I'm afraid it may be worth more in parts. Not to mention, value of my 3000 would nearly double by switching it over to a diesel.