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Gehl 3510 - Blind (kinda) purchase
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<blockquote data-quote="BobMelroe" data-source="post: 32989" data-attributes="member: 2763"><p>Hi Taz. Looking at the parts book, the pump is coupled directly to the motor. There is an adapter plate that bolts to the flywheel which has (I am assuming) internal splines the drive the pump. The factory used a steel 'bellhousing' made from sheet steel that bolts to the back of the motor and also serves as the rear engine mount. The pump bolts to the back of that. I guess in simpler terms, it's just like an engine/manual transmission combo (without the clutch and pressure plate). But instead of a transmission, there is a hydraulic pump. No belts or anything. </p><p>It's not the pistons that are cracked and rusted, it's the cylinder walls of the block. Guess I could have worded that a little different, I get in a hurry sometimes. Judging from the rust rings in the cylinders, it looks like it has sat for quite awhile at one point. If it had water or inadequate antifreeze in it, it could have froze and cracked the cylinders. The antifreeze that was in it looked brand new. Hard to say what happened to it though. I haven't pulled the motor yet, so I don't know what shape the pistons are in. From the looks of the cylinders though, the skirts are probably pretty scored up. I doubt they will be any good. The block is pretty much junk. If it could be sleeved, it would still cost a small fortune to get it running. What kinda ticks me off is that I had a 37HP Wisconsin engine that I sold last summer. I bought that and the 30HP engine I wanted for my Bobcat as a pair. It ran fine but I didn't have a use for it so I sold it. Now I could use it. That's the way it always goes isn't it??? </p><p>Not quite sure how I can check the hydraulics yet, my brain is still chewing on that. I'm 95% certain the pump has a splined shaft. Don't know for sure, but it the only thing that makes sense with the way this is set up. That's what holding me up. The pump adapter that bolts to the flywheel, is as big as the flywheel, so I can't use that. As far as spare motors go, I don't have any, other than electric. I'll have to get the motor out I guess to see exactly what I'm dealing with then go from there. I don't mind spending a little money on it. I just don't want to sink a bunch of money into this until I know what state the hydraulics are in. I'm sure you all can understand that.</p><p>If the hydraulics are good I'll have to decide on motor options. I need at least 30HP. My brain is also chewing on that. I'm just hoping it doesn't choke or chip a tooth.....</p></blockquote><p></p>
[QUOTE="BobMelroe, post: 32989, member: 2763"] Hi Taz. Looking at the parts book, the pump is coupled directly to the motor. There is an adapter plate that bolts to the flywheel which has (I am assuming) internal splines the drive the pump. The factory used a steel 'bellhousing' made from sheet steel that bolts to the back of the motor and also serves as the rear engine mount. The pump bolts to the back of that. I guess in simpler terms, it's just like an engine/manual transmission combo (without the clutch and pressure plate). But instead of a transmission, there is a hydraulic pump. No belts or anything. It's not the pistons that are cracked and rusted, it's the cylinder walls of the block. Guess I could have worded that a little different, I get in a hurry sometimes. Judging from the rust rings in the cylinders, it looks like it has sat for quite awhile at one point. If it had water or inadequate antifreeze in it, it could have froze and cracked the cylinders. The antifreeze that was in it looked brand new. Hard to say what happened to it though. I haven't pulled the motor yet, so I don't know what shape the pistons are in. From the looks of the cylinders though, the skirts are probably pretty scored up. I doubt they will be any good. The block is pretty much junk. If it could be sleeved, it would still cost a small fortune to get it running. What kinda ticks me off is that I had a 37HP Wisconsin engine that I sold last summer. I bought that and the 30HP engine I wanted for my Bobcat as a pair. It ran fine but I didn't have a use for it so I sold it. Now I could use it. That's the way it always goes isn't it??? Not quite sure how I can check the hydraulics yet, my brain is still chewing on that. I'm 95% certain the pump has a splined shaft. Don't know for sure, but it the only thing that makes sense with the way this is set up. That's what holding me up. The pump adapter that bolts to the flywheel, is as big as the flywheel, so I can't use that. As far as spare motors go, I don't have any, other than electric. I'll have to get the motor out I guess to see exactly what I'm dealing with then go from there. I don't mind spending a little money on it. I just don't want to sink a bunch of money into this until I know what state the hydraulics are in. I'm sure you all can understand that. If the hydraulics are good I'll have to decide on motor options. I need at least 30HP. My brain is also chewing on that. I'm just hoping it doesn't choke or chip a tooth..... [/QUOTE]
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