Thank you for the video. Just bought my 770 about 4 months ago and silly me not checking everything. My 770 has suffered a similar fate..but looks like I'm dealing with a chewed up ring and pinion due to the previous owner not keeping up on maintenance and checking fluids.
Great video. One suggestion, though. Could hardly make out the audio on the clip. Maybe use a remote (rf style) microphone plugged into your digital camera. Really enjoyed seeing how to repair the beast. I bought a 2003 model 790 back in 2018 with 1000 hours on it. Recently, noticed right front wheel making a noise. So, it is parked in my driveway, awaiting a teardown to see what the damage is. Had plenty of oil in the cavity. May just be due to the hours on the machine. We'll see. Thanks again for the video.
Really surprised just how small that front end is. I know you mentioned that, but as awesome as they were/are I mean WTF. Must've been to guarantee parts, making reoccurring fees/service. My 88' 1050 has weak pinion seals but at least everything else is strong. The original model was very weak in the spindles thought, mine is legitimately Yanmar/Deeres 3rd generation. They finally got it right on the last try lol. The 850-1050 models with the 60" bucket capping the model 75 (mine) or model 80 loaders the lift capacity power was too strong coupled with a turning radius far too tight. With a bucket full of gravel (1600 pounds easily) in a hurry hitting stones and bumps at full lock the spindle easily snapped. Mine still has the pinion seal that loves nothing more than to leak. Always something Good video man, good luck with it all
If it's a small enough leak, could you stop it by adding some type of a gasket sealer this time? We just bought a 790 and it too has the same problem. Although we have not priced out the parts, I'm sure if they are purchased from JD they will not be cheap. Maybe we'll go to EBay as suggested. Do tractor companies do recalls? This is our first tractor so we don't know much about them. How about having the gasket surface machined down a 0.0001 or so? Too much? Or maybe just keep checking the fluid? That seems cheaper. LOL.
I paid about $200 for parts this time. I paid about $80 for one gear and $90 for the other. I'm not sure how much I paid for the gaskets or snap rings. There was roughly 400 hours of use between repair. I think the reason was the front end was leaking gear oil and I didn't notice it. I think if I had kept the front end full, It would have gone many more hours.
@@itsrich7790 I am looking at buying one and wandered what to expect. Thank you so much for the information, video, and response! It was all very helpful!
This time I purchased parts on Ebay. Last time I went to Shaws Ridge Equipment in Alfred Maine. They didn't have parts in stock so they had to order them.
Thank you for the video. Just bought my 770 about 4 months ago and silly me not checking everything. My 770 has suffered a similar fate..but looks like I'm dealing with a chewed up ring and pinion due to the previous owner not keeping up on maintenance and checking fluids.
Great video. One suggestion, though. Could hardly make out the audio on the clip. Maybe use a remote (rf style) microphone plugged into your digital camera. Really enjoyed seeing how to repair the beast. I bought a 2003 model 790 back in 2018 with 1000 hours on it. Recently, noticed right front wheel making a noise. So, it is parked in my driveway, awaiting a teardown to see what the damage is. Had plenty of oil in the cavity. May just be due to the hours on the machine. We'll see. Thanks again for the video.
Really surprised just how small that front end is.
I know you mentioned that, but as awesome as they were/are I mean WTF. Must've been to guarantee parts, making reoccurring fees/service.
My 88' 1050 has weak pinion seals but at least everything else is strong.
The original model was very weak in the spindles thought, mine is legitimately Yanmar/Deeres 3rd generation. They finally got it right on the last try lol. The 850-1050 models with the 60" bucket capping the model 75 (mine) or model 80 loaders the lift capacity power was too strong coupled with a turning radius far too tight. With a bucket full of gravel (1600 pounds easily) in a hurry hitting stones and bumps at full lock the spindle easily snapped.
Mine still has the pinion seal that loves nothing more than to leak. Always something
Good video man, good luck with it all
That little round ring that popped out 20:42 is 90% worn away. That is the thrust bushing.
How did you get the lower bearing from the final drive out?
If it's a small enough leak, could you stop it by adding some type of a gasket sealer this time? We just bought a 790 and it too has the same problem. Although we have not priced out the parts, I'm sure if they are purchased from JD they will not be cheap. Maybe we'll go to EBay as suggested. Do tractor companies do recalls? This is our first tractor so we don't know much about them. How about having the gasket surface machined down a 0.0001 or so? Too much? Or maybe just keep checking the fluid? That seems cheaper. LOL.
17:26 sec into the video there is a washer above that gear
How much did the parts end up costing? Also, how many hours were there on the tractor between repairs? Thank you for sharing the video with us!
I paid about $200 for parts this time. I paid about $80 for one gear and $90 for the other. I'm not sure how much I paid for the gaskets or snap rings. There was roughly 400 hours of use between repair. I think the reason was the front end was leaking gear oil and I didn't notice it. I think if I had kept the front end full, It would have gone many more hours.
@@itsrich7790 I am looking at buying one and wandered what to expect. Thank you so much for the information, video, and response! It was all very helpful!
Where did you order the parts from?
This time I purchased parts on Ebay. Last time I went to Shaws Ridge Equipment in Alfred Maine. They didn't have parts in stock so they had to order them.