Easy Way to Fix a Leaking Gearbox on a Bushhog (rotary cutter) - Use Corn Head Grease 

Hahahaha

ha I haven't had too much trouble with it leaking out. Much less time/effort than replacing the seals, esp for as little as I use it.

Ahh yea. She's not full to the top, but that's a good thing to point out!!

U just answered a question that I do not have to type! Just what I was thinking, use a grease gun, vs "cake frosting" in a plastic bag. Seems easier/cleaner.

Yes, I got smarter over the years. Ha. I have found that taking a tube and opening one end, placing it over the gearbox opening, and then ripping the foil lid off and pushing it through the tube with a stick works perfectly and is incredibly quick.

haha Smother them with grease!

Yea, I have been happy with it for sure! Good stuff!

Thanks for this tip as iv just bought a old cheap lightweight blue 6 foot Irish topper called a Belmont for 350 pounds in seemingly good nick but when I got her home I checked the oil seemed it needed some so went out and bought some ep 90 next day which dripped right out underneath within a acre so was going to order a new seal or maybe a new gear box.but after reading your solution and happend to have a 20+ year old can of extreme pressure gear box oil I think 90/140 in the shed and a cartridge of red heat resistant grease I had around. piped in all the grease and then topped up with the oil.then off to work and no leaks iv topped up since as when I opens up the drain hole it was below the level as assumed the grease had mixed with the oil and coated the side walls of the housing so added some more oil until it ran out of the level hole .No leaks and yet seems to be less noisy and less heat I'm going to check every hour .to see how its holding out .I'll let you know what's the verdict after 20 Acres. So far iv done 5 with no leaks what so ever ..there's no vent hole so have decided to put a hydraulic U in the filler hole to let it vent and won't let in water so moisture holding inside and vent out in a hour or so . .don't know if this is a good idea?as it is extream pressure oil .but I'm worried if it gets hot it might try to push past the seal again making it worse?iv got nothing to lose by giving it a go.but not sure about the venting thing.I'll give it a try anyway.!don't know what gear box is on it seems a generic part but it just says made in China and Chinese stuff was even worse quality 30 yrs ago than it is today. It doesent look a nightmare to change .so we shall see.?the old topper does have a nice unique feature as it is held on solely by the rear arms only by jamming underneath forward of the pins so doing away with a top link and it pivot hinged from the centre so follows the ground undulations beautifully and also I found out if you lift up the arms you can easly flip it right over to vertical on the pivot and lock it in place sharpen it or change the level of the skids easly and So the end of the season you can get everywhere to clean and paint it with old oil for the winter or even store it leaning against a wall maybe i might try.Very Very impressed and can't see myself parting with this beauty as I don't want to be buggering around underneath things when I'm older.Why don't they put this feature on belmacs latest toppers.The set up doesent look complicated or weak or more expensive. They have just gone back to a conventional generic set up.Odd.if you ask me ! its the best thing iv bought in a long time .even if I did leak oil.but a replacement gear box is only 250 quid if I had to do it .but no rush now.Cheers for the tips.

Just be sure to not thin out the grease too much with oil as it will defeat the purpose. Mine is pretty thick and has had no issues at all. Also the grease thins out some as it warms up so that helps with lubrication in the hard to reach areas.

@@shopdoc That's a very good point .No leaks yet .but if i do get a drip I'll add some more of the grease to remedy .Thank you for saving me money and time .Its funny how you forget things but I'm sure my grandfather used to do the same thing with leaking gearboxes with his ancient tractors and machinery and probably had a sly joke about it .but it saw him out and he never ripped anything apart if he could help it .Things were only parked in a gap in the hedge if they were truly ronnied or rotten normally both.as most of his gear was 80 to 40 yrs old its safe to say they had had a life and were not wasted as a good supply of part knick nacks .lol he always parked his old zetor tractors on hill so he could start .as I don't think he ever bought a new battery .things could get a bit of a tiresome charade sometimes if there was a stoppage and nothing could be started as there was no good battery's to be had even in his land rover which he hand cranked its like OMG here we go again.seemed to have a garage full of dead batteries and dead battery chargers. .Tesla he wasent but usually got things going ...eventually he had the patience of a saint and would always say there's no rush and would be as happy as a pig in shit especially if he thought he was saving money on a job as we witherd as he fixed things slowly

Seriously?

​@@dougdiplacido2406Yes. It helps with the break-in process 😉

Thanks! Silliness is what makes life fun!

Hard to say without seeing it. My guess is 2 or 3 would serve you well. Also how many licks does it take to get to the tootsie roll center of a tootsie pop? 😁

@@IndyFarmLife One if it's big enough lol

Hahaha touche., Mr. Owl!

Since this video I have started pushing the entire tube in through the opening by using a long screwdriver and the metal cap!

It most definitely don't!!!

Yes! Except I don't really have space in a barn right now to do so. That cutter is big!

4 minutes vs 2 hours...time is worth it

@@IndyFarmLife all depends how much money u want to throw in it

For sure! I view time as money.

Exactly! This is why I'm so reluctant to buy anything used. This right here is the prime reason why.

In the grand scheme, this fix is a small time/monetary commitment. This rotary cutter is a monster and will level 3" and 4" saplings with ease. I purchased it for $800...new it would have been considerably more expensive. I would buy this used 10x over.

Could have paid someone to watch this video and make that comment. 🤣

@@IndyFarmLife he did

Yet the initial reply was in the first person...🤔