Abby’s Guide > Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) > Discussions > How To Remove Gearcase Assembly ON Ariens 824
Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions |
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itzbinnice
Joined: Nov 1, 2002
Points: 85
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How To Remove Gearcase Assembly ON Ariens 824
Original Message Jan 25, 2005 8:03 pm |
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Have a 10 year old Ariens 824, model 924082. During Sunday’s snowstorm halfway through cleanup the auger stopped turning. I did not hit anything or was there a jam. The impeller works fine and the shear bolts are good. The augers turns turn freely, both locked on the shaft. If you turn the impeller the shaft turns going inside the gear case but the augers don’t turn. I know the augers should not turn by trying to spin them, only way to move them is to turn impeller, but mine spin freely indicating a problem within the gear case. I am hoping it’s only the pin that holds the gear onto the shaft.Now my dilemma, I cannot pull the gears case assembly out because the collar( hub) that the auger pulley is bolted to is frozen solid. It must be removed to enable the whole gearcase assembly to be pulled out from the front of the bucket. I did remove the pulley from the hub to have more room to work. I have spent 8 ½ hours today trying to get the hub off the keyed shaft. I soaked for hours with penetrating oil, used a torch with Mapp gas and still won’t budge a fraction. Our good friend Majorxlr8n (Marty) emailed and told me to do the following: “If the auger shaft bearings are on the OUTSIDE of the auger casing, then all you have to do is remove them from both sides. The next step is so simple - to pull the augers & gearcase out, spin the impeller shaft either clockwise or counterclockwise. The whole auger assembly will “walk” off the impeller shaft, and VOILA - its all out!” I will attempt this method on Thursday. I still would like to get the hub off just in case I will need to replace the shaft with worm gear and the main gear that meshes with it. Sadly enough my Ariens parts manual shows the shaft and gear must be bought as an assembly (73.00), even though I may only need the gear. If the shaft must be replaced and I can’t get the hub off my last resort will be to use a sawzall and cut the shaft close to the hub, once I get the hub off, I may be able to pound the cut shaft off the hub using a vise. Does anybody have a suggestion of what else I can try to remove the frozen hub, perhaps there is a special tool that can get it off.
This message was modified Jan 25, 2005 by itzbinnice
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itzbinnice
Joined: Nov 1, 2002
Points: 85
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Re: How To Remove Gearcase Assembly ON Ariens 824
Reply #15 Jan 27, 2005 10:25 pm |
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Sorry for being late, busted my tail off today. I tip my hat to you guys that do this for a living, you damn sure earn your money. I got the hub off today using a pickle fork for ball joints (15/16) spread. The ones for the tie rods are too small (21/32) because the shaft is 3/4". Took a while but I didn't damage anything and the hub can be reused. I found the problem, the brass gear that is pinned to the 1" auger shaft was completely wiped out, didn't even look like a gear. Yes the pin that holds it is solid and strong, not the hollow type I thought it would have. The worm gear looks OK but I went this far so I think I'll replace the whole shaft, including the rear bearing that mounts on the rear housing. According to RCPW.com the brass gear can't be bought separately, only in tandem with the impeller shaft. I'm going to the local Ariens dealer on Saturday and confirm that the gear can't be purchased alone. I'll bring the shaft with me and ask them if they suggest replacing if the gear can be bought separately. I still have one problem, I can't get the impeller of the shaft, I'll have to bring it somewhere and have it pressed off. The gear box had no oil in it, but plenty of brass shavings. I just bought this used recently off Ebay as a buy it now. When I picked it up I saw it had two nails substituing as shear pins, a flag right there but it was too late, already paid for. The auger did turn though, I used it on a 4" snowfall. I summize the guy hit something or something got stuck and the nails didn't snap and chewed up most of the gear. Just enough meat to move the auger. When I did the EOD and met resistance, along with the sloppy rear bearing, it chewed off the fraction of the gear that was remaining. Lesson learned, shear pins are designed for a reason and alot cheaper than what I'm going through. I did scold the guy and told him you should be ashamed of yourself for doing that, the guy was carpenter/handyman and should have known better. First thing I did was put OEM shear pins in, but I did not check the gearbox oil, as it turns out it had none, it did have some grease in ther but not much Speaking of that, looking at how it is engineered, it appears if it were filled with oil, it would leak out the shaft. Sorry for sounding stupid, it's because I am, but should that gearbox be filled with gear oil or some sort of grease?
This message was modified Jan 27, 2005 by itzbinnice
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Snowmann
Joined: Dec 3, 2003
Points: 494
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Re: How To Remove Gearcase Assembly ON Ariens 824
Reply #21 Jan 27, 2005 11:35 pm |
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L2 lube is a special 90W AGMA 5 gear oil, not grease. I would not assume just because there is grease in the gearcase that it should take grease. After all, there were nails for shear pins right? I believe there was a liquid #00 grease used at one time, as well as lithium complex #2 EP-rated grease. For worm gearcases make sure you get an EP rated grease and not the standard stuff. I'll check your model for you tomorrow to see what lube it takes. A serial number would really help out for this. It should be six digits long right below the model #. The parts manual probably calls out the shaft/gear combo. It's likely you can get the gear alone, but not recommended. If the current worm shaft were damaged you could ruin the replacement gear. If you re-use the shaft, be sure it is perfectly straight and make sure there's no damage to the worm profile (most times the damage, typical bent shafts, is not easy to see without V-blocks and a height gauge). The gears are made from manganese silicide bronze with a partical hardness of Rc70 (micro hardness, not macro). Pretty hard, but a damaged worm shaft can tear it up in no time. PK
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itzbinnice
Joined: Nov 1, 2002
Points: 85
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Re: How To Remove Gearcase Assembly ON Ariens 824
Reply #23 Jan 28, 2005 10:28 am |
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Snowmann, The model is 924082, SN is 023832. If it is 90W gear oil and the parts manual shows it comes in 16 oz bottle. How much oil should I put in there of the 16 oz, It looks to me that anything that would be above the bottom end of the shaft would leak out. Also if you turn the machine forward and let it lay on the bucket, I would think it would leak. We're talking about a moving shaft through brass bushings and some sort of seal on the end. In my opinion, whenever you have moving parts there will be friction and wear, thus causing a leak. I just don't see how those seals would prevent liquid from leaking, especially the rear seal that is only a metal cap. Haven't given the two side case seals a thorough examination yet. I will replace the shaft assembly, I refuse to do this job again.
This message was modified Jan 28, 2005 by itzbinnice
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Snowmann
Joined: Dec 3, 2003
Points: 494
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Re: How To Remove Gearcase Assembly ON Ariens 824
Reply #24 Jan 28, 2005 2:08 pm |
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Itzbinnice, Your unit requires 2.5 oz of Ariens L2 gear lube. There were versions of this model immediately prior to yours that used 4 oz of Mobil Monolith AW00 grease, but your's does not. I would -not- advise using grease for your unit. The oil seals will seal the gearcase properly unless your shafts are badly pitted. They do allow for shaft wear and are still able to seal. Also, Ariens uses Loc-tite 518 Anaerobic sealant to seal the halves, but the gasket sealant the dealer recommended will likely be fine. When you assemble the gearcase, it may be wise to put a very small bead of the rubber gasket sealant around the seal OD. Just a bit, though. You absolutely do not want this sealant to get into the seal lip or it will leak. This will help if there's any small misalignment gaps around the seal when the two halves are closed together. For the 2 (side) rake shaft seals, this will also help seal any scratches that might be in your seal bores from prior servicing. The seals that you require for the sides (05606100) do not have bore-tite/hypalon on the OD to fill these scratches (if there are any). Paul Koltz
This message was modified Jan 28, 2005 by Snowmann
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