REPAIR of the MTD Snowblower PART 1 of 3 - Auger Gear Box
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- เผยแพร่เมื่อ 13 มี.ค. 2010
- Replacing the blown auger gearbox. The worm gear in it is snapped.
For more detailed instructions watch my other videos of a similar repair at this link. • REPAIR of The Blown Sn...
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GREAT VIDEO, MADE MY LIFE A LOT EASIER. I JUST REPLACED A GEAR BOX ON MY SNOWKING 5.5 HP SNOWBLOWER. GREAT JOB, EASY TO UNDERSTAND, KEEP POSTING. THANK YOU!!!
Thank you so much. I fixed my snow blower yesterday and today we had a foot of snow and worked great! Thanks to your great videos!
you're welcome
Thank you for posting this my worm gear went and I'm going to fix now.
Donyboy73, thanks for all the great videos. I have used your tutorials on all my chainsaw, lawnmower and snowblower fixes. Your videos are very informative and you have saved me a lot of money as well as taught me a lot. I hate having to get someone else to fix something for me if I can learn to do it myself.
I am having a bit of a challenge diagnosing my latest problem and hopefully you can help me out or point me to a video you may already have (that I have missed). I have a 27" Murray Snowblower and today while using it, I noticed that I seemed to have a lack of power. Sometimes while in 1st or 2nd gear, the snowblower would not propel itself. I later checked the idler pulley and it appeared to be in good shape and tight enough. I then heard a scraping noise from inside the housing. I determined that the augers were still spinning, however, the left side of the auger blade (if you were standing at the controls) was now scraping the side of the housing assembly and gouging the metal. I removed the shear pin to stop that side of the auger from spinning temporarily until I can figure this out. The shear pin was in tact, although it had a slight bend in it. Once the shear pin was removed, the hole in the auger blade would no longer line up with the shear pin hole in the shaft. It appears to have misaligned by 1/4". There is a 1/4" gap between the auger blade and the bushing on the housing assembly, however, I cannot slide the blade to align the holes because the end of the blade is pushing against the housing assembly.
I can't understand why the auger blade just began doing this. Is it possible the the gearbox and/or impeller has misaligned and is now on an angle causing the scraping? If you could provide any guidance on how to troubleshoot this, it would be greatly appreciated. Another Nova Scotia winter snowfall is coming soon and I want to be ready. Thanks again Donyboy!
+Colby Smith sounds like parts of the auger may be bent, usually a large pair of pliers or a hammer can straighten it out, then it shouldn't rub on anything
+donyboy73 You were right! The end of the auger was bent 45 degrees. It actually looked like it was supposed to be bent like that, however, I used a hammer to straighten it out and now it clears all obstacles and is working perfectly. Thanks for the quick response and keep up the great work!
This is still a useful video for MTD repair. The one recommendation I would make is to use locktite on the bolt holding on the flywheel belt pulleys to the drive shaft. I used blue the first time it came loose (factory torque failed), and used red after the 2nd time that bolt worked loose. Red did the trick, and haven't had an issue with that bolt since. After 18 years of service my MTD gearbox failed today on the first snow of this season. It's pretty heavily rusted....not sure if it worth trying to repair
Thanks... bought an old one the other day, and the gearbox blew after an hour. With your video and $85, I'm running again
Those cheap gearboxes are a reason why i love my 40 plus year old Ariens machines.
Great thank for the very helpful video! I managed to a snag a tennis ball-sized rock in the auger (buried in deep snow) and thought I'd killed my gear box. I got lucky and only clobbered the shear pin and bent the blade tip. But if the box lets go, I'm good to go on repairing it. Good on ya!
you're welcome
Good basic instructial videos on most procedures. Tks
I can see a vast improvement between this video and your newer ones, as you list what each bolt size is and also how the parts are to be reassembled. Either way you do instruct but you've gotten much better.
Thanks for the video. I got the gear box replaced, but now I can't get the impeller/auger assembly back in the housing. The shaft for the impeller won't fit into the bearing. I've greased it, but I don't want to start pounding on the thing now that I fixed it!
@donyboy73 i bought an old ariens machine at a yard sale a few years ago to part out. The side gearbox covers were torn to shreds, and the gearbox still worked completely dry with no gear oil.
Thanks Donyboy73
Cost me ~$35 in parts to fix. Our excellent local small engine shop needed $250 + parts.
TH-cam and folks like you are an incredibly valuable resource!
Thanks Again
+Basher good to hear
Thank you I replaced the auger belt and found a stone stunk in the wheel the throws the snow out the shoot. well I have a new auger belt on know. I have to watch your videos on how to tighten the belt a little loose.
GREAT VIDEO AND VERY GOOD EXPLANATION, BRAVO!
thanks for watching
@semtech30 i never put in regular bolts, this is a shear bolt
Great video
I am replacing the auger belt hopefully tomorrow just got the belt today thanks.
We didn't get snow here this year. Great video ! 5 stars
what web site can I find gear box for my snow blower??
@runningtat i would have to physically see it to diagnose it, but make sure nothing is rubbing on the belts, check the idler pulleys to make sure they are in good shape
Donnyboy, great video as always. Very detailed. Do I have to maintain the gear case in anyway? Do I have to remove the grease plug and add grease? I have not lubed the MTD snowblower. When I remove the shear bolts what kind of oil do I put in there. There is no nipple for a grease gun anywhere. Thanks
Can you explain how to determine RH vs LH and in/out on the auger spirals need to be in the case that they get mixed up?
I had a similar problem. There is a pin on the shaft, just behind the gears that broke a couple of times. Difficult to replace the first time.
thanks reg
I am having trouble pulling or separating the Auger and impeller from the bearing! Any advice?
Tutoriels très instructifs
Hi Dony, I could use some help. I have a 42" John Deere snowblower attachment for my riding mower. This seems to be nearly the same type of system but there's one thing I couldnt understand from your video. I removed the pulley on the back of the snowblower housing but I am not sure how to detach the worm gear drive/shaft/impeller from the housing. also, not sure I can get the 2 pins out that are attached to the gear drive shaft where it meets the impeller. any suggestions?
Hello donyboy. I have a small problem with my mtd 10.5HP snow blower. Its not functioning right and I found out that one spring by the friction wheel is loose and one more , smaller spring is broken and I don't know where it goes. i believe the one loose is like a a belt tensor, but the small one I have no idea where it goes and i have to buy it because its broken, Thanks or your videos, they are very helpful.
@rocsvt1 usually 80w90
Rebuilding a very similar blower mtd 29 inch and have looked at the diagram for the blower it only calls for one washer by the gear box and in my parts box i only have 4. Am i missing something?
@mcdowlake I just bought the gear for the gear box on a 4 hp/20" myself and paid $55 from randysenginerepair on ebay. it all depends how many parts are shot. if u buy a complete assembly it's around $200
what would cause the impeller shaft to move back and forth ? so much so that the impeller blades scrape the back of the auger housing and the auger pulley hits the engine frame ? Auger Pulley looks like it woobles a bit too?
hey donyboy i have a 5/23 craftsman track snowblower and i was wondering what oil to use for the gear box?
Okay I have a question what happens if if the main shaft won't pull through the back bearing of the back shrewd. I'm trying to separate the shaft from the bearing in back of the shrewd and it won't pull through the bearing
I have a yardworks 48" snowblower. The propeller spins but the augar doesn't. I can move the augar by hand no problem with the brake on. I looked online and it looks like it could be a shear pin inside the gear box. Could it be that or could it be something else? Of Course this would happen after getting 30 cm's of snow the other day.....
How would you get that shaft out of the housing if it was sized on?
practice makes better
@craig1974 yea you can't bust those old gear boxes
Hi Dony. I need to replace the auger shaft flange bushings on an older MTD 8/26 snowblower. I've removed the old ones and they appear to measure 3/4" id, 1-1/2" od and 1-3/4" flange. It is the type with two flat sides. I can't seem to locate replacements online. Do you know where I could find them. Thank You for any advice :-)
How do you get the bearings off!?!
Hi Donyboy,
Marc from Ottawa here. I have a 10HP MTD, with 2 auger belts. I've replaced them following the very informative videos from another post. I have a problem though, every time I fire up the engine, the belt closest to the engine keeps jumping off. The idle pulley can't be adjusted like you show in another post. Any ideas how to keep the belt from jumping?
hi..i am looking for a mtd 26" auger housing 684-0040D
does anyone know if a Ryobi 10hp 28 augur front will fit on a yardman 8.5hp 26inch front. it looks exactly the same, but the motor is obviously slightly less powerful and the mouth is a few inches bigger. It surprisingly looks like it could work, but before I rip it appart to find nothing lines up has anyone else tried this.
the yardman is mine, in good condition but it stripped the gearbox bad, steal shaft and the gear. the Ryobi I just picked up at a scrap yard for 12 bucks. broken gas tank, no handles, probably a bad engine.
This is a case of 'false economy', because it really did not need much work doing to it. Some mechanical aptitude and the previous owners would have realised the problem and made what is essentially a new machine from the bits.
Nice clear explanations thanks.
Wait a minute Donyboy. . . How did you get that auger and impeller assembly out of the housing ? 1:35
You seemed to have skipped that part buddy.
I can't get mine out. The auger bearing on the drive shaft seems to only come out from the rear, while the shaft is attached from the front with two very hard to reach steel pins. Can't get a hammer in to them. Can't force the bearing out the front.
i have an idea i want to make a hay tedder or belt rake is this possible
First, thanks for this very helpful video! My problem is very similar to the one in the video, except that my gear is not snapped, but very worn. Is there a way to replace only the gear? It seems to be pressed on the shaft.
Never mind my question, I found the keyway; It was hidden by the washers!
aaaahhhhhh.......snowstorm here in nova scotia today.......i have replaced the belts on my older MTD snowblower twice in two weeks. they break after a half hour or so after i replace them. i have watched your belt video to help but they keep snapping. what am i doing WRONG. i live rurally with no repair shop close by.HHHEEELLLLLPPPPP.i HOPE I AM NOT ASKING TOO MANY QUESTIONS, YOUR INPUT WOUD BE GREATLY APPRECIATED......THANKS
Hey donyboy my yardmachine snow blower won't run it does stert but don't run what could be the problem thank you in advance
I have a tecumseh snow king press the auger lever the auger well not turn I get a squeal what is broke?
Appreciate the video. I am working on my 2005 MTD Pro, the bearing in the housing behind the impeller did not want to come off the shaft. I used a gear puller to get it off. Should that actually just slide out? - I am afraid I stripped the threads inside the impeller shaft when I did it. Also can you recommend a site to purchase parts?
yes it should slide out, sometimes I have to use oxy- acetylene to heat it so it will come out
Yupp, but you still do a good job, and that was fast.
Thanks for the snowthrower videos but I think I have an issue you havent covered. My snowthrower is a MTD two stage, I broke the shaft on it, replace it (with new shear pins) and now it seems one side throws snow properly (right) but the left side seems to just push the snow in front. It is almost as if the auger is wrong. Can anyone give me any suggestions? I live in Michigan and we have quite a bit of snow. Snow coming out of the chute seems to be heavy on the right side and light on the left side. The left side is also the side that seems to not be working correctly. Thanks for all the videos!
+damma723 - Sounds like you put your Auger back on backward. Does it Spin? If it does and snow is " not " going the right way, more likely you put it on backward.
Hi damma, if you replaced the shaft and shear pin it will be rotating at the same rpm as the right side. The only thing that would possibly slow it down could be replacing the auger with one that doesn't have the same spline ratio for snow ingestion. Take a large tie wrap and tie your auger handle down and step in front of the machine to get a look to see if it's rotating properly.
Has anyone ordered gear box seals for a MTD snow thrower auger shaft, and had them be too large of an outside diameter ?
seems like there is no gas going into the carb how can I fix miself?
I see for a shear bolt, you put in a standard threaded bolt and nut on the auger. Unless they are specific shear rated, a standard bolt is to hard. This is a reason for the gear box damage as the harder shear bolt would not break. The gears do instead. Jaming a branch, brick, rock, or kids toy in the auger will cause a sudden stop and breakage.
how did you get the auger out? mines seem stuck I need to change the bearing . did u hit with a hammer? please help
+Eric Rivera I used heat and a brass hammer or a block of wood on the shaft so not to damage it
The machine is 2 years old and seems like no gas going into the carb and I just filed up the tank how can I fix it myself?
@mouse4ahouse when that happens I heat it red hot, wear safety glasses.
I just watch the video and it looks like you favor replacing the gearbox, maybe because you have them. I haven't taken mine apart, but I'm sure something is broke inside. I guess 12 years of Michigan snow have done it in. Although I did find it interesting about not making shear bolts tight. So I think I might have shortened the life of this part because I usually make my shear bolts snug. I don't really tighten these with a lot of power, just enough so the shear bolts don't spin.
Could you have just changed the worm gear on the blower from this video?
sometimes yes you can change just the gear , but the gear on the impeller shaft usually needs changing as well
I forgot to mention that I couldn't find a video that included removing the shaft from the housing. It looked like an easy thing, but since I didn't see anything I ended up taking the bearing retainer plate to see if something else was needed, but didn't see anything. I gave it a couple of taps with a brass hammer, then some anti rust spray, let it sit, and tried the brass hammer touch. Nothing was happening, so I took it into a shop for repair. Here in Michigan we need our snowblowers this year, but I don't think Michigan needs me to be here while all this snow is coming
Is it possible to replace just an auger without removing the whole front blower assembly? One of mine broke and I have a replacement coming. I'm hoping that I will only have to take apart the gear box also. thanks!
+Chris Larson you have to take it all apart
+donyboy73 - ugh, ok, thanks!!! :-)
well, found out the hard way why you skipped showing how to get the driveshaft out from the bearings. I saw on another video that the shaft was seized to the bearing and the guy had to hit it with a sledge to get it out. I had wood over the spines so I didn't damage them, but some how they still flanged out and now the pulley retaining piece won't slip back onto the spins. Going to have to replace the entire gearbox setup.
That's what I was about to say!! Only when putting it back on, I didn't see the order of steps. All I saw was the shaft was through the hole and attached already to a pulley. What is underneath holding that on !!
chivone21 - I replaced the whole gearbox and drive shaft unit along with a new bearing. I basically rebuilt the whole auger system but it's solid now and ready to go! This guarantees us little to no snow this year, haha
What connects the worm gear to the main shaft?
Update: I can see the shaft key in one of your other videos. Thanks.
Didn't you post a video about a complete rebuild of a 4-cycle engine? If you did, can you send me the video link?
HI Donyboy,my yardmaster two stage snow thrower wheels lock up when the engine is off. Waiting for Service Advisory MTD 028A Seems there is a bering defect with certain models, lucky me I have one. Have You, encountered this problem?
Did you try squeezing the hand levers on the handles of the machine to disengage drive wheels?
check belts
I found 2 ball bearings just laying in the chute. where are they from. is it easy to fix. thanks for any and all help. Dave
+Dave Marsh might be from the impeller bearing
+donyboy73 ok. which im guessing means the auger comes off, or the whole chute comes off?
+Dave Marsh if it's the impeller bearing then the blower will have to be split in half, the auger pulley removed and it will there behind it
+donyboy73 Ok thanks, is this only place bearings would fall out of or is there a simpler place I should look
+Dave Marsh usually the only place, without seeing your specific blower I can't be 100% sure
do you know what kind of fluids or gear lube goes inside the auger gear box?
type "00" grease
type 00 grease ... Yes here's some detail: MTD specs a low temp EP grease.
Local small engine shop provided me Lubriplate "Low-Temp Multi-Purpose" pn# L0172-098 it's inexpensive, but local Shucks Auto parts doesn't stock it or equivalent
Salut Don,
I think I've detected a bit of a French Canadian accent... but I'm going to go ahead and ask my question in English, in case I'm wrong... :)
I have one of those tractor mounted snow thrower from MTD (model OEM-190-823).
My auger gear seems all messed up. I'd like to take the assembly out WITHOUT taking the whole Impeller assembly out in the process. There are a couple of spirol pins on the shaft that goes through the Impeller. Is there a way to remove those pins easily without having to pull the Impeller and/or snow housing assembly?
If I need to pull everything out... this may just be too much work for me. If I could, however, remove those pins... then the job (with your videos) seems pretty easy.
Any help would be appreciated.
Thanks.
P.S. I'm using the user's manual for part names... I have no clue what I'm talking about :)
yes I'm French, I remove the whole auger system
C'est bien ce qui m'inquiétait... je vais regarder demain si je peux enlever à partir du coupling, en arrière de l'impeller. Ça ne serait pas si pire, si c'était le cas.
Merci de ton aide!
Interesting that most of the snowblowers you repair are MTD-built units......
probably a carb issue
“Runs good for techumseh.” Lol
they break the most, never have honda and rarely ariens
HI DONNYBOY.. WE WATCHED YOUR CHANNEL AND NOW WE WERE BRAVE ENOUGH TO REBUILD OUR SNOWBLOWER .. GEARCASE AND SHEERPINS AND EVERYTHING.. FULL SANDBLAST N REPAINT.. BIG SHOUTOUT TO YOU ON MY LATEST VIDEO.. PLEASE CHECK IT OUT..THANKYOU.. IAN IN CANADA.. WAITING FOR SNOW...
@mcdowlake for $50 i would buy it just for the parts and maybe u can get it going??? cheaply who knows, but it's a project
Would you be interested in selling geR box houseing or know
@JorgeOcampo22 send me ur email, i have pics of where they go
I don't I did
Whatever the make, they are all a pain in the ass to repair!! Got a deflated tire (not a flat) and could not remove the rim to have it fixed, how's that??The one i have is a cheap Yardworks bought at Canadian Tire.I don't have a garage to fix and i don't have a pick up truck to bring to the dealer.Darn thing is only 3 years old! Are they made in China???Next step i will take a snow contractor.Voilà!
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