1961 10ML55 Impeller seal replacement - Snowblower Forum : Snow Blower Forums
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post #1 of 29 Old 01-14-2014, 01:18 AM Thread Starter
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1961 10ML55 Impeller seal replacement

For the past few days, I've managed to tear apart my gearbox in an attempt to replace my auger and impeller seals, which were leaking like a sieve after I filled it with 70w-90 gear oil. Thank you Ray and Shryp for all your assistance on this. One of the questions I had was how do I get to the impeller seal? For the newer models, such as Shryp's 77, the rear section of the gearbox housing twists off to reveal the impeller bearings and seal. For the 10ML, is was not the case. The exposed circular cap around the impeller shaft is the seal itself! What made it confusing is the seal is painted orange, making me think it is part of the gearbox housing. It is just a pressed in seal, not a screwed in plug like the newer gearboxes. To remove it, I drilled sheet-metal screw into it and pried it out. What is exposed are the bearings, which is held in by a circlip retainer clip.


-Ken

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post #2 of 29 Old 01-14-2014, 01:25 AM Thread Starter
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My next question is how can I tell if my impeller bearings are still good? There is slight play, but it seems smooth. Here is a video where I tried to capture the bearing play.





-Ken

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post #3 of 29 Old 01-14-2014, 07:42 AM
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It rare that you are going to have bad bearings, if everything is smooth and fairly tight I wouldn't tear them apart. If your gearbox goes bad I think it's going to be the gears that would go long before the bearings. The play on the impeller shaft in you video is likely because you have the auger shaft out. Once that is back in, that play prob will tighten up. If you are looking for the seals, they are on eBay, I think you can get them for about $3-4 each.

Ray
1962 Ariens 10ML60
1979 Toro 524
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post #4 of 29 Old 01-14-2014, 10:16 AM
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Hmm, that does seem fairly loose compared to mine, but mine had the plug that screws into the back to tighten them down. I don't think yours has any adjustment for it.
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post #5 of 29 Old 01-14-2014, 10:23 AM Thread Starter
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Ray, that's what I'm thinking too. The ring gear is out. Also, once the unit is reinstalled into the bucket, the opposite end of the impeller shaft would be supported by another bearing. That should eliminate any wobble in the shaft that could deform the new seal to be installed.

I'm pretty amazed at the the condition of all the internals, especially giving the age of the machine. That rear seal must had been the original since it is painted orange.

-Ken

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post #6 of 29 Old 01-14-2014, 10:29 AM
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Also, make sure you put some oil on the new seals before you put the shaft through and be sure to file down any burrs on any of the shafts. You don't want to damage your new seals.
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post #7 of 29 Old 01-14-2014, 10:30 AM Thread Starter
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I did managed to remove the impeller. I soaked the 2 roll pins overnight with WD-40. I then used a proper sized drill bit as a punch. With the roll pins removed, a few strikes with a rubber mallet was all it took to free up the fan from the shaft. I think my leaky rear seal helped me out.

-Ken

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post #8 of 29 Old 01-14-2014, 10:35 AM Thread Starter
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I have removed my old seals and was test fitting them over the shaft. What I noticed was about 1" from the end of the shaft, the tapered edge (where it steps up from threaded to smooth) is pretty sharp. How would I protect the new seals during installation? Should I file down the sharp edge?

-Ken

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post #9 of 29 Old 01-14-2014, 10:38 AM
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Quote:
Originally Posted by WestminsterFJR View Post
I have removed my old seals and was test fitting them over the shaft. What I noticed was about 1" from the end of the shaft, the tapered edge (where it steps up from threaded to smooth) is pretty sharp. How would I protect the new seals during installation? Should I file down the sharp edge?
File down any sharp spots with a file or angle grinder and then make sure you put some grease or oil on there before assembly. Does it look like it was made sharp or did that happen after years of wear?
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post #10 of 29 Old 01-14-2014, 10:45 AM Thread Starter
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Shryp, correct. Mine does not have any adjustments. Just a retainer clip is holding it in there. Prior to the tear down, with the unit still in the bucket, I did yank on the impeller shaft to check for play, and there was none to speak of.

-Ken

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