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How often should the gearbox grease be replaced?
Husqvarna 924HV
Model number 961930070 00
DOM: 091911 (2011)

Since I have a 10 y/o snow blower when is it necessary? Owners manual implies only if gearbox has been repaired. The only reason I can think of to repair a gearbox is impact with something and shear pins fail or grease failure.

Make sure gearbox stays full of grease, otherwise moisture will creep in open spaces inside gearbox.

mechanic mark said:

Make sure gearbox stays full of grease, otherwise moisture will creep in open spaces inside gearbox.

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Unless it has a grease zerk, you don’t want to open it up and spilt the two halves, contend with a gasket, etc. Most snowblowers are low hour machines with not much use. Crack it open and take a look if your curiosity is getting to you.

Tiger Small Engine said:

Unless it has a grease zerk, you don’t want to open it up and spilt the two halves, contend with a gasket, etc. Most snowblowers are low hour machines with not much use. Crack it open and take a look if your curiosity is getting to you.

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From the manufacturer's manual:
AUGER GEAR CASE•The gear case was filled with lubricant to the proper level at the factory. The only time the lubricant needs attention is if service has been performed on the gearcase.•If lubricant is required, use only Ronex ED #1


My thought was to open the fill port and pump grease into the gear box until it overflows. Put the cover back on and repeat again. My concern is the left, right, and rear seat may fail over time and result in shaft damage.

Yes , I have to much time on my hands

Don’t pump any grease into the gearbox unless you are positive it contains grease. Depending on the manufacturer it could have grease, 80W-90 oil, 30W, etc. Pumping grease into a case which uses oil will lead to problems.

Rivets said:

Don’t pump any grease into the gearbox unless you are positive it contains grease. Depending on the manufacturer it could have grease, 80W-90 oil, 30W, etc. Pumping grease into a case which uses oil will lead to problems.

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Rivets, I checked. The manufacturer filled the gearbox with grease (Ronex ED #1) during manufacturing.

You don’t tell us the manufacturer, so how are we to know exactly what type of lube you need. If you look up the specs for Ronex ED #1, you will see that this is way over kill for a snowblower gearbox. Second, you stated;
From the manufacturer's manual:
AUGER GEAR CASE•The gear case was filled with lubricant to the proper level at the factory. The only time the lubricant needs attention is if service has been performed on the gearcase.
If you are not going to open the gearbox, why throw out the manufactures recommendation?

Tiger Small Engine said:

Unless it has a grease zerk, you don’t want to open it up and spilt the two halves, contend with a gasket, etc. Most snowblowers are low hour machines with not much use. Crack it open and take a look if your curiosity is getting to you.

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My 30 year old Ariens leaked the oil out of the gear box as the seal has failed. What I did was take a plastic bolt drill a hole thru the bolt, tap the hole for a zerk, then when I am getting the blower ready for winter I remove the fill plug put the homemade zerk into the fill port and pump cold temperature grease into the gear case. Then replace the zerk with the fill plug. The grease is thick enough that it does not run out past what is left of the seal and does not firm up to jam the gears. I would not do this on a newer blower, but for this old blower, it is "good enough". And this has worked for the last four winters.
The blowers first ten years were lived in the U.P.'s snow belt and now live in the SE part of the U.P. where the winters have much less snow, roughly 90 inches.

McB said:

How often should the gearbox grease be replaced?
Since I have a 10 y/o snow blower when is it necessary? Owners manual implies only if gearbox has been repaired. The only reason I can think of to repair a gearbox is impact with something and shear pins fail or grease failure.View attachment 67292

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If it is working don't fix it! If you have an opening fill it with grease or 90 weight oil or both.

Gear boxes have lubrication systems based on the type of lubricant used
So things like heavy grease to replace oil can starve bushes that rely on small oil holes or scrolls for lubricant supply
Similarly oils will drain completely out of the bearings & bushes between use so when first started many will be almost dry .

Rivets said:

You don’t tell us the manufacturer, so how are we to know exactly what type of lube you need. If you look up the specs for Ronex ED #1, you will see that this is way over kill for a snowblower gearbox. Second, you stated;
From the manufacturer's manual:
AUGER GEAR CASE•The gear case was filled with lubricant to the proper level at the factory. The only time the lubricant needs attention is if service has been performed on the gearcase.
If you are not going to open the gearbox, why throw out the manufactures recommendation?

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I updated my post. It's a Husqvarna 924HV
MODEL 961930070 00. DOM 091911(2011)

Thanks for pointing that out.

I contacted Husqvarna to ask where to get Ronex ED 1. They are looking that up for me

Mixing different type greases can cause an oily situation, as they can be non-compatible.

sounds like keep an eye on it after every use. regular maintenance and in your case, a watchful eye. simple as probably a 3/8 square bolt to remove and inspect/fill. less than 5 minutes after 1st time.

jviews12 said:

sounds like keep an eye on it after every use. regular maintenance and in your case, a watchful eye. simple as probably a 3/8 square bolt to remove and inspect/fill. less than 5 minutes after 1st time.

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In my case it's two plastic plugs.

See youtube videos above.