Electric Jack Hammer storage

[fartymarty]

I have an older HF Chicago Electric Jack Hammer (but I guess any info obtained would apply to even the more expensive models?) that I want to make a cart for out of a hand truck. I'm thinking that when it is being used for a project that setting it in the stand vertically makes sense, but that for long term storage it would make more sense to store it upside down on the same cart to keep the weight nice and low.
So, for those that are familiar with the internal workings of electric jack hammers is there any reason that they shouldn't be stored upside down? Some extra load on a grease seal or something else that I'm not aware of? I've searched the net and all I can find are upright carts, but I'm assuming that is for ease of use and not because it's the only way they can be stored. Am I wrong?

 

[rlitman]

Better hammers use an oiled hammer case, rather than greased. Upside down, I think oil can run to to the motor (that's bad).

Anyway, the balance is such that the weight won't be lower stored upside down. The densest parts are at the bottom which is all steel. The motor body is either plastic or aluminum.

If you look at the Bosch Brute hand truck, you could just weld a piece of pipe to the plate of a hand truck and use a bungee at the top.

 

[fartymarty]

Better hammers use an oiled hammer case, rather than greased. Upside down, I think oil can run to to the motor (that's bad).

Perhaps you missed the part where I said I have a HF hammer?

..as far as I know it just takes grease unless there is a sealed oil section I'm unaware of. I'm going to double check what you said about the weight balance, off the top of my head that's not how I recall it but I haven't moved it in awhile so if you are correct that will make my query moot.
Regardless, thanks for the response rlitman!