Rationale for Shared Hydraulic/Transmission Oil?

[airbiscuit]

I get the logic of using that large transmission housing to also be a reservoir for hydraulic oil - it's already there, saves space, acts as a heat sink, etc. What I've wondered about though is the purity of the transmission oil. We are all fanatical about the cleanliness of hydraulic oil. I seem to remember that the oil in car transmissions contained metal shavings from the gears and syncros gnashing. Apparently we just trust the hydraulic filter to take care of any metal shavings? It must not be a big deal, because it is a common design feature. Thoughts?

 

[k0ua]

Re: Rationale for Shared Hyrraulic/Transmission Oil?

I get the logic of using that large transmission housing to also be a reservoir for hydraulic oil - it's already there, saves space, acts as a heat sink, etc. What I've wondered about though is the purity of the transmission oil. We are all fanatical about the cleanliness of hydraulic oil.

I seem to remember that the oil in car transmissions contained metal shavings from the gears and syncros gnashing. Apparently we just trust the hydraulic filter to take care of any metal shavings? It must not be a big deal, because it is a common design feature.

Thoughts?

Well, I think you have outlined it pretty well, but remember that hydro-stat equipped machines have that extra micro-fine expensive filter before the fluid reaches the close tolerance hydro parts. (slippers and swash plate and pistons). the machine relies on those filters to keep clean.

 

[Industrial Toys]

Re: Rationale for Shared Hyrraulic/Transmission Oil?

I have become somewhat obsessed with sharing oil amoung machines or buying an attachment and getting the old oil out of it.

 

[Texasmark]

If it makes sleeping hard, and I have had that problem for items of the sort in the past, get some magnets...HF sells them, and attach them to the bottom of your engine and TDH sump; the more the merrier. I use them on my red tractors TDH sumps. Problem solved.