Mr. Mower
Well-Known Member
- Joined
- Sep 1, 2016
- Threads
- 7
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- 253
As we all know, when the mower is in use and the fluids get hot, the hydraulic fluid expands.
Because the excess amount of hydraulic fluid has to go somewhere.
Thus, the reason for the "reserve expansion tank" is necessary.
When the hydraulic fluid expands due to excessive heating the reserve expansion tank will show fluid build up beyond the Full Cold Line. Though when the mower has been sitting and has cooled down then the excess amount of fluid that has built up in the reserve expansion tank will eventually, yes, drain back into it's system that it needs to settle back into. Leaving the reserve expansion tank with fluid only either at the Full Cold Line or just right below the line. But again, never above it.
But as the picture provided by the original poster shows, the fluid build up was almost towards the top of the reserve expansion tank and as the original poster explains, when the mower was delivered the reserve expansion tank was almost top full with fluid and of course was concerned. Rightly so. It was already like that.
If so then, the excess amount of hydraulic fluid had already drained back into it's system and well of course that excess amount of hydraulic fluid had to of come from somewhere?
Someone obviously added more fluid (or some type of oil) to that mowers reserve expansion tank. Probably without even referring to the manual about it. Maybe really "not thinking" and just seeing that reserve tank and decided that it was "low on fluid" and then taking it upon themselves to just "add more fluid" to the small tank, to the point of almost topping if off? Big question specifically about this is, exactly "what type of fluid" was actually used to fill that reserve expansion tank?
One of two things, if the reserve expansion tank was to continuously show that excessive amount of hydraulic fluid build up, almost to the top then 1.) the hydraulic system needs to be looked into, possible problems?....or.....2.) someone just added more fluid to the reserve tank, trying to top it off, again unknowingly perhaps?
Speaking for myself here, I know for a fact that on my mower, once done using it and all and gets parked, that reserve expansion tank does show just a bit above Full Cold Line, with excess fluid but "never" way above towards the top. After about an hour or more the excess fluid settles back in and the reserve expansion tank will show the excessive amount of fluid at the Full Cold Line or just right below it.
Because the excess amount of hydraulic fluid has to go somewhere.
Thus, the reason for the "reserve expansion tank" is necessary.
When the hydraulic fluid expands due to excessive heating the reserve expansion tank will show fluid build up beyond the Full Cold Line. Though when the mower has been sitting and has cooled down then the excess amount of fluid that has built up in the reserve expansion tank will eventually, yes, drain back into it's system that it needs to settle back into. Leaving the reserve expansion tank with fluid only either at the Full Cold Line or just right below the line. But again, never above it.
But as the picture provided by the original poster shows, the fluid build up was almost towards the top of the reserve expansion tank and as the original poster explains, when the mower was delivered the reserve expansion tank was almost top full with fluid and of course was concerned. Rightly so. It was already like that.
If so then, the excess amount of hydraulic fluid had already drained back into it's system and well of course that excess amount of hydraulic fluid had to of come from somewhere?
Someone obviously added more fluid (or some type of oil) to that mowers reserve expansion tank. Probably without even referring to the manual about it. Maybe really "not thinking" and just seeing that reserve tank and decided that it was "low on fluid" and then taking it upon themselves to just "add more fluid" to the small tank, to the point of almost topping if off? Big question specifically about this is, exactly "what type of fluid" was actually used to fill that reserve expansion tank?
One of two things, if the reserve expansion tank was to continuously show that excessive amount of hydraulic fluid build up, almost to the top then 1.) the hydraulic system needs to be looked into, possible problems?....or.....2.) someone just added more fluid to the reserve tank, trying to top it off, again unknowingly perhaps?
Speaking for myself here, I know for a fact that on my mower, once done using it and all and gets parked, that reserve expansion tank does show just a bit above Full Cold Line, with excess fluid but "never" way above towards the top. After about an hour or more the excess fluid settles back in and the reserve expansion tank will show the excessive amount of fluid at the Full Cold Line or just right below it.
