FLAcharlie
Member
I have a 10 year old Woods Brush Hog, didn't come with the manual.
I've changed the oil once. What's recommended ?
I've changed the oil once. What's recommended ?
(quoted from post at 16:51:41 01/09/15) I have a 10 year old Woods Brush Hog, didn't come with the manual.
I've changed the oil once. What's recommended ?
(quoted from post at 21:52:54 01/09/15) I use the JD corn head grease in my 'N steering column, good stuff. I will consider that in the brush hog, thanks.
(quoted from post at 12:07:11 01/10/15) is there a generic corn head oil
(quoted from post at 07:03:27 01/10/15) I was surprised to find that Caryc, below, is correct.
"Nowhere in the manual does it mention anything about changing the oil."
I have 3 Woods rotary cutters, BB720X, BB840X and MDS1260.
I bought all three new and have the owners manuals. The manuals do not include gearbox oil change among service items.
That said, the oil becoms water contaminated rather quickly due to condensation and I do change the oil in all every 3 years or so.
I change from the top when the oil is hot using a marine "topside oil changer" that I bought years ago when I had a boat with an I/O drive.
I probably get about 90% of the oil out and it does not take long.
Dean
(quoted from post at 14:37:04 01/10/15) All three of mine, all others that I have previously owned, and all that I have seen are vented, intentionally or otherwise. This allows air to exchange with changing temperature.
The oil becomes milky within a year or so but I usually let it go for three or four years before changing it.
Dean
(quoted from post at 14:49:24 01/10/15) If it was truly sealed I'd expect an input or output shaft seal to
blow out when warmed due to thermal expansion.
Sure you don't have a vented plug, they have lil caps on them.
(quoted from post at 16:14:27 01/10/15) Best way I can describe it, without telling you to go to
engineering school ( like I did ) is to illustrate it by teaching.
Take your grease gun and find a tail wheel on an implement
with a sealed hub. Now start pumping.. but go slow.
Let me know what slow build up of pressure eventually
accomplished.
Now, that said, what you are looking at in a sealed sump, with
thermal expansion, and seals, is the retention friction of the
seals vs the lip seal integrity, vs the air pressure.
Strongest one wins.
If the air pressure is high, and the seals are tight fit of or have
retainers, then the lip will give, or perhaps a box lid gasket if it
has one.
If no retainer and good lip, the seal will push out.. etc
If good retention, and average lip, you will shed lube.
They might have engineered it as sealed sump with tight seal
retention and all, and that might be fine on book specs with new
SLS. However with worn seals, I see lube loss.
My personal opinion, without seeing the parts list and diagram
for your mower.
I HAVE seen sealed gear boxes on cone spreaders that were
"permanently" lubed with grease. Same with some mowers too.
Most of those fail due to lack of lube however...
(quoted from post at 16:57:13 01/10/15) I wonder if a prev owner might have swapped a vented plug in the box with a standard one.
All my mower boxes have vented plugs, john deer, king latter, heavy duty and light duty hose and a ford mower. Come to think of it my serves mower has one too. I just realized I have 7 mowers not 5, also have an IH and a woods.
(quoted from post at 23:31:37 01/10/15)(quoted from post at 16:57:13 01/10/15) I wonder if a prev owner might have swapped a vented plug in the box with a standard one.
All my mower boxes have vented plugs, john deer, king latter, heavy duty and light duty hose and a ford mower. Come to think of it my serves mower has one too. I just realized I have 7 mowers not 5, also have an IH and a woods.
What exactly is a vented plug? Does is just have a small hole drilled through it from top to bottom?
(quoted from post at 12:40:08 01/11/15) "Pipe cleaner!"
How many of you know what a pipe cleaner is?
My Father smoked a pipe all of his adult life.
Where would one find pipe cleaners today?
Regarding tail wheels with sealed bearings: I too have never seen a tail wheel with sealed bearings but it would not surprise me if such exist, as the manufacturing costs would likely be lower. I would not buy one, however, as I am OLD school and like to over-lube my equipment, pushing out dirt and old grease in the process.
Dean
(quoted from post at 12:29:53 01/11/15) Sorry for the delay in responding.
My 3 Woods mowers are late models. The vent is built into the top filler plug/dipstick. Sorry, no pictures.
Other mowers that I have owned have had other types of "vents," e.g., interference fit filler plugs, fill plugs with small holes drilled through, and even gear housings with small holes drilled through.
There is no such thing as a hermetically sealed AG gearbox.
Dean
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