Oil filled transmissions should have a vent. All automotive, commercial, and industrial drive lines are vented.
Since oiled transmissions requires some airspace to alow for expansion, you need one.
If you heat the oil too much, and the resulting air pressure has no where to go it will blow out one of your seals.
If you decide to vent it, follow a trick from the full size off roaders, and run a hose as high as you can on the tractor and leave the opening facing down.
Doug Site Owner
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Oil filled transmissions should have a vent. All automotive, commercial, and industrial drive lines are vented.
Since oiled transmissions requires some airspace to alow for expansion, you need one.
If you heat the oil too much, and the resulting air pressure has no where to go it will blow out one of your seals.
If you decide to vent it, follow a trick from the full size off roaders, and run a hose as high as you can on the tractor and leave the opening facing down.
Should I incorporate a vent into my Peerless then, especially since I have a 2:1 ratio?
If you're going to use oil it will need a vent. I'd recommend replacing the old bentonite grease with 00 grease instead of oil. 00 will not leak and seep out like gear oil does (it's nearly impossible to keep oil in a transaxle that was built to use grease).
Chopperhed Moderator
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Oil filled transmissions should have a vent. All automotive, commercial, and industrial drive lines are vented.
Since oiled transmissions requires some airspace to alow for expansion, you need one.
If you heat the oil too much, and the resulting air pressure has no where to go it will blow out one of your seals.
If you decide to vent it, follow a trick from the full size off roaders, and run a hose as high as you can on the tractor and leave the opening facing down.
Should I incorporate a vent into my Peerless then, especially since I have a 2:1 ratio?
It would be a good idea.
As a side note. I do know of one transmission that is not vented.
Marine outboards, and I/Os have sealed gearboxes, but they are designed to hold pressure. The seals are designed to handle pressure from both sides.
Chopperhed Moderator
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so does the 00 grease not whip of the gears like regular grease or what? that whining noise pisses me off so i am constantly adding grease
i have a 4 1/2 front pulley and 3 1/2 rear
There are some very exoensive synthetic greases that are very sticky, I used some in a 4x4 diff with a broken pinion tooth, and it shut the whine up a bit. Problem is, its very pricey, and usuallly only available in 5 gallon buckets or 45 gallon drums. You can get it in a 16 oz tube but the extra fillers added change the characteristics.
Doug Site Owner
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Age : 29 Join date : 2012-12-24 Points : 7782 Posts : 3047 Location : Lebanon County, PA
Oil filled transmissions should have a vent. All automotive, commercial, and industrial drive lines are vented.
Since oiled transmissions requires some airspace to alow for expansion, you need one.
If you heat the oil too much, and the resulting air pressure has no where to go it will blow out one of your seals.
If you decide to vent it, follow a trick from the full size off roaders, and run a hose as high as you can on the tractor and leave the opening facing down.
Should I incorporate a vent into my Peerless then, especially since I have a 2:1 ratio?
It would be a good idea.
As a side note. I do know of one transmission that is not vented.
Marine outboards, and I/Os have sealed gearboxes, but they are designed to hold pressure. The seals are designed to handle pressure from both sides.
Now the joys of trying to figure out how to do it. Would have been easier to drill and tap a hole when it was apart.
if i get any kind of synthetic grease would it stick better than some multi purpose cheapo stuff?
also does the grease in there turn into oil because of the heat and friction or what? it seems like if i keep adding grease there would be so much in there that there would be no room for the grease to fly off ya know?
thanks for the help
Doug Site Owner
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if i get any kind of synthetic grease would it stick better than some multi purpose cheapo stuff?
also does the grease in there turn into oil because of the heat and friction or what? it seems like if i keep adding grease there would be so much in there that there would be no room for the grease to fly off ya know?
thanks for the help
Synthetic may be stickier, the stuff I was using was designed to stick under high pressure, while being exposed to hydrogen sulfide. I was using Lubchem Valve grease.
Yes grease will get thin under pressure and heat. when you are too full it will find a way out somewhere.
Oil filled units are usually built o be a miximum of 60% or so full, to allow room for expansion.
Chopperhed Moderator
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Most my mod transmissions whine, basically because they were designed for 5mph instead of 20 plus mph - way they were cut at the factory .
I ran half a case full of nothing but plain lucas oil engine oil additive in the trans on my mod murray, it whined terrible still, but it held together with no issues.
In both my stock and one mod MTD, i drilled and tapped a zerk fitting in the bottom of the transaxles, to slap some fresh lucas oil grease into them every so often.
As long as the zerk doesnt interfere with any internal parts, they can be put pretty much anywhere accessable.
Chopperhed Moderator
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I've converted all my peerless transaxles to gear oil. Installed a breather, drain plug, cut brake shaft off and ran capped bearing, installed grease zerks on the axle. Here's a video, covers some of it. It doesn't leak any now, but you have seal and grease the axle correctly. When it did leak, it wasn't much.
i do have 2 grease zerks on my transaxle which does make adding grease way easier. Ill probably get a new transaxle this spring 600 series or 820 if i can find one. my dana transaxle just sucks all the bushings are gone and it is not very reliable. Bushings cost so much to i might just say screw it and romp it till it breaks.
or should i replace the bushings and convert it to oil filled?
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Murray modder Member
Join date : 2012-11-23 Points : 4801 Posts : 356 Location : Somewher in Va
If your trying to take the whine away, I use automation transmission fluid I found in the back of my shop! mine doesnt wine all to much, but it seems good.
craftworks125 New Member
Age : 28 Join date : 2012-04-24 Points : 4625 Posts : 24 Location : michigan
i do have 2 grease zerks on my transaxle which does make adding grease way easier. Ill probably get a new transaxle this spring 600 series or 820 if i can find one. my dana transaxle just sucks all the bushings are gone and it is not very reliable. Bushings cost so much to i might just say screw it and romp it till it breaks.
or should i replace the bushings and convert it to oil filled?
I HATE SPENDING MONEY
Cheap ass
Tuffy55 Member
Join date : 2013-01-07 Points : 4369 Posts : 31 Location : MI