ericm979
Super Member
- Joined
- Nov 25, 2016
- Messages
- 5,439
- Location
- Santa Cruz Mountains CA, Southern OR
- Tractor
- Branson 3725H Deere 5105
My Branson has it's front axle vent on the right steering knuckle. If you work or park on a slope to the right, it leaks oil out the vent. The dealer sent me a fix they had made up which is a ~2" extension. It helps but it's still not enough for me. Land is too sloped here. So I am thinking of making a better one.
My design would use a hydraulic live swivel connected to the old vent fitting on the axle, and clear vinyl hose running to the center of the tractor in front of the radiator where I will locate a small tank, probably made from PVC. The idea is that when pressure builds in the axle, it will force any oil in the tube up to the tank where air can bubble out past it. As the axle cools, it will pull back the oil in the tank and line. The line may dip down as it runs across the axle so there will be some oil that sits there. My main concern is that the ~2ft head to the tank. The pressure in the axle has to be great enough to push the oil up to the tank. My calculations using head of water (even though it weighs more) is that it'll be about .03 psi. There's also viscosity of the 80w-90 to consider but I don't know how to factor that in. The psi sounds low but I have no clue what it takes to push seals out.
I was thinking of using 1/4 hose to minimize the head pressure and make for easier routing but the viscosity may make it harder to push the oil through it.
Any suggestions? I know the tubing won't be sturdy, once I'm satisfied it works and no longer want to observe the oil I can replace it with something sturdier.
My design would use a hydraulic live swivel connected to the old vent fitting on the axle, and clear vinyl hose running to the center of the tractor in front of the radiator where I will locate a small tank, probably made from PVC. The idea is that when pressure builds in the axle, it will force any oil in the tube up to the tank where air can bubble out past it. As the axle cools, it will pull back the oil in the tank and line. The line may dip down as it runs across the axle so there will be some oil that sits there. My main concern is that the ~2ft head to the tank. The pressure in the axle has to be great enough to push the oil up to the tank. My calculations using head of water (even though it weighs more) is that it'll be about .03 psi. There's also viscosity of the 80w-90 to consider but I don't know how to factor that in. The psi sounds low but I have no clue what it takes to push seals out.
I was thinking of using 1/4 hose to minimize the head pressure and make for easier routing but the viscosity may make it harder to push the oil through it.
Any suggestions? I know the tubing won't be sturdy, once I'm satisfied it works and no longer want to observe the oil I can replace it with something sturdier.