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Re: another ...quandry?

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Author  [Modern View]

12-05-2012 05:14:51

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You don't say which Pump you are using, Is it the internal tractor Pump or an external Pump.
If it is an external Pump there will usually be a Filter and it may need cleaning so it can suck the oil through. Obviously if the Transmission is milky then it needs changing but it should work. If the tractor has been standing some time and you are using the internal tractor Pump then then Non-return valves in the side chambers maybe stuck or rusted so they wont operate freely or the springs on these valves may be broken due to corrosion. Water in the oil causing it to be milky is often the cause of these problems. The Safety Valve maybe partly open although it rarely happens as when it is discharged anything in the Valve is usually flushed out, but if it cannot develop pressure then this will not happen. The leak on an internal Pump could be anywhere and you need to remove the LEFT round cover, the one with the PTO Lever, and look inside when it is supposed to be lifting (lever at top)and look for the oil squirting, you can see more from the left side. If the Pump is cavitating as suggested, then the oil will be white or very light due to air mixed in, but it will also be white if there is water in the oil and it makes an emulsion and we know that this happens frequently when water is allowed to enter the system through the bottom of the Gear Lever and the Draft Spring seal at the back of the seat....John(UK)

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