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recently purchased a 750B John Deere dozer runs perfect and pushes hard as far as performance goes there’s no issues at all. However the hydrostatic drive is extremely loud any idea how to fix this??
There is not enough information here to assist in a diagnosis.
What type of noise?
Does it make this noises in all speeds and directions?
Have you checked your oil levels?
Does it look like there may be air mixed with the oil in the drive oil reservoir?
I just fired her up and with the safety lever down I can hear a hum coming from resivor tank behind the seat I’ll try getting a video but it is loud basically all the time but worse at faster speeds and as the load gets heavier it’s louder and sight glasses are full of fluid
A "hum" could be numerous things. Did you place the machine in gear when you put the safety lever down or was it still in neutral? Does this noise go away when you lift up on the safety lever?