Noise, but Disappeared When braked- John Deere L111

[stonemind]

Hi, I recently tried to mow my lawn to kill the boredom of lockdown, but the noise from the mower has kept me restless. After replacing 2 idler pulleys, the noise stays unchanged. But the noise disappeared the moment I stepped on the brakes. I youtubed , but was unable to find a solution.
Now I am no longer bored and may stay restless until I find a solution to kill the noise---so that I can go back to appreciate anew my boredom in peace.

Any suggestion to restore my boredom, i. e., to eliminate that noise, will be greatly appreciated. Thx.......

 

[StarTech]

Did you replaced the drive belt? If so the only left is the hydrostatic transmission input bearing or other problem internally.

 

[bertsmobile1]

Noise ?
Screach
Scream
rattle
tap
slap
whirr
Whistle Yankee Doodle ?

 

[stonemind]

Star Tech,

I did. So it must be caused by the overused hydrostatic transmission input bearing. I am youtubing to find out where it is located and what it looks like.

Will get back to you after my findings. Many thanks,...