Pto winch slipping grinding under heavy load

[markww]

Hi, any ine who can point me into the right direction.

My pto winch is slipping with gear noise under heavy load only.

Checked the bronze gear in the winch and all splines on the drive shaft. All ok. Break pin replaced by 6mm bolt also still intact.

Any thing in the pto it self that can strip but still function normal under light load.

 

[kbushnz]

What gear oil are you using? If you use the wrong oil it will howl when under load. I used Elf SP680 gear oil made for worm gears.
http://www.onshoreoils.com.au/uploads/custom/REDUCTELF SP 100_ps.pdf

Also auto or manual?

If you re manual gearbox your clutch could be slipping?

 

[markww]

Was the pto output shaft key. Replaced shaft with local made splined shaft with mating flange and suzuki drive shaft . Automatic gearbox