Load test Char-Lynn/Eaton hydraulic motors? 101-1005-009

[LodiCal]

I have a couple of hydraulic motors; Char-Lynn/Eaton 101-1005-009. I am restoring an old lift that uses them as drive motors. Is there a way to load test them so I can see if they’re good or not? I can turn one of the motors by hand with the sprocket on fairly easily and the other one has more resistance.
Link to photos of the motors: Char-Lynn Eaton Hydraulic Motors

 

[the old grind]

First-off I'd fill with oil and cap both ports, anchor it well to see if it turns or leaks under some muscle, and go from there.

 

[LodiCal]

Thank you for the reply old grind! I was thinking some sort of fancy machine to bench test it, but I will try your recommendation first!

 

[wdchyd]

Fancy test machines are avail but unlikely to be cost effective for testing small low speed high torque motors individually. Testing on the lift with flow meter at the exhaust/return port and inducing a torque load should show adequate results (this assuming main pump is good and efficiency known)
Our test machine at work machine will load test hyd motors dynamically but a min rpm must be met to register torque values.

 

[wdchyd]

BTW, turning the shaft by hand easily usually indicates a worn geroler section, not good