CASE 1840 weak right side

[DRTURBO69]

Hello right side slower than left anything I can chen before wheel motor pulled.Linkage looks calibrated.Left motor has been out I think-painted black.Pump was out when I got machine had overhauled-pump mech. said stuck servos? internals looked new-sat for 5 years.Could this be in pump? Thanks Doc

 

[Tazza]

It could be the pump, or even leaking seals in the drive motor. Can you swap the drive motors easily? if so, swap them and see the the problem moves. If it does, its your motor, if not its the pump.
Are there any adjustments in the linkages? I'm wondering if the swash plate isn't traveling the same distance on both pumps. If they don't travel far enough, you won't get full flow from the pump to the motor. Just a thought at least.