Oki ES3640MFP Component Replacement Manual page 38

MPT Feed Rollers
1.
Partially open MPT Tray.
2. Rotate the 2 levers 90 degrees to unlock the Feed Roller Assembly linkage from MPT Tray Links.
3.
Raise the Feed Roller assembly to access the Pick-up and Feed Rollers.
4. Open the Retard Roller Access Door.
5.
Remove the Pick-up Roller by gently prying the left end away from the housing.