Brother DCP-L8400CDN Service Manual page 359

(7) Remove the Retaining ring E3 from the Feed roller and remove the Feed roller bushing TR.
(8) Remove the Lift spring from the Hook of the Lift lever A.
(9) Remove the Feed roller from the Main body in the directions of the arrows 9a, 9b, and 9c
in this order.
Lift lever A
Feed roller
Fig. 3-287
Feed roller
9c
9b
Fig. 3-288
3-195
Feed roller bushing TR
Retaining ring E3
<Right side>
Main body
9a
Lift spring
Lift lever A
8
<Front side>
Hook
Confidential