Brother HL-3040CN Service Manual page 271

(9) Remove the three Taptite bind B M4x12 screws and two Taptite cup S M3x6 SR screws,
and then remove the Drum develop drive unit from the Side frame L.
Taptite cup S M3x6 SR
Taptite bind B M4x12
Harness routing: Refer to
(10) Remove the Pendulum gear bush from the Drum develop drive unit.
Drum develop drive unit
Fig. 5-113
" Paper Feed Motor ASSY, Drum Drive Motor."
Fig. 5-114
5-97
Taptite bind B M4x12
Drum develop drive unit
Pendulum gear bush
Side frame L
Pendulum gear bush
Confidential