Brother mfc8440 Service Manual page 163

(13) Remove the four cup S M3x6 Taptite screws, and then remove the main motor ASSY.
(14) Remove the develop joint and joint spring from the drive unit.
(15) Release the two hooks from the develop joint, and remove the joint stopper.
(16) Remove the gear 25/130 and fuser drive gear from the drive unit.
Gear 25/130
Fuser drive gear
Drive unit
(17) Remove the gear 40/54Y, gear 17 planetary, gear 45 arm F/R and gear 20 center F/R
from the main frame L.
Gear 40/54Y
Joint spring
Fig. 4-144
Gear 20
Gear 45
Gear 17
center F/R
arm F/R
planetary
Fig. 4-145
4-81
MFC-8440/8840D/8840DN, DCP-8040/8045D/8045DN
Develop joint
Joint stopper
SERVICE MANUAL
Taptite, cup S M3x6
Main motor ASSY
Taptite, cup S M3x6