Brother MFC-J3520 Service Manual page 129

CR frame (Rear surface)

Apply grease (FLOIL BG1319) at the size of 1 mm diameter to 2 locations in total shown in the
figure below.
CR frame
Apply grease here.
15±1
64±1
(mm)
CR guide rail
: grease (1.0 mm dia. ball)
3-9
Confidential