Brother MFC-J6510DW Service Manual page 132

Switching lever guide
Apply a 3 mm diameter ball of grease (Permalub BAN-5) to the lubrication point below.
Leveller roller (LR) ASSY
Apply a 1 mm diameter ball of grease (FLOIL BG1319) to each of the lubrication points below.
Apply grease to
these 2 points.
Switching lever guide
Apply grease here.
3-7
(3_117)
Leveler roller (LR) ASSY
(3_120)
Confidential