Brother MFC640CW - Removing the Maintenance Unit and Related Parts

5-55 Confidential
Removing the maintenance unit and related parts
(2) Remove two screws, "e" from the top of the engine unit and "f" from the right side of the
maintenance unit.
(3) Remove the maintenance unit.
(4) Unlatch the purge cam switch from the maintenance unit.
(5) Remove the purge-related parts from the engine unit as shown below.
NOTE: Take care not to let the springs bounce off.
Engine unit
Purge lever
Top of the maintenance unit
Clutch gear spring (shorter)
Clutch gear
Purge lever shaft
Purge lever
Purge lever spring (longer)
"f"
"e"
Purge cam switch
Maintenance
unit
Purge gear
Idle gears S
Idle gear L
Latch
PF roller gear R
Ribs
"e": Taptite, cup B M3x8
"f": Taptite, cup S M3x6
Reassembling Note: When setting the idle gear L back into place, face its ribs inwards.
Reassembling Note: If you replace the engine unit, make adjustments specified in Chapter 6,
Section 6.2.