Brother PT-2420PC, Service Manual

Page: 32 / 63

III-15
[ 4 ] Assembling the Cutter ASSY and DC Motor ASSY
(1) Apply half of a rice-grain size of the grease onto the slideway and gear on the cutter rack
gear.
Grease: Shinetsu Silicon silicon grease G501
(2) Insert the cutter drive gear ASSY onto the shaft on the chassis sub ASSY and turn it in the
direction of the arrow to assemble it. (Refer to the figure indicating the assembled position
of the cutter drive gear ASSY and cutter rack gear ASSY.) Then, fix the cutter drive gear
ASSY with the retaining ring.
(3) Insert the end “A” of the cutter return spring into the hole on the chassis sub ASSY and
assemble the other end into the cutter lever. Assemble the cutter lever onto the shaft on the
chassis sub ASSY and fix it with the retaining ring.
Note: When assembling the cutter lever, ensure to fix the boss “B” of the cutter lever into the
frame “C” on the cutter rack gear.
(4) Insert the pin of the cutter drive gear ASSY into the oblong hole on the cutter ASSY and
install the cutter ASSY into the positioning bosses on the chassis sub ASSY to secure it with
the one screw.
Warning: When assembling the cutter ASSY, take care not to get injured in your fingers with
the cutter blade.
(5) Apply half of a rice-grain size of the grease onto the pin of the cutter drive gear ASSY.
Grease: Shinetsu Silicon silicon grease G501
(6) Move the cutter lever to check that the cutter ASSY works correctly.
Fig. 3.1-22 Assembling the Cutter ASSY and Cutter Lever (1)
Cutter lever
Oblong hole
Chassis sub ASSY
Retaining ring
Cutter return spring
“A”
“B”
Screw
Cutter ASSY
Positioning bosses
Cutter drive gear ASSY
Grease application point
Retaining ring
Applying the grease
onto the gear.
Grease application point
“C”
Cutter rack gear