Brother PT-H100 Service Manual page 41

2) Holder ASSY
Set the roller holder release spring to the boss on roller holder ASSY, and hang
the "A" of roller holder release spring on the groove of roller holder ASSY. And
insert the roller holder ASSY to the shaft of frame ASSY, and hang the "B" of
roller holder release spring on the notch part of frame ASSY, and then secure
them with the retaining ring E2.
3) DC motor
Set the DC motor ASSY to the frame ASSY, and secure it with the two screws.
NOTE: Make sure that the motor leads face as illustrated below.
Shaft
Groove
"B"
Notch part
Roller holder
release spring
Screws
Motor leads
Figure 3.1-17 Installing the Roller Holder Release Spring and Roller Holder ASSY
Roller holder ASSY
"A"
DC motor ASSY
III - 18
Retaining ring E2
Boss
Roller holder release spring
"A"
"B"
Shaft
Frame ASSY