Brother P-touch PT-1180 Service Manual page 38

Assembling the components of the motor holder ASSY
Installing the thermal head ASSY and the roller holder ASSY
(1) Install the thermal head to the frame ASSY, and tighten the screw.
Tightening torque: 0.59 N . m (6 kg . cm)
(2) Set the release spring onto the frame ASSY so that its straight end "a" is fitted to the section
"A" on the roller holder ASSY, then install them to the frame so that the spring bent end "b"
becomes hooked on the section "B". And then set the retaining ring securely.
Thermal head ASSY
Fig. 2.2-24 Installing the Thermal Head ASSY
"A"
Fig. 2.2-25 Installing the Roller Holder ASSY
II-
Screw
Roller holder ASSY
"a"
23
Frame ASSY
Fit for boss
Retaining ring
"b"
Release spring
"B"
Frame ASSY